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FEATURES AND SPECIFICATIONS Features and Benefits 1000Base-T compliant, meets IEEE802.3z, ab specifications and is GBIC SFF-8053 Rev 5.5 compliant - For improved intermatability 1.63 Watt power requirement - Low heat output Hot pluggable - Eliminates need to power down to remove or install transceiver Zinc back shells - Improved EMI performance Auto-negotiation - Allows networking equipment to automatically determine and adjust to the required settings Automatic MDI crossover - Eliminates the need for crossover cables or cross-wired (MDIX) ports Link monitor - Detects loss of signal Serial ID - Allows individual identification of each GBIC transceiver Auto-Power shutdown - Saves energy Applications Networking Equipment - Switches - Routers Reference Information Packaging: 1 Mates With: GBIC Cage 73847 series SCA-2 Receptacle 74065 series Electrical Voltage: 5v Current: 350mA
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver 74740
Physical Zinc Diecast Backshell PCB Thickness: .062" Operating Temperature: 0 to 70 C
The 1000Base-T RJ-45 Gigabit Ethernet GBIC copper transceiver is a high performance integrated duplex data link for bi-directional communication over Cat-5 copper cable. The hot pluggable feature allows changing to or from another GBIC compatible module without having to remove system power. Serial ID is included.
ORDERING INFORMATION
Order Number 74740-0001 74740-0002 74740-0003 Description RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation On LOS GND RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation On LOS Toggle RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation Off LOS Toggle
FEATURES
Figure 1. RJ-45 GBIC 1000Base-T Application
Host Board C
GBIC Card MDC/ MDIO Transformer RJ-45 1000Base-T
MAC TBI
SERDES (e.g.)
GBIC Interface
IC Serial Interface
1000Base-T Transceiver BCM5421S IC Serial Interface
1000BASE-T RJ-45 GBIC FEATURES
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
GBIC Mode When the internal gigabit Ethernet transceiver (PHY) is configured to GBIC mode, the PHY can interface directly with the host serial/deserial (SERDES) interface. The host interface transmits and receives serial data differentially at 1.25Gbps. The copper interface is full featured and advertises full/half duplex, and 1000Base-T wire speed. Auto-Negotiation Auto-Negotiation is supported over both the twisted pair copper link and SERDES interface as defined in the IEEE 802.3 standards and is performed as part of the initial set-up of the link. The copper link is negotiated according to the IEEE 802.3 Clause 28, and Clause 37 is used in the negotiation of the SERDES interface. The two interfaces advertise 1000Base-T full-duplex, and master/slave relationships. The master establishes the time control from its local clock source. The slave however recovers the clock from the received data stream. The GBIC application is limited to 1000Base-T wire speed only. Auto-Negotiation on the SERDES link is always restarted when a change is detected on copper link (see Link Monitor and Loss-of-Signal for further details). Automatic MDI Crossover The 1000Base-T GBIC transceiver performs a MDI crossover during Auto-Negotiation eliminating the need for crossover cables or crosswired (MDIX) ports. Loss of Signal - Link Monitor Following Auto-Negotiation, the master and slave begin sending data over the twisted pair link. The master and slave continuously monitor the copper link for quality of data. The link status bit is set after one microsecond of quality data. If the quality of copper link drops below factory PHY minimums, the GBIC will drop the SERDES link, and assert the LOS I/O interface (optional) in less than 200 milliseconds. Auto Power Savings Mode When the copper link is lost, the GBIC automatically enters a low power mode reducing the chip power requirements. Full power mode resumes once the copper link is re-established. Not Implemented in GBIC Auto-Negotiation Next page exchange and detection of remote faults are not auto-negotiated.
AUTO-NEGOTIATION SUMMARY
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
Auto-Negotiation Features Supported: General: SERDES Auto-Negotiation is restarted when a change is detected on the copper link Auto power savings mode when copper link is lost Copper RJ-45 Interface: Auto-Negotiation Copper GBIC speed is 1000Base-T only Full/Half duplex Automatic MDI Crossover Master/Slave relationships Pause flow control (see flow charts) Host SERDES Interface: Differential SERDES Interface at 1.25Gpbs Master/Slave relationships SERDES recovers the clock from the received data stream Pause flow control (see flow charts) Not Implemented in GBIC Auto-Negotiation: Next page exchange Detect remote fault
GBIC OPERATIONAL FLOWCHARTS (74740-0001)
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
Link Dropout
Auto-Negotiation
Routine Start
Main
Yes
LOS GND Disable SERDES Interface
Good Copper Link No
No Yes
Wait for Copper Auto-Neg to Complete
Drop SERDES Link
Get Copper Auto-Neg Information Advertise to SERDES Enable SERDES Interface No Yes Get SERDES Auto-Neg Information Advertise to Copper
Restart Auto-Negotiation
Wait for SERDES Auto-Neg to Complete
Restart Auto-Neg
No Yes Return
Wait for Auto-Neg to Complete
GBIC OPERATIONAL FLOWCHARTS (74740-0002)
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
Link Dropout
Main
Auto-Negotiation
Routine Start
Yes
LOS HIGH Disable SERDES Interface
Good Copper Link No LOS HIGH
No Yes
Wait for Copper Auto-Neg to Complete
Get SERDES Auto-Neg Information Advertise to Copper
Drop SERDES Link
No Yes
Wait for SERDES Auto-Neg to Complete
Restart Auto-Negotiation
Get SERDES Auto-Neg Information Advertise to Copper
Restart Auto-Neg
No Yes Link is Good LOS LOW
Wait for Auto-Neg to Complete
Return
GBIC OPERATIONAL FLOWCHARTS (74740-0003)
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
Link Dropout
Main
Auto-Negotiation
Routine Start
Yes Good Copper Link LOS HIGH No
LOS HIGH Disable SERDES
No Yes
Wait for Copper Auto-Neg to Complete
Restart Auto-Negotiation
Get Copper Auto-Neg Information Advertise to SERDES
Enable SERDES
No Good Copper Link Yes Link is Good LOS LOW
Return
AUTO-NEGOTIATION SOFTWARE SELECTIONS
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
Through random I2C read commands, the host can change the auto-negotiation state of the GBIC. When auto-negotiation in the GBIC is off, the GBIC does not automatically query the host and advertise pause flow control on the copper interface. If the host requires advertisement of pause flow control and auto-negotiation is off, the host can set pause, and asymmetric pause using the defined I2C commands. Serial ID addresses 128-133 are used in the random I2C read commands. The read commands, and GBIC actions are defined in the I2C Command Table. I2C Command Table
I2C Read Address 128 ( 0x80 ) Description GBIC Auto-Negotiation Status * * 129 ( 0x81 ) Enable Auto-Negotiation * * * 130 ( 0x82 ) Disable Auto-Negotiation * * * 131 ( 0x83 ) Clear SERDES Pause Flow Control Advertisement * * 132 ( 0x84 ) SERDES Pause Flow Control Advertisement (auto-negotiation off only) SERDES Asymmetric Pause Flow Control Advertisement (auto-negotiation off only) * * * * GBIC Actions Return Status Byte Turn Auto-Negotiation ON Restart Auto-Negotiation Return Status Byte Turn Auto-Negotiation OFF Restart Auto-Negotiation Return Status Byte Clear Pause Flow Control Clear Asymmetric Pause Return Status Byte Set SERDES Pause Flow Control Bit Return Status Byte Set SERDES Asymmetric Pause Flow Control Bit Return Status Byte
133 ( 0x85 )
GBIC Status Byte
Bit 7 6 5 4 3 2 1 0 Description Reserved Reserved Reserved Copper has Advertised Asymmetric Pause Copper has Advertised Pause Host to Advertise Asymmetric Pause on Copper Host to Advertise Pause on Copper GBIC Auto Negotiation Status 1 = On / 0 = Off
ACTIVE PERFORMANCE SPECIFICATIONS
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
MIN -40 0 4.75 TYP MAX 85 70 5.25 350 55 UNITS C C Vdc mA mA NOTES
Module Specifications - Recommended Operating Conditions
PARAMETERS Storage Temperature Ambient Operating Temperature Supply Voltage Supply Current Surge Current GBIC Host Serial Interface (TX/RX) Data Input/Output Type Impedance (SERDES Interface) Transm itter (Input to GBIC) Input Voltage Receiver (Output to SERDES) Output Voltage Max Off Voltage Rise Time, 20%-80% Total Jitter Skew Link Dropout 74740-0001 Loss of Signal Tim ing 74740-0002, 74740-0003 RX_LOS assert delay RX_LOS negate delay t_loss_on t_loss_off 100 3 200 3.5 msec sec From detection of loss of signal to assertion of RX_LOS From detection of presence of signal to negation of RX_LOS 100 200 msec From detection of loss of signal to SERDES disable SYMBOL Tstg Ta V DDR, V DDT Icc Isurge
Vcc-ground Surge above steady state value
150
ohms
LVDS, AC coupled Differential
400
2400
mVpp
875 85
1525 170 350 192 175
mVpp mVpp ps ps ps
RELIABILITY PREDICTION REPORT
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
MTBF 3,231,693 5,598,828 7,643,711
Temperature: 75C
Assem bly Nam e 1000Base-T Adapter Active Components Passive Components Part Num ber 74740-xxxx Failure Rate 0.309435 0.178609 0.130827
IMPEDANCE MATCHING AND POWER SUPPLY FILTERING Signal inputs/outputs on the GBIC transceiver modules are AC coupled and internally terminated to 75 ohms (TD+, TD-, RD+, RD-). Each leg of the differential pair was equally matched in length. Figure 2 shows the recommended power supply filtering network.
Figure 2: Recommended Host Board Supply Filtering Network
VccT
0.1F
1.0H
VccR
0.1F
10F
1.0H
0.1F
10F 5V
GBIC Module
GBIC HOST CONNECTOR PIN DESCRIPTIONS
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
PIN PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9 PIN 10 PIN 11 PIN 12 PIN 13 PIN 14 PIN 15 PIN 16 PIN 17 PIN 18 PIN 19 PIN 20
NAME RX_LOS RGND RGND MOD_DEF(0) MOD_DEF(1) MOD_DEF(2) TX_DISABLE TGND TGND TX_FAULT RGND RX_DATA (-) RX_DATA (+) RGND V DDR V DDT TGND TX_DATA (+) TX_DATA (-) TGND
DESCRIPTION Receiver Loss of Signal, logic high, open collector compatible, 4.7 K to 10 K Ohm pull-up to V DDT on host. See part number chart for details. Receiver Ground Receiver Ground GBIC module definition and presence, 4.7 K to 10 K Ohm pull-up to V DDT on host Signal SCL (Clock) of the 2-w ire serial ID interface, 4.7 K to 10 K Ohm pull- up to V DDT on host, 100KHz maximum clock rate. Signal SDA (Data) of the 2-w ire serial ID interface, 4.7 K to 10 K Ohm pull- up to V DDT on host TX_DISABLE is not implemented. Transmitter Disable, logic high, open collector compatible, 4.7 K to 10 K Ohm pull-up to V DDT on GBIC. Transmitter Ground Transmitter Ground Transmitter Fault, logic high, open collector compatible, 4.7 K to 10 K Oh pull-up to V DDT on host. Not implemented on the RJ-45 GBIC Receiver Ground Receive Data, differential AC coupled Receive Data, differential AC coupled Receiver Ground Receiver Supply +5.0 Volts Transmitter Supply +5.0 Volts Transmitter Ground Transmit Data, differential AC coupled Transmit Data, differential AC coupled Transmitter Ground
1000BASE-T GBIC DIMENSIONS
1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver
High Performance Adapter Headquarters 101 Bringler Drive Maumelle, AE 72113 USA 501-851-4850 amerinfo@molex.com Order No. USA-206
Far East North Headquarters Yamato, Kanagawa, Japan 81-462-65-2324 feninfo@molex.com
Far East South Headquarters Jurong, Singapore 65-6-268-6868 fesinfo@molex.com
European Headquarters Munich, Germany 49-89-413092-0 eurinfo@molex.com
Corporate Headquarters 2222 Wellington Ct. Lisle, Illinois 60532 USA 630-969-4550
Printed in USA/0K/AJ/2003.10
(c)2003, Molex

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