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TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Description
Due to smaller size (fit the standard dimensions of 2.5" SATA Hard Disk Drives), huge capacity, high speed, and low power consumption, Solid State Disk is perfect replacement storage device for PCs, Laptops, gaming systems, and handheld devices. * *
2.5" Solid State Disk
Features
* * RoHS compliant Fully compatible with devices and OS that support the SATA 3Gb/s standard Non-volatile Flash Memory for outstanding data retention Built-in ECC (Error Correction Code) functionality and wear-leveling algorithm ensures highly reliable of data transfer Shock resistance
Placement
B
C
*
Dimensions
Side
A B C
Millimeters
100.30 0.40 69.85 0.20 9.50 0.15
Inches
3.949 0.016 2.750 0.008 0.374 0.004
A
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1 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Specifications
Physical Specification
Form Factor Storage Capacities Length Dimensions (mm) Width Height Input Voltage Weight Connector 2.5-inch HDD 8 GB to 192 GB 100.0 0 0.40 69.85 0.20 9.50 0.15 5V 5% 66g 5g SATA 7+15 pins combo connector
2.5" Solid State Disk
Environmental Specifications
Operating Temperature Storage Temperature 0 to 70 - 40 to 85
Power Requirements
Input Voltage Mode Power Consumption (8/16/32/64GB) Write(peak) Read(peak) Idle(peak) Power Consumption (128GB) Write(peak) Read(peak) Idle(peak) Power Consumption (192GB) Write(peak) Read(peak) Idle(peak) 5V 5% @25 Max. (mA) 476.1 426.2 144.0 541.6 461.2 142.1 573.3 483.1 146.2 Max. (W) 2.4 2.1 0.7 2.7 2.3 0.7 2.9 2.4 0.7
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2 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Performance
Model P/N TS8GSSD25S-S TS16GSSD25S-M TS16GSSD25S-S TS32GSSD25S-M TS32GSSD25S-S TS64GSSD25S-M TS64GSSD25S-S TS128GSSD25S-M TS192GSSD25S-M Sequential Read(Max.) 150 MB/s 150 MB/s 150 MB/s 150 MB/s 150 MB/s 150 MB/s 170 MB/s 150 MB/s 150 MB/s
2.5" Solid State Disk
Sequential Write(Max.) 90 MB/s 50 MB/s 100 MB/s 90 MB/s 120 MB/s 90 MB/s 140 MB/s 90 MB/s 90 MB/s
Actual Capacity
Model P/N TS8GSSD25S-S TS16GSSD25S-M TS16GSSD25S-S TS32GSSD25S-M TS32GSSD25S-S TS64GSSD25S-M TS64GSSD25S-S TS128GSSD25S-M TS192GSSD25S-M User Max. LBA 15,621,984 31,277,056 31,277,056 62,586,880 62,586,880 125,206,528 125,206,528 250,445,824 375,685,120 Cylinder 15,498 16,383 16,383 16,383 16,383 16,383 16,383 16,383 16,383 Head 16 16 16 16 16 16 16 16 16 Sector 63 63 63 63 63 63 63 63 63
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3 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Reliability
Data Reliability Data Retention MTBF
2.5" Solid State Disk
Supports BCH ECC 8 bits or 15 bits in 512 bytes 10 years 1,000,000 hours
Vibration
Operating 3.0G, 5 - 800Hz 3.0G, 5 - 800Hz Non-Operating * Note: Reference to the IEC 60068-2-6 Testing procedures; Operating-Sine wave, 5-800Hz/1 oct., 1.5mm, 3g, 0.5 hr./axis, total 1.5 hrs.
Shock
Operating 1500G, 0.5ms 1500G, 0.5ms Non-Operating * Note: Reference to the IEC 60068-2-27 Testing procedures; Operating-Half-sine wave, 1500g, 0.5ms, 3 times/dir., total 18 times.
Regulations
Compliance CE, FCC and BSMI
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4 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Package Dimensions
2.5" Solid State Disk
Below figure illustrates the Transcend 2.5" SATA Solid State Disk. All dimensions are in mm.
*Note: Tighten mounting screws with no more than 1.0Kg-cm (0.07ft-lbs) of torque.
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5 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Pin Assignments
Pin No. 01 03 05 07 09 11 13 15 17 19 21 Pin Name GND ABGND NC GND GND 5V GND GND NC Pin No. 02 04 06 08 10 12 14 16 18 20 22
2.5" Solid State Disk
Pin Name A+ GND B+ NC NC GND 5V 5V GND NC NC
Pin Layout
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6 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Block Diagram
2.5" Solid State Disk
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7 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Reliability
Wear-Leveling algorithm
2.5" Solid State Disk
The controller supports static/dynamic wear leveling. When the host writes data, the controller will find and use the block with the lowest erase count among the free blocks. This is known as dynamic wear leveling. When the free blocks' erase count is higher than the data blocks', it will activate the static wear leveling, replacing the not so frequently used user blocks with the high erase count free blocks. ECC algorithm The controller uses BCH8/BCH15 ECC algorithm per 512 bytes. BCH8/BCH15 can correct up to 8 or 15 random error bits within 512 data bytes. Bad-block management When the flash encounters ECC failed, program fail or erase fail, the controller will mark the block as bad block to prevent the used of this block and caused data lost later on.
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8 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SATA Interface
Out of bank signaling
2.5" Solid State Disk
There shall be three Out Of Band (OOB) signals used/detected by the Phy: COMRESET, COMINIT, and COMWAKE. COMINIT, COMRESET and COMWAKE OOB signaling shall be achieved by transmission of either a burst of four Gen1 ALIGNP primitives or a burst composed of four Gen1 Dwords with each Dword composed of four D24.3 characters, each burst having a duration of 160 UIOOB. Each burst is followed by idle periods (at common-mode levels), having durations as depicted in Figure 4 and Table 2.
Figure 4 : OOB signals
Table 2 : OOB signal times
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9 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
COMRESET
2.5" Solid State Disk
COMRESET always originates from the host controller, and forces a hardware reset in the device. It is indicated by transmitting bursts of data separated by an idle bus condition. The OOB COMRESET signal shall consist of no less than six data bursts, including inter-burst temporal spacing. The COMRESET signal shall be: 1) Sustained/continued uninterrupted as long as the system hard reset is asserted, or 2) Started during the system hardware reset and ended some time after the negation of system hardware reset, or 3) Transmitted immediately following the negation of the system hardware reset signal. The host controller shall ignore any signal received from the device from the assertion of the hardware reset signal until the COMRESET signal is transmitted. Each burst shall be 160 Gen1 UI's long (106.7 ns) and each inter-burst idle state shall be 480 Gen1 UI's long (320 ns). A COMRESET detector looksfor four consecutive bursts with 320 ns spacing (nominal). Any spacing less than 175 ns or greater than 525 ns shall invalidate the COMRESET detector output. The COMRESET interface signal to the Phy layer shall initiate the Reset sequence shown in Figure 5 below. The interface shall be held inactive for at least 525 ns after the last burst to ensure far-end detector detects the negation properly.
Figure 5 : comreset sequence
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10 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Description:
2.5" Solid State Disk
1. Host/device are powered and operating normally with some form of active communication. 2. Some condition in the host causes the host to issue COMRESET 3. Host releases COMRESET. Once the condition causing the COMRESET is released, the host releases the COMRESET signal and puts the bus in a quiescent condition. 4. Device issues COMINIT - When the device detects the release of COMRESET, it responds with a COMINIT. This is also the entry point if the device is late starting. The device may initiate communications at any time by issuing a COMINIT. 5. Host calibrates and issues a COMWAKE. 6. Device responds - The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional). Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the ALIGN sequence starting at the device's highest supported speed. After ALIGNP Dwords have been sent for 54.6us (2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives received from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are available the device tries the next lower supported speed by sending ALIGNP Dwords at that rate for 54.6 us (2048 nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed has been reached without response from the host, the device enters an error state. 7. Host locks - after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate. Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at the same speed as received. A host shall be designed such that it acquires lock in 54.6us (2048 nominal Gen1 Dword times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting the release of COMWAKE to receive the first ALIGNP. This ensures interoperability with multi-generational and synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the power-on sequence - repeating indefinitely until told to stop by the Application layer. 8. Device locks - the device locks to the ALIGN sequence and, when ready, sends SYNCP indicating it is ready to start normal operation. 9. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation may begin.
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11 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
COMINIT
2.5" Solid State Disk
COMINIT always originates from the drive and requests a communication initialization. It is electrically identical to the COMRESET signal except that it originates from the device and is sent to the host. It is used by the device to request a reset from the host in accordance to the sequence shown in Figure 6, below.
Figure 6 : cominit sequence Description: 1. Host/device are powered and operating normally with some form of active communication. 2. Some condition in the device causes the device to issues a COMINIT 3. Host calibrates and issues a COMWAKE. 4. Device responds - The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional). Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the ALIGN sequence starting at the device's highest supported speed. After ALIGNP Dwords have been sent for 54.6 us (2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives received
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12 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
2.5" Solid State Disk
from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are available the device tries the next lower supported speed by sending ALIGNP Dwords at that rate for 54.6 us (2048 nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed has been reached without response from the host, the device enters an error state. 5. Host locks - after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate. Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at the same speed as received. A host shall be designed such that it acquires lock in 54.6 us (2048 nominal Gen1 Dword times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting the release of COMWAKE to receive the first ALIGNP. This ensures interoperability with multi-generational and synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the power-on sequence - repeating indefinitely until told to stop by the Application layer. 6. Device locks - the device locks to the ALIGN sequence and, when ready, sends SYNCP indicating it is ready to start normal operation. 6. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation may begin.
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13 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Power on sequence timing diagram
2.5" Solid State Disk
The following timing diagrams and descriptions are provided for clarity and are informative.
Figure 7 : power on sequence Description: 1. Host/device power-off - Host and device power-off. 2. Power is applied - Host side signal conditioning pulls TX and RX pairs to neutral state (common mode voltage). 3. Host issues COMRESET 4. Host releases COMRESET. Once the power-on reset is released, the host releases the COMRESET signal and puts the bus in a quiescent condition. 5. Device issues COMINIT - When the device detects the release of COMRESET, it responds with a COMINIT. This is also the entry point if the device is late starting. The device may initiate communications at any time by issuing a COMINIT. 6. Host calibrates and issues a COMWAKE. 7. Device responds - The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional).
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14 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
2.5" Solid State Disk
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the ALIGN sequence starting at the device's highest supported speed. After ALIGNP primitives have been sent for 54.6 us (2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives received from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are available the device tries the next lower supported speed by sending ALIGNP primitives at that rate for 54.6 us (2048 nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed has been reached without response from the host, the device shall enter an error state. 8. Host locks - after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate. Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at the same speed as received. A host shall be designed such that it acquires lock in 54.6 us (2048 nominal Gen1 Dword times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting the release of COMWAKE to receive the first ALIGNP. This insures interoperability with multi-generational and synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the power-on sequence - repeating indefinitely until told to stop by the Application layer. 9. Device locks - the device locks to the ALIGN sequence and, when ready, sends the SYNCP primitive indicating it is ready to start normal operation. 10. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation may begin.
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15 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
ATA command register This table with the following paragraphs summarizes the ATA command set.
2.5" Solid State Disk
Command Table
Command Name
CHECK POWER MODE EXECUTE DIAGNOSTICS FLUSH CACHE FLUSH CACHE EXT IDENTIFY DEVICE IDLE IDLE IMMEDIATE INITIALIZE DEVICE PARAMETERS READ BUFFER READ DMA READ DMA EXT READ FPDMA QUEUED READ LOG EXT READ MULTIPLE READ MULTIPLE EXT READ SECTOR(S) READ SECTOR(S) EXT READ VERIFY SECTOR(S) READ VERIFY SECTOR(S) EXT RECALIBRATE SECURITY DISABLE PASSWORD SECURITY ERASE PREPARE SECURITY ERASE UNIT SECURITY FREEZE LOCK SECURITY SET PASSWORD
Code SC
E5h 90h E7h EAh ECh E3h E1h 91h E4h C8h or C9h 25h 60h 2Fh C4h 29h 20h or 21h 24h 40h or 41h 42h 10h F6h F3h F4h F5h F1h X X X X X O X O X O O O O O O O O O O X X X X X X
PARAMETERS USED SN
X X X X X X X X X O O O O O O O O O O X X X X X X
CY
X X X X X X X X X O O O O O O O O O O X X X X X X
DR
O O O O O O O O O O O O O O O O O O O O O O O O O
HD
X X O O X X X O X O O O O O O O O O O X X X X X X
FT
X X X X X X X X X X X O O X X X X X X X X X X X X
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16 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SECURITY UNLOCK SEEK SET FEATURES SET MULTIPLE MODE SLEEP SMART STANDBY STANDBY IMMEDIATE WRITE BUFFER WRITE DMA WRITE DMA EXT WRITE DMA FUA EXT WRITE FPDMA QUEUED WRITE MULTIPLE WRITE MULTIPLE EXT WRITE MULTIPLE FUA EXT WRITE SECTOR(S) WRITE SECTOR(S) EXT F2h 7xh EFh C6h E6h B0h E2h E0h E8h CAh or CBh 35h 3Dh 61h C5h 39h CEh 30h or 31h 34h X X O O X X X X X O O O O O O O O O X X X X X X X X X O O O O O O O O O X O X X X O X X X O O O O O O O O O
2.5" Solid State Disk
O O O O O O O O O O O O O O O O O O X O X X X X X X X O O O O O O O O O X X O X X O X X X X X X O X X X X X
Note: O = Valid, X = Don't care SC = Sector Count Register SN = Sector Number Register CY = Cylinder Low/High Register DR = DEVICE SELECT Bit (DEVICE/HEAD Register Bit 4) HD = HEAD SELECT Bit (DEVICE/HEAD Register Bit 3-0) FT = Features Register
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17 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
ATA Command Specifications
CHECK POWER MODE (E5h) The host can use this command to determine the current power management mode.
2.5" Solid State Disk
EXECUTE DIAGNOSTICS (90h) This command performs the internal diagnostic tests implemented by the drive.
FLUSH CACHE (E7h) This command is used by the host to request the device to flush the write cache. If there is data in the write cache, that data shall be written to the media. The BSY bit shall remain set to one until all data has been successfully written or an error occurs.
FLUSH CACHE EXT (EAh) 48-bit feature set mandatory command. This command is used by the host to request the device to flush the write cache. If there is data in the write cache, that data shall be written to the media. The BSY bit shall remain set to one until all data has been successfully written or an error occurs.
IDENTIFY DEVICE (ECh) This commands read out 512Bytes of drive parameter information. Parameter Information consists of the arrangement and value as shown in the following table. This command enables the host to receive the Identify Drive Information from the device.
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18 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Identify Device Information Default Value
Word Value F/V
F X 0 0040h X X V X 15 0 = ATA device 14-8 Retired 7-6 5-3 2 1 Obsolete Retired Reserved Retired
2.5" Solid State Disk
Description
General configuration bit-significant information:
0 Reserved Number of logical cylinders 1 2 3 4-5 6 7-8 9 10-19 20-21 22 23-26 27-46 3C8Ah 3FFFh C837h 0010h 0000h 003Fh 0000h 0000h XXXXh 0000h 0000h XXXXh XXXXh X F X X F F F 47 48 8001h 0000h F F F F V F X F 15498 (8GB capacity) 16383 (above 16GB capacity) Specific configuration Number of logical heads Retired Number of logical sector per logical track Reserved for assignment by the CompactFlash_ Association Retired Serial number (20 ASCII characters) Retired Obsolete Firmware revision (8 ASCII characters) Model number (40 ASCII characters) 15-8 7-0 80h 00h = Reserved 01h = Maximum number of 1 sectors on READ/WRITE MULTIPLE commands
Reserved Capabilities 15-14 Reserved for the IDENTIFY PACKET DEVICE command. 13 1 = Standby timer values as specified in this standard are supported 12 0 = Standby timer values shall be managed by the device Reserved for the IDENTIFY PACKET DEVICE command. 1 = IORDY supported 0 = IORDY may be supported 1 = IORDY may be disabled 1 = LBA supported 1 = DMA supported. Retired Shall be cleared to zero. Shall be set to one. Reserved.
F
49
2F00h
F F F F X F F
11 10 9 8 7-0 15 14 13-2
Capabilities 50 4000h
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19 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
X F F 51 52 0000h 0000h X F F 53 0007h F X 54 55 56 57-58 XXXXh 00XXh XXXXh XXXXh X X X X V V F X F V V 63 0007h V 1 0 15-8 7-0 Obsolete
2.5" Solid State Disk
Shall be set to one to indicate a device specific Standby timer value minimum. PIO data transfer cycle timing mode Reserved
Obsolete 15-3 2 1 0 Reserved 1 = the fields reported in word 88 are valid 0 = the fields reported in word 88 are not valid 1 = the fields reported in words 70:64 are valid 0 = the fields reported in words 70:64 are not valid 1 = the fields reported in words 58:54 are valid 0 = the fields reported in words 58:54 are not valid
Number of current cylinders Number of current heads Number of current sector per track Current capacity in sectors 15-9 Reserved 1 = Multiple sector setting is valid xxh = Setting for number of sectors that shall be transferred per interrupt on R/W Multiple command 8 7-0
59 60-61 62
0101h XXXXh 0000h
Total number of user addressable sectors Obsolete 15-11 Reserved 10 9 8 7-3 2 1 0 1 = Multiword DMA mode 2 is selected 0 = Multiword DMA mode 2 is not selected 1 = Multiword DMA mode 1 is selected 0 = Multiword DMA mode 1 is not selected 1 = Multiword DMA mode 0 is selected 0 = Multiword DMA mode 0 is not selected Reserved 1 = Multiword DMA mode 2 and below are supported 1 = Multiword DMA mode 1 and below are supported 1 = Multiword DMA mode 0 is supported
F F F 64 65 66 67 68 69-70 71-74 75 0003h 0078h 0078h 0078h 0078h 0000h 0000h 0000h F F F F F
15-8 Reserved 7-0 Advanced PIO modes supported Minimum Multiword DMA transfer cycle time per word Manufacturer's recommended Multiword DMA transfer cycle time Minimum PIO transfer cycle time without flow control Minimum PIO transfer cycle time with IORDY flow control Reserved Reserved for the IDENTIFY PACKET DEVICE command Queue depth
Transcend Information Inc.
20 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
15-5 F 4-0 Reserved Maximum queue depth - 1
2.5" Solid State Disk
Serial ATA Capabilities 15-11 Reserved for Serial ATA F F 76 0106h F F F F 77 0000h 10 9 8 7-3 2 1 0 1 = Supports Phy Event Counts 1 = Supports receipt of host initiated power management requests 1 = Supports the NCQ feature set Reserved for Serial ATA 1 = Supports SATA Gen2 Signaling Speed (3.0Gb/s) 1 = Supports SATA Gen1 Signaling Speed (1.5Gb/s) Shall be cleared to zero
Reserved for Serial ATA Serial ATA feature supported 15-7 Reserved for Serial ATA F F F F F F 6 5 4 3 2 1 0 1 = Device supports Software Settings Preservation Reserved for Serial ATA 1 = Device supports in-order data delivery 1 = Device supports initiating power management 1 = Device supports DMA Setup auto-activation 1 = Device supports non-zero buffer offsets Shall be cleared to zero
78
0004h
Serial ATA feature enabled 15-7 Reserved for Serial ATA V 79 0000h V V V V F 6 5 4 3 2 1 0 1 = Software Settings Preservation enabled Reserved for Serial ATA 1 = In-order data delivery enabled 1 = Device initiated power management enabled 1 = DMA Setup auto-activation enabled 1 = Non-zero buffer offsets enabled Shall be cleared to zero
Major version number 0000h or FFFFh = device does not report version 15 Reserved F F F F 80 00F0h F F F F F F F F X 14 13 12 11 10 9 8 7 6 5 4 3 2 Reserved for ATA/ATAPI-14 Reserved for ATA/ATAPI-13 Reserved for ATA/ATAPI-12 Reserved for ATA/ATAPI-11 Reserved for ATA/ATAPI-10 Reserved for ATA/ATAPI-9 Reserved for ATA/ATAPI-8 1 = supports ATA/ATAPI-7 1 = supports ATA/ATAPI-6 1 = supports ATA/ATAPI-5 1 = supports ATA/ATAPI-4 Obsolete Obsolete
Transcend Information Inc.
21 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
X 81 0000h F X F F F X F 82 304Bh F F F F F F F F F F F F F F F F F 83 7400h F F F F F F F F F F F 84 4060h X F F F 1 0 Obsolete Reserved
2.5" Solid State Disk
Minor version number Command and feature sets supported 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Obsolete 1 = NOP command supported 1 = READ BUFFER command supported 1 = WRITE BUFFER command supported Obsolete 1 = Host Protected Area feature set supported 1 = DEVICE RESET command supported 1 = SERVICE interrupt supported 1 = release interrupt supported 1 = look-ahead supported 1 = write cache supported Shall be cleared to zero to indicate that the PACKET Command feature set is not supported. 1 = mandatory Power Management feature set supported 1 = Removable Media feature set supported 1 = Security Mode feature set supported 1 = SMART feature set supported
Command and feature sets supported 15 Shall be cleared to zero 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Shall be set to one 1 = The FLUSH CACHE EXT command is supported Shall be set to one to indicate that the mandatory FLUSH CACHE command is supported 1 = The DCO feature set is supported 1 = The 48-bit Address feature set is suported 1 = The AAM feature set is supported 1 = SET MAX security extension supported Reserved 1 = SET FEATURES subcommand required to spinup after power-up 1 = Power-Up In Standby feature set supported 1 = Removable Media Status Notification feature set supported 1 = Advanced Power Management feature set supported 1 = CFA feature set supported 1 = READ/WRITE DMA QUEUED supported 1 = DOWNLOAD MICROCODE command supported
Command and feature sets supported 15 Shall be cleared to zero 14 13 Shall be set to one 1 = The IDLE IMMEDIATE command with UNLOAD feature is supported
12-11 Reserved for TLC 10-9 Obsolete 8 7 6 1 = The 64-bit World wide name is supported 1 = The WRITE DMA QUEUED FUA EXT command is supported 1 = The WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands are supported
Transcend Information Inc.
22 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
F F F F F F X F F F X V F 85 3069h V V V V F F X V V F F F F F 86 3400h V V F V X V F F F F F 87 4060h F X 5 4 3 2 1 0 1 = The GPL feature set is supported
2.5" Solid State Disk
1 = The Streaming feature set is supported 1 = The Media Card Pass Through Command feature set is supported 1 = Media serial number is supported 1 = SMART self-test supported 1 = SMART error logging supported
Command and feature sets supported or enable (Depend on the host enabling) 15 Obsolete 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 1 = The NOP command is supported 1 = The READ BUFFER command is supported 1 = The WRITE BUFFER command is supported Obsolete 1 = HPA feature set is supported Shall be cleared to zero to indicate that the DEVICE RESET command is not supported 1 = The SERVICE interrupt is enabled 1 = The release interrupt is enabled 1 = Read look-ahead is enabled 1 = The volatile write cache is enabled Shall be cleared to zero to indicate that the PACKET Command feature set is not supported. Shall be set to one to indicate that the mandatory Power Management feature is supported Obsolete 1 = The Security feature set is enabled 1 = The SMART feature set is enabled 1 = Words 119-120 are valid Reserved 1 = FLUSH CACHE EXT command supported 1 = FLUSH CACHE command supported 1 = The DCO feature set is supported 1 = The 48-bit Address feature set is supported 1 = The AAM feature set is enable 1 = The SET MAX security extension is enabled by SET MAX SET PASSWORD Reserved for Address Offset Reserved Area Boot Method 1 = SET FEATURES subcommand required to spin-up after power-up 1 = The PUIS feature set is enabled Obsolete 1 = The APM feature set is enabled 1 = The CFA feature set is supported 1 = The TCQ feature set is supported 1 = The DOWNLOAD MICROCODE command is supported Shall be cleared to zero Shall be set to one
Command and feature sets supported or enable (Depend on the host enabling)
Command and feature sets supported or enabled (Depend on the host enabling)
13 1 = The IDLE IMMEDIATE command with UNLOAD feature is supported 12-11 Reserved for TLC 10-9 Obsolete
Transcend Information Inc.
23 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
F F F F X V V F F 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 F F F F F F F 89 90 91 92 93 0001h 0001h 0000h FFFEh 0000h F F V V X F V 95-99 0000h 6 5 4 3 2 1 0 15-8 7-0 1 = The 64-bit World wide name is supported
2.5" Solid State Disk
1 = The WRITE DMA QUEUED FUA EXT command is supported 1 = The WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands are supported 1 = The GPL feature set is supported Obsolete 1 = The Media Card Pass Through Command feature set is supported 1 = Media serial number is supported 1 = SMART self-test supported 1 = SMART error logging supported Reserved 1 = Ultra DMA mode 6 is selected 0 = Ultra DMA mode 6 is not selected 1 = Ultra DMA mode 5 is selected 0 = Ultra DMA mode 5 is not selected 1 = Ultra DMA mode 4 is selected 0 = Ultra DMA mode 4 is not selected 1 = Ultra DMA mode 3 is selected 0 = Ultra DMA mode 3 is not selected 1 = Ultra DMA mode 2 is selected 0 = Ultra DMA mode 2 is not selected 1 = Ultra DMA mode 1 is selected 0 = Ultra DMA mode 1 is not selected 1 = Ultra DMA mode 0 is selected 0 = Ultra DMA mode 0 is not selected Reserved 1 = Ultra DMA mode 6 and below are supported 1 = Ultra DMA mode 5 and below are supported 1 = Ultra DMA mode 4 and below are supported 1 = Ultra DMA mode 3 and below are supported 1 = Ultra DMA mode 2 and below are supported 1 = Ultra DMA mode 1 and below are supported 1 = Ultra DMA mode 0 is supported Reserved Time required for Normal Erase mode SECURITY ERASE UNIT command
Ultra DMA modes (XX depends on the host selecting) V V V V V 88 XX7Fh V V
15-8 Reserved 7-0 Time required for Enhanced Erase mode SECURITY ERASE UNIT command Current APM level value Master Password Identifier Hardware reset result Current AAM value 15-8 Vendor's recommended AAM value 7-0 Current AAM value Reserved
94
0000h
Transcend Information Inc.
24 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
100-103 104-105 XXXXh 0000h F 106 4000h F F F F 107-118 0000h F F F F F F F X Reserved Physical sector size / logical sector size 15 Shall be cleared to zero 14 13 Shall be set to one 1 = Device has multiple logical sectors per physical sector
2.5" Solid State Disk
Total Number of User Addressable Logical Sectors for 48-bit commands (QWord)
12 1 = Device Logical Sector longer than 256 Words 11-4 Reserved 3-0 2x logical sectors per physical sector Reserved Commands and feature sets supported (Continued from words 84:82) 15 Shall be cleared to zero 14 Shall be set to one 13-6 Reserved 5 4 3 2 1 0 15 14 1= The Free-fall Control feature set is supported 1 = The DOWNLOAD MICROCODE command with mode 3 is supported 1 = The READ LOG DMA EXT and WRITE LOG DMA EXT commands are supported 1 = The WRITE UNCORRECTABLE EXT command is supported 1 = The Write-Read-Verify feature set is supported Reserved for DDT Shall be cleared to zero Shall be set to one
119
4000h
Commands and feature sets supported or enabled (Continued from words 87:85) F F V 120 4000h F F F V 121-126 127 0000h 0000h X F V F F 128 0021h V V V V F 129-159 0000h X
13-6 Reserved 5 1= The Free-fall Control feature set is enabled 4 3 2 1 0 1 = The DOWNLOAD MICROCODE command with mode 3 is supported 1 = The READ LOG DMA EXT and WRITE LOG DMA EXT commands are supported 1 = The WRITE UNCORRECTABLE EXT command is supported 1 = The Write-Read-Verify feature set is enabled Reserved for DDT
Reserved for expended supported and enabled settings Obsolete Security status 15-9 Reserved 8 Security level 0 = High, 1 = Maximum 7-6 5 4 3 2 1 0 Reserved 1 = Enhanced security erase supported 1 = Security count expired 1 = Security frozen 1 = Security locked 1 = Security enabled 1 = Security supported
Vendor specific
Transcend Information Inc.
25 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
160-216 217 218-254 0000h 0001h 0000h F Reserved Nominal media rotation rate Reserved Integrity word 15-8 Checksum 7-0 Signature
2.5" Solid State Disk
255
0000h
X
Key: F/V = Fixed/variable content F = the content of the word is fixed and does not change. For removable media devices, these values may change when media is removed or changed. V = the contents of the word is variable and may change depending on the state of the device or the commands executed by the device. X = the content of the word may be fixed or variable. IDLE (E3h) This command causes the device to set BSY, enter the Idle mode, clear BSY and generate an interrupt. If sector count is non-zero, the automatic power down mode is enabled. If the sector count is zero, the automatic power mode is disabled.
IDLE IMMEDIATE (E1h) This command causes the device to set BSY, enter the Idle(Read) mode, clear BSY and generate an interrupt.
INITIALIZE DEVICE PARAMETERS (91h) This command enables the host to set the number of sectors per track and the number of tracks per heads.
READ BUFFER (E4h) The READ BUFFER command enables the host to read a 512-byte block of data. READ DMA (C8h) Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value. A sector count of zero requests 256 sectors. READ DMA EXT (25h) 48-bit feature set mandatory command. Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value. A sector count of zero requests 65536 sectors. READ FPDMA QUEUED (60h)
Transcend Information Inc.
26 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
2.5" Solid State Disk
NCQ feature set mandatory 48-bit command. This command requests that data to be transferred from the device to the host. READ LOG EXT (2Fh) General purpose logging feature set mandatory 48-bit command. This command returns the specified log to the host. Log Address 00h 10h READ MULTIPLE (C4h) This command performs similarly to the Read Sectors command. Interrupts are not generated on each sector, but on the transfer of a block which contains the number of sectors defined by a Set Multiple command. READ MULTIPLE EXT (29h) 48-bit feature set mandatory command. This command performs similarly to the Read Sectors command. Interrupts are not generated on each sector, but on the transfer of a block which contains the number of sectors defined by a Set Multiple command. READ SECTOR(S) (20h/21h) This command reads 1 to 256 sectors as specified in the Sector Count register from sectors which is set by Sector number register. A sector count of 0 requests 256 sectors. The transfer beings specified in the Sector Number register. READ SECTOR(S) EXT (24h) 48-bit feature set mandatory command. This command reads 1 to 65536 sectors as specified in the Sector Count register from sectors which is set by Sector number register. A sector count of zero requests 65536 sectors. The transfer beings specified in the Sector Number register. READ VERIFY SECTOR(S) (40h/41h) This command verifies one or more sectors on the drive by transferring data from the flash media to the data buffer in the drive and verifying that the ECC is correct. This command is identical to the Read Sectors command, except that DRQ is never set and no data is transferred to the host. Log Name Log directory NCQ Command Error Feature Set N/A NCQ R/W RO RO Access GPL GPL
READ VERIFY SECTOR(S) EXT (42h) 48-bit feature set mandatory command. This command verifies one or more sectors on the drive by transferring data from
Transcend Information Inc.
27 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
2.5" Solid State Disk
the flash media to the data buffer in the drive and verifying that the ECC is correct. This command is identical to the Read Sectors command, except that DRQ is never set and no data is transferred to the host.
RECALIBRATE (10h) The current drive performs no processing if it receives this command. It is supported for backward compatibility with previous devices.
SECURITY DISABLE PASSWORD (F6h) Disables any previously set user password and cancels the lock. The host transfers 512 bytes of data, as shown in the following table, to the drive. The transferred data contains a user or master password, which the drive compares with the saved password. If they match, the drive cancels the lock. The master password is still saved. It is re-enabled by issuing the SECURITY SET PASSWORD command to re-set a user password.
SECURITY ERASE PREPARE (F3h) This command shall be issued immediately before the Security Erase Unit command to enable erasing and unlocking. This command prevents accidental loss of data on the drive.
SECURITY ERASE UNIT (F4h) The host uses this command to transfer 512 bytes of data, as shown in the following table, to the drive. The transferred data contains a user or master password, which the drive compares with the saved password. If they match, the drive deletes user data, disables the user password, and cancels the lock. The master password is still saved. It is re-enabled by issuing the SECURITY SET PASSWORD command to re-set a user password.
Transcend Information Inc.
28 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SECURITY FREEZE LOCK (F5h)
2.5" Solid State Disk
Causes the drive to enter Frozen mode. Once this command has been executed, the following commands to update a lock result in the Aborted Command error: * SECURITY SET PASSWORD * SECURITY UNLOCK * SECURITY DISABLE PASSWORD * SECURITY ERASE PREPARE * SECURITY ERASE UNIT The drive exits from Frozen mode upon a power-off or hard reset. If the SECURITY FREEZE LOCK command is issued when the drive is placed in Frozen mode, the drive executes the command, staying in Frozen mode.
SECURITY SET PASSWORD (F1h) This command set user password or master password. The host outputs sector data with PIO data-out protocol to indicate the information defined in the following table.
Security set Password data content
Word 0 Control word Bit 0 Identifier 0=set user password 1=set master password Bits 1-7 Bit 8 Reserved Security level 0=High 1=Maximum Bits 9-15 1-16 17-255 Reserved Content
Password (32 bytes) Reserved
SECURITY UNLOCK (F2h) This command disable LOCKED MODE of the device. This command transfers 512 bytes of data from the host with PIO data-out protocol. The following table defines the content of this information.
Transcend Information Inc.
29 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Security Unlock information
Word 0 Control word Bit 0 Identifier Content
2.5" Solid State Disk
0=compare user password 1=compare master password
Bits 1-15 1-16 17-255
Reserved
Password (32 bytes) Reserved
SEEK (7xh) This command is effectively a NOP command to the device although it does perform a range check.
SET FEATURES (EFh) This command set parameter to Features register and set drive's operation. For transfer mode, parameter is set to Sector Count register. This command is used by the host to establish or select certain features.
Features register Value and settable operating mode
Value 02h 03h 55h 82h AAh Function Enable write cache Set transfer mode based on value in Sector Count register. Disable read look-ahead feature Disable write cache Enable read look-ahead feature
SET MULTIPLE MODE (C6h) This command enables the device to perform READ MULTIPLE and WRITE MULTIPLE operations and establishes the block count for these commands.
SLEEP (E6h) This command causes the device to set BSY, enter the Sleep mode, clear BSY and generate an interrupt.
Transcend Information Inc.
30 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SMART Function Set (B0h)
2.5" Solid State Disk
Performs different processing required for predicting device failures, according to the subcommand specified in the Features register. If the Features register contains an unsupported value, the Aborted Command error is returned. If the SMART function is disabled, any subcommand other than SMART ENABLE OPERATIONS results in the Aborted Command error.
Code D0h D1h D2h D3h D5h D6h D8h D9h DAh
Smart Subcommand READ DATA READ ATTRIBUTE THRESHOLDS ENABLE/DISABLE ATTRIBUTE AUTOSAVE SAVE ATTRIBUTE VALUES Reserved Reserved ENABLE OPERATIONS DISABLE OPERATIONS RETURN STATUS
Transcend Information Inc.
31 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SMART READ DATA
2.5" Solid State Disk
This command returns 512-byte SMART Data Structure to the host with PIO data-in protocol. The register file has to contain D0h for Features register, 4Fh for LBA Mid register and C2h for the LBA High register.
Byte 0-1 2-13 14-361 362 363 364-365 366 367 368-369 370-385 386-510 511
Description Data structure revision number 1st attribute data 2nd-30th Individual attribute data Off-line data collection status Reserved Total time in seconds to complete off-line data collection Reserved Off-line data collection capability SMART capability Reserved Reserved Data structure Checksum
Byte 2-361: Individual attribute data
Byte 0 1-2 3 4-11 Description Attribute ID Status Flag (0x0002) Attribute Value (0x64) Vendor Specific
Transcend Information Inc.
32 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
2.5" Solid State Disk
The attribute ID information is listed in the following table
ID Description Byte 0 1 2 E5h Halt System ID, Flash ID 3 4 5 6 7 0 1 2 E8h Firmware version information 3 4 5 6 7 0 1 2 E9h ECC Fail Record 3 4 5 6 7 0 EAh Average Erase Count, Max Erase Count 1 2 3 Detail Information Description Halt System ID Flash ID (byte 1) Flash ID (byte 2) Flash ID (byte 3) Flash ID (byte 4) Flash ID (byte 5) Flash ID (byte 6) Flash ID (byte 7) Year (High Byte, ASCII) Year (Low Byte, ASCII) Month (High Byte, ASCII) Month (Low Byte, ASCII) Day (High Byte, ASCII) Day (Low Byte, ASCII) Channels (binary) Banks (binary) ECC fail number Row address 3 Row address 2 Row address 1 Channel number of last ECC fail Bank number of last ECC fail Reserved Reserved Average Erase Count (High Byte) Average Erase Count Average Erase Count (Low Byte) Max Erase Count (High Byte)
Transcend Information Inc.
33 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
4 5 6 7 0 1 2 3 EBh Good Block Count, System Block Count 4 5 6 7
2.5" Solid State Disk
Max Erase Count Max Erase Count (Low Byte) Reserved Reserved Good Block Count (High Byte) Good Block Count Good Block Count (Low Byte) System(Free) Block Count (High Byte) System(Free) Block Count (Low Byte) Reserved Reserved Reserved
ECh-FFh
Reserved
SMART READ ATTRIBUTE THRESHOLD This transfers 512 bytes of drive failure threshold data to the host. SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE Enables or disables the attribute value autosave function. This command specifies whether the current attribute values are automatically saved to the drive when it changes the mode. This setting is maintained when the power is turned on and off. SMART SAVE ATTRIBUTE VALUE Saves any modified attribute values. SMART EXECUTE OFF-LINE IMMEDIATE This command of Non-data input causes the controller to immediately initiate the set of activities that collect SMART data in a off-line mode and then save data to the Nand flash memory, or execute a selfdiagnostic test routine in either captive or off-line mode. SMART ENABL OPERATIONS Enables the SMART function. This setting is maintained when the power is turned off and then back on. Once the SMART function is enabled, subsequent SMART ENABLE OPERATIONS commands do not affect any parameters.
Transcend Information Inc.
34 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
SMART DISABLE OPERATIONS
2.5" Solid State Disk
Disables the SMART function. Upon receiving the command, the drive disables all SMART operations. This setting is maintained when the power is turned off and then back on. Once this command has been received, all SMART commands other than SMART ENABLE OPERATIONS are aborted with the Aborted Command error. This command disables all SMART capabilities including any and all timer and event count functions related exclusively to this feature. After command acceptance, this controller will disable all SMART operations. SMART data in no longer be monitored or saved. The state of SMART is preserved across power cycles.
SMART RETURN STATUS Reports the drive reliability status. Values reported when a predicted defect has not been detected: Cylinder Low register: 4Fh Cylinder High register: C2h Values reported when a predicted defect has been detected: Cylinder Low register: F4h Cylinder High register: 2Ch
SMART ENABLE/DISABLE AUTOMATIC OFF-LINE Enables (when Sector Count register = "F8h") or disables (Sector Count register = "00h") the automatic off-line data collection function. The automatic collection is disabled if a value of "00h" is set in the Sector Count register before a subcommand is issued. If automatic collection is disabled, the drive can still save attribute information during normal operation, such as during the power-on/off sequence or error correction sequence. The automatic collection function is enabled if a value of "F8h" is set in the Sector Count register before the command is issued. Values other than "00h" and "F8h" are vendor-specific.
Transcend Information Inc.
35 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
STANDBY (E2h)
2.5" Solid State Disk
This command causes the device to set BSY, enter the Sleep mode (which corresponds to the ATA "Standby" Mode), clear BSY and return the interrupt immediately.
STANDBY IMMEDIATE (E0h) This command causes the drive to set BSY, enter the Sleep mode (which corresponds to the ATA "Standby" Mode), clear BSY and return the interrupt immediately.
WRITE BUFFER (E8h) This command enables the host to write the contents of one 512-byte block of data to the device's buffer.
WRITE DMA (CAh) Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value.
WRITE DMA EXT (35h) 48-bit feature set mandatory command. Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value.
WRITE DMA FUA EXT (3Dh) 48-bit feature set mandatory command. This command provides the same function as the WRITE DMA EXT command except that regardless of whether volatile and/or non-volatile write caching in the device is enabled or not, the user data shall be written to non-volatile media before command completion is reported.
WRITE FPDMA QUEUED (61h) NCQ feature set mandatory 48-bit command. This command causes data to be transferred from the host to the device.
WRITE MULTIPLE (C5h) This command is similar to the Write Sectors command. Interrupts are not presented on each sector, but on the transfer of a block which contains the number of sectors defined by Set Multiple command.
Transcend Information Inc.
36 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
WRITE MULTIPLE EXT (39h)
2.5" Solid State Disk
48-bit feature set mandatory command. This command is similar to the Write Sectors command. Interrupts are not presented on each sector, but on the transfer of a block which contains the number of sectors defined by Set Multiple command.
WRITE MULTIPLE FUA EXT (CEh) 48-bit feature set mandatory command. This command provides the same functionality as the WRITE MULTIPLE EXT command except that regardless of whether volatile and/or non-volatile write caching in the device is enabled or not, the user data shall be written to non-volatile media before command completion is reported.
WRITE SECTOR(S) (30h/31h) Write data to a specified number of sectors (1 to 256, as specified with the Sector Count register) from the specified address. Specify "00h" to write 256 sectors.
WRITE SECTOR(S) EXT (34h) 48-bit feature set mandatory command. Write data to a specified number of sectors (1 to 65536, as specified with the Sector Count register) from the specified address. Specify "00h" to write 65536 sectors.
Transcend Information Inc.
37 V2.4
TS8GSSD25S--S TS8GSSD25S S TS16GSSD25S--S//M TS16GSSD25S S M TS32GSSD25S--S//M TS32GSSD25S S M TS64GSSD25S--S//M TS64GSSD25S S M TS128GSSD25S--M TS128GSSD25S M TS192GSSD25S--M TS192GSSD25S M
Ordering Information
2.5" Solid State Disk
The above technical information is based on industry standard data and has been tested to be reliable. However, Transcend makes no warranty, either expressed or implied, as to its accuracy and assumes no liability in connection with the use of this product. Transcend reserves the right to make changes to the specifications at any time without prior notice.
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Transcend Information Inc.
38 V2.4

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