View CRD4281-15_361801.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CRD4281-15
CrystalClearTM AC '97 2 Channel Low Cost PCI Audio Reference Design
Features
l
Description
The CRD4281-15 is a low cost PCI add-in board reference design that showcases Cirrus Logic's CS4281 audio controller and the CS4297A audio codec. The card features two channel 20-bit DACs, two channel 18-bit ADCs, an optional ZV port digital input, and a S/PDIF digital output. The CRD4281-15 reference design is available by ordering the CMK4281-15 manufacturing kit. Use this kit to help you develop high quality PCI add-in cards and PC motherboard audio designs. The CMK4281-15 includes a full set of schematic design files (OrCAD(R) 7.2 format), PCB job files (PADS(R) ASCII), PCB artwork files, and bill of materials. This design is production ready. It can also be easily modified to meet your specific requirements.
2 Channel Low Cost High Performance PCI Audio Accelerator add-in card l CS4281 PCI Audio Controller and CS4297A Audio Codec `97 l Complete suite of Analog I/O connections:
- Line, Mic, CD, and Aux Inputs - Line and Headphone Outputs
l S/PDIF
(IEC-958) digital output l ZV Port Input l Joystick/MIDI Interface l 2-layer low cost adapter board l Exceeds Microsoft's(R) PC 99 audio performance specifications. l Complies with the AC `97 version 2.1 specification
ORDERING INFO CMK4281-15 (Manufacturing Kit)
MIC IN LINE IN LINE OUT
PC BEEP CD IN AUX IN INT MODEM
ZV PORT HP OUT
CDR4281-15
SPDIF OUT
CS4297A
MIDI / JOYSTICK
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com
This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.
Copyright (c) Cirrus Logic, Inc. 2000 (All Rights Reserved)
JUN `00 DS308RD15A1 1
CRD4281-15
TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................4 2. SCHEMATIC DESCRIPTION ................................................................................4 2.1 Analog Inputs ..............................................................................................4 2.2 ZV Port Digital Input ....................................................................................5 2.3 Line Output .................................................................................................5 2.4 Headphone Output and Anti-Pop Circuitry .................................................5 2.5 CS4281 PCI Controller ...............................................................................5 2.6 CS4297A Audio Codec ..............................................................................5 2.7 Mic Pre-amp and Phantom Power ..............................................................5 2.8 MIDI and Joystick Connection ....................................................................5 2.9 S/PDIF Output ............................................................................................6 2.10 PCI Bus Connection .................................................................................6 2.11 Component Selection ...............................................................................6 2.12 EMI Components ......................................................................................6 3. GROUNDING AND LAYOUT ................................................................................7 3.1 Partitioned Voltage and Ground Planes .....................................................7 3.2 CS4297A Layout Notes ..............................................................................7 4. REFERENCES .......................................................................................................8 4.1 ADDENDUM ...............................................................................................8 5. BILL OF MATERIALS .........................................................................................27
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at: http://www.cirrus.com/corporate/contacts/
Microsoft , Windows 95, Windows 98 and Windows Millennium and WHQL is registered trademark of Microsoft. CrystalClear is a trademark of Cirrus Logic, Inc. Intel is a registered trademark of Intel Corporation. OrCAD is a registered trademark of OrCAD, Inc. PADS is a registered trademark of, PADS Software, Inc. Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product information describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at http://www.cirrus.com.
2
DS308RD15A1
CRD4281-15
LIST OF FIGURES
Figure 1. Block Diagram .................................................................................................... 9 Figure 2. Audio In ............................................................................................................ 10 Figure 3. ZV Port Digital Input and PC Beep Input .......................................................... 11 Figure 4. Line Out ............................................................................................................ 12 Figure 5. Headphone Output and Output Mute Circuit .................................................... 13 Figure 6. CS4281 PCI Audio Controller ........................................................................... 14 Figure 7. CS4297A Codec ...............................................................................................15 Figure 8. Microphone Input Circuit ..................................................................................16 Figure 9. MIDI and Joystick Control ................................................................................ 17 Figure 10. S/PDIF Consumer Digital Output ................................................................... 18 Figure 11. PCI Bus .......................................................................................................... 19 Figure 12. Power ............................................................................................................. 20 Figure 13. Top Assembly Drawing ..................................................................................21 Figure 14. Top Silkscreen ................................................................................................ 22 Figure 15. PCB Layout: Top Layer ..................................................................................23 Figure 16. PCB Layout: Bottom Layer ............................................................................. 24 Figure 17. Drill Drawing and Manufacturing Instructions ................................................. 25 Figure 18. Bracket Drawing ............................................................................................. 26
DS308RD15A1
3
CRD4281-15
1. GENERAL INFORMATION
The CRD4281-15 is a PCI add-in card that features the CS4281 PCI audio controller and the CS4297A AC-97 audio codec. The CRD4281-15 is a low cost board with a rich feature set and industry leading audio performance. In order to maintain high audio quality, careful consideration has been given to component selection and PC layout. The CS4297A is a mixed-signal serial audio codec based on the Intel AC `97 2.1 specification. The CS4297A features a 20-bit stereo DAC, an 18-bit stereo ADC, a digital S/PDIF output, and a very flexible analog audio mixer. The CS4297A has four line-level stereo inputs, two mono line-level inputs, two switchable microphone inputs, and a stereo pseudo-differential CD input. The input signals can be routed to the ADC for recording, or mixed together for recording and direct playback. The CS4297A has 64 registers that are used to control its various features such as volume levels, mutes and signal routing. The CS4297A maintains high audio quality throughout its signal chain and exceeds the Microsoft PC-99 audio performance specification. The CS4281 controller streams digital audio data and MIDI over the PCI bus. It also performs hardware-controlled signal processing and sample rate conversion. The CS4281 features several peripheral interfaces including MIDI output, joystick and game controller input, hardware volume control and several General Purpose I/Os. The CS4297A and the CS4281 communicate through a 5-wire serial digital interface known as the AC-Link. The AC-Link is used to transfer digital audio between the two devices. Its is also used to send commands from the CS4281 to the CS4297A's registers. For more information on the AC-Link, see the AC'97 version 2.1 specification.
2. SCHEMATIC DESCRIPTION
The block diagram in Figure 1 illustrates the interconnections between the schematic pages. The following are descriptions of the other pages contained in the schematics.
2.1
Analog Inputs
The inputs for AUX, CD, and LINE shown in Figure 2 are attenuated 6dB by a voltage dividers. This allows for input levels up to 2 Vrms. Each of these inputs has 220 pF EMI suppression capacitors. These may be removed if EMC testing determines they are not required. The CS4297A analog inputs and outputs need to be AC coupled because of internal bias voltages. 10 uF AC coupling capacitors are used on the Line, CD, Aux, and Internal Modem inputs to minimize low frequency roll-off. The CS4297A CD input is pseudo-differential. The CD signal acts as one side of the differential input and CD_COM as the other. CD_COM is a common return path for both the left and right channels. For good common mode rejection performance, the voltage divider resistors for CD_COM have been set to half the value of those for CD L and R inputs. There are provisions for two types of analog audio CD connectors. J1 is for the standard ATAPI connector and J2 is for the legacy 2 mm Mitsumi connector. You can install only one of the two connectors because the footprints of J1 and J2 are placed on top of each other. The CRD4281-15 has circuitry to accommodate the audio from a modem. The modem connection uses the CS4297A's MONO_OUT and PHONE_IN. The MONO_OUT circuit has a voltage divider that can be adjusted to accommodate small output levels.
4
DS308RD15A1
CRD4281-15
2.2 ZV Port Digital Input
All unused inputs and bi-directional pins on the CS4281 are tied to their respective inactive levels through a 10 k resistor.
The ZV port in Figure 3, accepts PCM audio data in I2S serial format and routes it to the CS4334 DAC. The analog output of this DAC is connected to the VIDEO_IN audio inputs of the CS4297A.
2.6
CS4297A Audio Codec
2.3
Line Output
The LINE_OUT circuit in Figure 4 consists of a Motorola MC1458 dual op-amp. This device is capable of driving high impedance line level signals, such as powered speakers, and stereo headphones with impedances greater than 32 . This circuit has a gain of 6 dB. The output of the op-amp is connected to an anti-pop circuit that is described in Figure 5. This anti-pop circuit suppresses poweron transient pops.
The audio codec is shown in Figure 7. All analog inputs are sent to the codec from the circuitry in Figure 2 (Audio In) and Figure 8 (Microphone In). All of these signals are AC coupled. Unused analog input should be tied to Vref (pin 28) or AC coupled to ground through a capacitor to prevent noise. Mic 2 is the only unused input on the CRD4281-15 and is tied directly to Vref. The CS4297A generates two AC-Link signals, BITCLK and SDATA_IN. Both outputs have a 47 series termination resistor to prevent reflections on the AC-Link.
2.4
Headphone Output and Anti-Pop Circuitry
2.7
Mic Pre-amp and Phantom Power
The headphone output circuit in Figure 5 consists of a Motorola MC1458 dual op-amp connected to the ALT_LINE_OUT of the CS4297A. The MC1458 circuit has a gain of 6 dB and is capable of driving stereo headphones with impedances greater than 32 . The headphone output is connected to an anti-pop circuit. During power up, transistors Q5-Q8 in the anti-pop circuit suppress power-on transients by temporarily muting the audio output.
The microphone pre-amp in figure 8 uses a Motorola MC33078D low noise dual op-amp. One of the op-amps provides 18 dB gain stage for the microphone. The other op-amp buffers the phantom power supply for the mic. The phantom power is derived from the +5 V analog supply and buffered by U10A to provide a maximum of +4.2 V with no load and a minimum of +2.0 V under a 0.8 mA load, as required by PC 99. The microphone circuit also has 3 dB rolloffs at 60 Hz and 15 kHz as specified in PC-99.
2.5
CS4281 PCI Controller
The CS4281, in Figure 6, has 0.1 F decoupling capacitors connected to each of its power pins. All of these capacitors are located physically close to the device. L3, C56, and C57 are used to filter the power supply for the internal PLL circuit. The AC-Link requires series termination resistors to prevent reflections. The resistors are placed as close as possible to device originating the signal. The CS4281 generates SYNC and SDATA_OUT and each has a 47 ohm series termination resistor, R19 and R20.
DS308RD15A1
2.8
MIDI and Joystick Connection
The MIDIOUT buffer driver circuit in Figure 9 is used to provide +5 V TTL compatible output on the DB-15 connector. This circuit can be removed, and R37 populated to bypass the buffer circuit if a +3.3 V compatible output is sufficient. L4, C72, C77, C78, C79 are provided for EMI suppression and can be removed if EMC testing shows they are not required. In this case, replace L4 with a 0 resistor. C73 - C76 and C80 - C83 are required for the
5
CRD4281-15
joystick circuitry to be functional and must not be removed. C29 and C30, and supplies power to the headphone circuit. The Micrel MIC2920A low dropout regulator is provides the required +3.3 V to the CS4281 in the absence of +3.3 V on the PCI bus. Two packaging options are supported. U8 is a SOT-223 surface mount package, and U9 is a TO-220 through hole package. 0 resistors are provided as a build option if +3.3 V is guaranteed to be available on the PCI bus.
2.9
S/PDIF Output
The S/PDIF (IEC-958) digital output, in Figure 10, is compatible with digital inputs on consumer devices such as consumer stereo receivers and MiniDisk recorders. The CS4297A S/PDIF output is coupled to J16 through an isolation transformer. This design uses a low cost industry standard device, the PE65612 by Pulse Engineering. The S/PDIF and DAC outputs are derived from the same 48 KHz PCM signal. This means that whatever digitally effects LINE_OUT, such as sample rate conversion, also effects the S/PDIF output.
2.11
Component Selection
2.10
PCI Bus Connection
Great attention was given to the particular components used on the CRD4281-15 board with cost, performance, and package selection as the most important factors. Listed are some of the guidelines used in the selection of components: * * * * No components smaller than 0805 package. Only single package components; no resistor packs. 8-pin devices are in surface mount packages. Dual footprint for the 24.576 MHz. crystal. Standard H49S, and small circular CA-301 through hole package. Dual footprint for +5 V and +3.3 V regulators. Surface mount and through hole packages are supported.
The PCI 2.1 specification requires that each unused +3.3 V power pin should be connected with an average of 0.01 F capacitor. In Figure 11, seven 0.1 F capacitors in parallel provide the required capacitance for the +3.3 V power pins.
Power Supplies
The CS4297A requires both a digital +3.3 V and an analog +5 V supply. The digital power is supplied from the PCI bus. A separate regulator is recommended for the analog voltage supply to provide good audio signal quality. In Figure 12, a Motorola MC78M05 regulates the +12 V supply from the PCI bus down to a clean +5 V analog supply. For the best audio performance, the analog voltage regulator, should be located near the CS4297A. Optionally, U3, a 78L05, can be used in applications where LINE_OUT and ALT_LINE_OUT are only going to drive high impedance loads (10 K or greater). The -12 V power pin is decoupled through
*
2.12
EMI Components
A number of capacitors and inductors are included to help the board meet EMI compliance tests, such as FCC Part 15. Modifying this selection of components without EMC testing could result in EMC compliance failure.
6
DS308RD15A1
CRD4281-15
3. GROUNDING AND LAYOUT
The component layout and signal routing of the CRD4281-15 provides a good model for laying out your own PCI add-in card. PCI-bus based add-in cards have explicit requirements on trace lengths that are not imposed on motherboard designs. These trace length limits for add-in cards are as follows: * * * * Maximum trace length for 32-bit signals on 32bit and 64-bit cards is 1.5 inches. Maximum trace lengths for signals on the 64bit extension are 2 inches. Trace length for the PCI CLK signal is 2.5 inches 0.1 inch. The PCI CLK signal must drive only one load. pins are arranged on the CS4297A so that the analog and digital signals are separated from each other. The analog and digital ground planes must be tied together for the codec to maintain proper voltage references. For best results, the two ground planes are tied together with a single wide trace under the codec near its digital ground pins. Data converters are generally susceptible to noise on the crystal pins. In order reduce noise from coupling onto these pins, the area around the crystal and its signal traces is filled with copper on the top and bottom of the PCB and attached to digital ground. A separate chassis ground provides a reference plane for all of the EMI suppression components. The chassis ground plane is connected to the analog ground plane at the external jacks.
Please refer to the PCI 2.1 Specification , Section 4.3.6, for information on routing PCI bus signals on a motherboard.
3.2
CS4297A Layout Notes
3.1
Partitioned Voltage and Ground Planes
The CRD4281-15 is partitioned into separate digital and analog sections to prevent digital noise from affecting the performance of the analog circuits. The analog section is completely isolated from the digital section. The analog and digital sections each have their own separate ground plane. All analog components, power traces and signal traces lie over the analog ground plane. Digital components, power traces and signal traces are not allowed to crossover into the analog section. The CS4297A is placed at the transition point between the analog and digital ground planes. The
Refer to the CS4297A Data Sheet for partitioning and bypass capacitors placement. Pay close attention to bypass capacitors on REFFLT, AFLT1, AFLT2 and the power supply capacitors.
DS308RD15A1
7
CRD4281-15
4. REFERENCES
1) Intel, Audio Codec `97 Component Specification, Revision 2.1, May 22, 1998. http://developer.intel.com/pc-supp/platform/ac97/ 2) PCI Special Interest Group, PCI Local Bus Specification, Revision 2.1, June 1, 1995. http://www.pcisig.com/ 3) Cirrus Logic, CS4281 PCI Audio Interface Data Sheet http://www.cirrus.com/products/overviews/cs4281.html 4) Cirrus Logic, CS4297A SoundFusion Audio Codec `97 Data Sheet http://www.cirrus.com/products/overviews/CS4297A.html 5) Steve Harris, Clif Sanchez, Personal Computer Audio Quality Measurements, Ver 1.0 http://www.cirrus.com/products/papers/meas/meas.html 6) Microsoft, PC Design Guidelines, http://www.microsoft.com/hwdev/desguid/ 7) M. Montrose. Printed Circuit Board Design Techniques for EMC Compliance, IEEE Press, New York: 1996.
4.1
* * * *
ADDENDUM
Schematic drawings Layout drawings Bracket drawings Bill of materials
8
DS308RD15A1
CRD4281-15
MIC IN
MIC1
CS4297A
MIC1
Power AUDIO IN
LINE_INR LINE_INL CD_INR CD_INL CD_COM AUX_R AUX_L ZV_R ZV_L PHONE_IN MONO_OUT PCBEEP LINE_INR LINE_INL CD_INR CD_INL CD_COM AUX_R AUX_L ZV_R ZV_L ABITCLK ASDIN ASDOUT PHONE_IN MONO_OUT PCBEEP SPDIF_TX
AUDIO OUT
ALT_LINE_OUTL ALT_LINE_OUTR LINE_OUTL LINE_OUTR
ALT_LINE_OUTL ALT_LINE_OUTR LINE_OUTL LINE_OUTR
Off Board Digital
SPDIF_TX
CS4281
ASYNC ARST# PAR STOP# TRDY# FRAME# INTA# IRDY# ABITCLK ASDIN ASDOUT
C/BE[3..0]# AD[31..0]
MIDIOUT MIDIIN JBB2 JBB1 JBCY JBCX JAB2 JAB1 JACY JACX
MIDIOUT MIDIIN JBB2 JBB1 JBCY JBCX JAB2 JAB1 JACY JACX
PCI_BUS
PAR STOP# TRDY# FRAME# INTA# IRDY#
Figure 1. Block Diagram
DS308RD15A1
DEVSEL# PERR# IDSEL REQ# CLK GNT# RST# C/BE[3..0]# AD[31..0]
DEVSEL# PERR# IDSEL REQ# CLK GNT# RST# C/BE[3..0]# AD[31..0]
ASYNC ARST#
9
MITSUMI
10
C7 10uF ELEC
Line In
J3 4 3 5 2 1 C9 220pF NPO Connect CGND to AGND at the jack AGND
AGND
R45 R46 R47 R49 C10 220pF NPO
6.8K
+
LINE_INR
6.8K 6.8K 6.8K LINE_INL
+
AUX IN
J4
R G G L
C8 10uF ELEC
C11 10uF ELEC R48 6.8K
+
AUX_R
4 3 2 1
AGND AGND
R50
6.8K
R51 4X1HDR-SN/PB R52
CGND
6.8K 6.8K
C12 10uF ELEC AUX_L
+
C1 10uF ELEC R53 DO NOT POPULATE J2 6.8K
+
C13 220pF NPO
C14 220pF NPO
CDROM IN
AGND
CD_INR
AGND
R54
6.8K
J2 1 2 3 4
R GND L GND R G G L
J1 4 3 2 1
R55 3.4K
C2 10uF ELEC CD_COM
+
R57
3.4K
B4B-PH-K
4X1HDR-SN/PB R61 C4 C5 C6 R62 6.8K 6.8K
C3 10uF ELEC
+
CD_INL 220pF 220pF 220pF NPO NPO NPO
AGND
AGND
INTERNAL MODEM
R34 TO MODEM
Out G G In
27K
C99 10uF ELEC MONO_OUT
+
J11 4 3 2 1
AGND
R35
47K
AGND
4X1HDR-SN/PB FROM MODEM R36 C101 220pF NPO C102 220pF NPO 47K
C100 10uF ELEC PHONE_IN
+
CRD4281-15
AGND
AGND
DS308RD15A1
Figure 2. Audio In
DS308RD15A1 11
ZVPORT Digital Input (I2 S)
J6
R G G L
Do Not Populate
+3.3VD +5VA
C123 R86 4 3 2 1 ZSDATA ZLRCLK ZSCLK 100K U11 1 2 3 4 SDATA AOUTL DEM/SCLK VA+ LRCK AGND MCLK AOUTR CS4334
AGND AGND
.1uF
R87 560
C124 ZV_L 1.0uF
4X1HDR-SN/PB
8 7 6 5
C125 2200pF COG
AGND
DGND
R88 560
C126 ZV_R 1.0uF
C127 2200pF COG
AGND
PC BEEP
J15 1X2 HDR 2 1 R91 390
R89 47K C129 680pF X7R
C128 0.1uF R90 47K PCBEEP
CRD4281-15
Figure 3. ZV Port Digital Input and PC Beep Input
C34 LINE_OUTR 1
+
10UF
AGND
22pF C28 NPO R10 56K
8
C36 LINE_OUTL 1
+
10UF
AGND
8
+
5
-
2
R11 27K
6
4
+
3
-
2
R9 27K
4
12
22pF C25 NPO R8 56K
-12VA
MUTE_LINE_R MUTE_LINE_L
2
1
+12VA
LINE OUT
U1A MC1458 R5 220K R6 220K C26 220pF NPO C27 220pF NPO
AGND
4 3 5 2 1 J8 Connect CGND to AGND at the jack
-12VA AGND CGND
7
+12VA
U1B MC1458
CRD4281-15
DS308RD15A1
Figure 4. Line Out
CRD4281-15
C130 R92
22pF NPO 56K
-12VA
C131 ALT_LINE_OUTR 1
+
10UF
AGND
8
C132 R94
C135 ALT_LINE_OUTL 1
+
10UF VIN(max) = 1 Vrms
AGND
ATTN. BY -10.75 dB V = .29 Vrms
ANTI-POP CIRCUIT
+12VA
8
3
D1 1
MMBD7000LT1 2 2 Q4 3 R98 2.2K 1 R101 2.2K 1
3
MMBT3906ALT1
2
10K 1
+
10K 1
+
1
3
R99
R100
C136 10UF 2 2
C137 10UF
2
R102 2.2K
1
3
AGND
AGND
2
R103 2.2K
1
3
AGND
Figure 5. Headphone Output and Output Mute Circuit
DS308RD15A1
2
+
5
-
2
R97
27K
6
4
+
3
-
2
R93
27K
2
HEADPHONE OUT
1
+12VA
4
U12A MC1458
4 3 5 2 1 J14
22pF NPO 56K
-12VA
R95 220K
R96 220K
C133 220pF NPO
C134 220pF NPO
AGND
Connect CGND to AGND at the jack
AGND
7
+12VA
CGND
U12B MC1458
MUTE_LINE_R MUTE_LINE_L
Q5
MMBT3904LT1
Q6
MMBT3904LT1
Q7
MMBT3904LT1
Q8 MMBT3904LT1
13
14
ABITCLK ASDOUT ASDIN ASYNC ARST#
+3.3VD DGND +3.3VD
U6 R19 R20 47 47 74 75 76 77 78 56 57 58 59 52 54 55 53 60 63 66 94 70 71 79 80 51 64 81 82 83 84 85 15 16 17 20 23 24 26 99 67 93 25 19 18 68 12 61 86 100 8 21 31 39 50 73
+5V_PCI
CS4281
48 47 46 45 44 43 42 41 37 36 35 34 33 32 29 28 11 10 9 6 5 4 3 2 97 96 95 92 91 90 89 88 38 27 14 98 69 72
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 AD16 AD17 AD18 AD19 AD20 AD21 AD22 AD23 AD24 AD25 AD26 AD27 AD28 AD29 AD30 AD31
AD[31..0]
AD[31..0]
U7 1 2 3 4 nc1 nc2 nc3 Vss Vcc nc4 SCL SDA 8 7 6 5
R21 4.7K
JAB1 JAB2 JBB1 JBB2 JACX JBCX R63 JBCY 10K JACY MIDIIN MIDIOUT VOLUP VOLDN
24LC00 INTA# RST# CLK GNT# REQ# FRAME# IRDY# TRDY# DEVSEL# STOP# PERR# PAR IDSEL PIN 39 C61 0.1uF X7R PIN 39
DGND +3.3VD
Backwards compatible connections for CS4614/B
DGND
DGND DGND
CS4281 PCIVDD PINS +3.3VD +3.3VD +3.3VD +3.3VD
PIN 8 C58 0.1uF X7R PIN 8
DGND +3.3VD DGND
PIN 21 C59 0.1uF X7R PIN 21
PIN 31 C60 0.1uF X7R PIN 31
DGND +3.3VD
AD00 AD01 AD02 AD03 AD04 AD05 MQFP JAB1 AD06 AD07 JAB2 JBB1 AD08 AD09 JBB2 JACX AD10 JBCX AD11 JBCY AD12 JACY AD13 AD14 MIDIIN AD15 MIDIOUT ASDIN2/GPIO1 AD16 GPIO3 AD17 VOLUP AD18 VOLDN AD19 EECLK/GPOUT/PCREQ# AD20 EEDAT/GPIO2/PCGNT# AD21 TEST AD22 TESTSEL AD23 AD24 INTA AD25 AD26 RST AD27 PCICLK AD28 PCI_GNT AD29 PCI_REQ AD30 FRAME AD31 IRDY TRDY CBEO DEVSEL STOP CBE1 CBE2 PERR CBE3 PAR IDSEL PME# CLKRUN# CRYVDD CRYGND IRQA IRQB IRQC ABITCLK ASDOUT ASDIN ASYNC ARST 3.3VAUX CVDD1 CVDD2 PCIVDD0 PCIVDD2 PCIVDD3 PCIVDD4 PCIVDD5 PCIVDD6 PCIVDD7 VDD5REF
+3.3VD
C/BE[3..0]#
C/BE[3..0]#
+3.3VD
C/BE0 C/BE1 C/BE2 C/BE3
L3 120@100MHz
C56 1000pF NPO 13 62 65 87 1 7 22 30 40 49
C57 0.1uF X7R
+3.3VD DGND
CGND1 CGND2 CGND3 PCIGND0 PCIGND2 PCIGND3 PCIGND4 PCIGND5 PCIGND6 PCIGND7
DGND
+3.3VD
PIN 50 C66 0.1uF X7R
DGND DGND
PIN 86 C67 0.1uF X7R
PIN 100 C69 0.1uF X7R
DGND DGND
C116 0.1uF X7R
DGND CS4281 CVDD PINS +3.3VD +3.3VD +3.3VD +3.3VD
PIN 12 C62 0.1uF X7R
DGND DGND
C64 0.1uF X7R
PIN 61 C117 0.1uF X7R
DGND DGND
C65 0.1uF X7R R76
DGND
C118 0.1uF X7R J12
U G G D
Do not populate R76 & R77 R77 for Cs4281
CS4281 3.3VAUX PIN +3.3VD
Hardware Volume Control
4 3 2 1
4.7K
4.7K R64 R65 100 VOLUP 100 VOLDN
PIN 68 C70 0.1uF X7R PIN 67
DGND
4X1HDR-SN/PB C104 100pF
COG
C105 100pF
COG
CRD4281-15
DGND
DGND
DS308RD15A1
Figure 6. CS4281 PCI Audio Controller
DS308RD15A1
DUAL FOOTPRINT LAYOUT FOR XTAL. layout Y1 on top of Y2 -- populate only one XTAL
+3.3VD
U5
+5VA
CS4297A
AGND
Y1 24.576 MHz Y2 C45 22pF NPO
DGND
25 38 1 9 2 3 R17 47 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 27 28 29 30
AVdd1 AVdd2 DVdd1 DVdd2 XTL_IN XTL_OUT SDATA_IN SYNC RESET# PC_BEEP PHONE AUX_L AUX_R VIDEO_L VIDEO_R CD_L CD_GND CD_R MIC1 MIC2 LINE_IN_L LINE_IN_R REFFLT Vrefout AFLT1 AFLT2
26 AVss1 42 AVss2 4 DVss1 7 DVss2
DGND
AGND
C47 C48 C103 680pF 680pF 680pF NPO NPO NPO C138 680pF NPO 47 C139 680pF NPO ABITCLK ASDOUT LINE_OUTL LINE_OUTR MONO_OUT ALT_LINE_OUTL ALT_LINE_OUTR
24.576 MHz
TIE UNUSED ANALOG INPUTS TO VREF. PCBEEP
C46 22pF NPO ASDIN ASYNC ARST# DGND PHONE_IN AUX_L AUX_R
ZV_L ZV_R R105 0 0 R106 R104 No Pop CD_INL CD_COM CD_INR MIC1 LINE_INL LINE_INR
C49 0.1uF X7R
C50 1.0uF
C51 1.0uF
C52 0.1uF X7R
C53 1000pF NPO
6 BIT_CLK 5 SDATA_OUT 35 LINE_OUT_L 36 LINE_OUT_R 37 MONO_OUT 39 ALT_LINE_OUT_L 41 ALT_LINE_OUT_R 31 BCFG 32 FLT3D 33 FLTI 34 FLTO 40 nc5 43 nc6 44 nc7 45 ID0# 46 ID1# 47 EAPD 48 S/PDIF_OUT
R18
R66
0
Do not populate R66.
C106 X7R 0.01uF Do not populate C107,
NPO
C107 1000pF
AGND
C106 for CS4297.
SPDIF_TX
SPDIF_TX
C54 1000pF NPO
AGND
CRD4281-15
Figure 7. CS4297A Codec
15
8
-
+
R69
+5VA
1
4
AGND
place close to pins 8 and 4
C114 0.1uF X7R R71 100K
AGND AGND
2
8
1
+
0
C113 10UF
AGND
AGND
2
C115
CGND AGND
AGND
NPO R75 47K
4
16
For Microphone Circuit without Op Amp
1) Do not populate U10, R68, R69, R70, R71, R72, R74, R75, C113, C114 and C115. 2) 3) Populate R79, R80 and C119 Populate: 2.2K for R73
+5VA
Do not populate R79 for Pre Amp Mic Circuit R79 0
+5VA
R68 47K U10A
+
100 ohm for C109 (fits on the same pad) 0.1uF for C110 2.5K for R68 1
MC33078D 3 2
C108 10UF
R70 47K
68K
AGND
R72 47K
AGND
J5
4 3 5 2 1
R73 2.7K
+5VA
C109 0.068 uF X7R R74 6.8K 5+ 6-
U10B MC33078D 7 C110 1uF MIC1 X7R
Connect CGND to the jack
C111 NPO 220pF
C112 NPO 220pF
Do not populate R80 & C119 for Pre Amp Mic Circuit
C119 0.1uF X7R
R80
220pF
CRD4281-15
DS308RD15A1
Figure 8. Microphone Input Circuit
C80 12000pF X7R
C83 12000pF X7R
C74 1000pF NPO
C75 1000pF NPO
C73 1000pF NPO
C76 1000pF NPO
C77 100pF
COG
C78 100pF
COG
C79 0.1uF X7R
DGND CGND CGND
R37
100
H2
F
H3
F
H4
F
H5
populate instead of MIDI out buffer as necessary
FIDUCIAL FIDUCIAL FIDUCIAL TOOLHOLE
+3.3VD +5V_PCI
R38
39K 2
R40
39K
1
Q1
MMBT2907ALT1 R39 3 5.6K R41 10K 1 Place Near Inky 3 Q2 MMBT3904LT1 R42 20K 2
17
DS308RD15A1 17
+5V_PCI
+5V_PCI
L4 31@100MHz C72 0.1uF X7R 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 J10 DB15
4.7K
4.7K
4.7K
4.7K
47K
JAB1 JBB2 JBB1 JAB2 C82 12000pF X7R MIDIIN C81 12000pF X7R
MIDIOUT
16
JACX JBCX JBCY JACY
R30 R32 R33 R31
2.2K 2.2K 2.2K 2.2K
R25
R26
R24
R27
R23
Populate R23 for CS4280
CRD4281-15
DGND
DGND
optional MIDI out buffer -- populate as necessary
Figure 9. MIDI and Joystick Control
R107 90.9 1%
2
4 PE65612
DGND
DGND
2
18
R85 SPDIF_TX T1 374 1% 1 3 1
SPDIF (IEC-958) Consumer Digital Output Transformer Isolated
J16 ARJ-2018-1
RCA Jack
CRD4281-15
DS308RD15A1
Figure 10. S/PDIF Consumer Digital Output
CRD4281-15
+12VD +5V_PCI +3.3V_PCI
+3.3V_PCI
+5V_PCI
-12VD
PCI Bus +3.3V supply. Place near PCI edge connector +3.3V_PCI P2
P1
PCI BUS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
+
Side A
1
TRST# +12V TMS TDI +5V(1) INTA# INTC# +5V(2) RSVD(1) +5V(3) RSVD(2) GND(1) GND(2) RSVD(3) RST# +5V(4) GNT# GND(3) PME# AD[30] +3.3V(1) AD[28] AD[26] GND(4) AD[24] IDSEL +3.3V(2) AD[22] AD[20] GND(5) AD[18] AD[16] +3.3V(3) FRAME# GND(6) TRDY# GND(7) STOP# +3.3V(4) SDONE SBO# GND(8) PAR AD[15] +3.3V(5) AD[13] AD[11] GND(9) AD[9] KEY1 KEY2 C/BE[0]# +3.3V(6) AD[6] AD[4] GND(10) AD[2] AD[0] +5V(5) REQ64# +5V(6) +5V(7)
INTA# PCI Bus +5V_PCI Side B near pin 1 C/BE[3..0]# RST# GNT#
AD30 AD28 AD26 AD24 AD31 AD29 AD27 AD25
+
C84 10UF
C85 0.1uF X7R
C/BE[3..0]#
DGND
CLK REQ#
C/BE3
IDSEL
AD22 AD20 AD18 AD16
AD23 AD21 AD19 AD17 C/BE2
FRAME# IRDY# TRDY# DEVSEL# STOP# PERR# PAR
AD15 AD14 AD13 AD11 AD9 AD12 AD10 C/BE1
C/BE0 AD6 AD4 AD[31..0] AD2 AD0
AD8 AD7 AD5 AD3 AD1
AD[31..0]
-12V TCK GND11 TDO +5V(8) +5V(9) INTB# INTD# PRSNT1# RSVD(4) PRSNT2# GND(12) GND(13) RSVD(5) GND(14) CLK GND(15) REQ# +5V(10) AD[31] AD[29] GND(16) AD[27] AD[25] +3.3V(7) C/BE[3]# AD[23] GND(17) AD[21] AD[19] +3.3V(8) AD[17] C/BE[2]# GND(18) IRDY# +3.3V(9) DEVSEL# GND(19) LOCK# PERR# +3.3V(10) SERR# +3.3V(11) C/BE[1]# AD[14] GND(20) AD[12] AD[10] GND(21) KEY3 KEY4 AD[8] AD[7] +3.3V(12) AD[5] AD[3] GND(22) AD[1] +5V(11) ACK64# +5V(12) +5V(13)
Side B
C86 0.1uF X7R
C87 0.1uF X7R
C98 0.1uF X7R
1
DGND
PRSNT2#, PRSNT1# = 00 Power Requirement = 7.5W max
2
+3.3V_PCI
+3.3VD
R43 R44
No Pop No Pop
POPULATE 0 OHM RESISTORS ONLY IF 3.3V IS AVAILABLE ON PCI BUS AND 3.3V REGULATOR IS NOT REQUIRED
+3.3V_PCI
C94 0.1uF X7R
C95 0.1uF X7R
C96 0.1uF X7R
C97 0.1uF X7R
DGND
Unused PCI Bus +3.3V supply. Place near PCI edge connector
PCI BUS 5V A
C93 0.1uF X7R 2
C92 10UF
PCI BUS 5V B
DGND DGND
Connect AGND to DGND with a 50 mil trace near the CS4297 Connect CGND to DGND with a 50 mil trace near the finger edge of the board.
Figure 11. PCI Bus
DS308RD15A1
19
PIN IN HOLE POPULATION OPTION 2 GND
AGND +12VD DGND +12VA
L2 31@100MHz 3 GND OUT U3 IN U8
2
4
SURFACE MOUNT POPULATION OPTION
+
2 C33 0.1uF X7R
+
1 IN 1
+
OUT C91 0.1uF X7R 2 C89 10UF
3
C31 10uF ELEC
MC78L05AC
1
1
GND NC
C88 10UF 2
C90 0.1uF X7R
2
AGND -12VA -12VD
DGND
MIC2920A,400ma,SOT223 31@100MHz C29
L1
5 VA Power 1) CS4297A = 35 mA 2) CS4334 = 15mA
U8 OR U9 IS NOT REQUIRED IF 3.3V IS AVAILABLE ON THE PCI BUS. IF REMOVED, STUFF 0 OHM RESISTORS AS SHOWN ON PAGE 8. CONTINUE TO POPULATE C88 - C91.
AGND
Connect AGND to DGND with a 50 mil trace near the CS4297A Connect CGND to DGND with a 50 mil trace near the finger edge of the board.
CRD4281-15
DS308RD15A1
Figure 12. Power
+
10uF ELEC
C30 0.1uF X7R
2
20
+5VA
U2 MIC2920A,400ma,TO220 1
+3.3VD
IN GND MC78M05ACDT
OUT
3
+5V_PCI
U9 1 IN OUT 3
SURFACE MOUNT POPULATION OPTION
1
PIN IN HOLE POPULATION OPTION C32 10UF
+
CRD4281-15
Figure 13. Top Assembly Drawing
DS308RD15A1
21
CRD4281-15
Figure 14. Top Silkscreen
22
DS308RD15A1
CRD4281-15
Figure 15. PCB Layout: Top Layer
DS308RD15A1
23
CRD4281-15
Figure 16. PCB Layout: Bottom Layer
24
DS308RD15A1
CRD4281-15
Figure 17. Drill Drawing and Manufacturing Instructions
DS308RD15A1
25
26
CRD4281-15
DS308RD15A1
Figure 18. Bracket Drawing
27
Package PTH 5MM Manf. PANASONIC Part Number ECE-A16Z10 CSN_0805 KEMET C0805C221J5GAC CSN_0805 CSN_0805 KEMET KEMET C0805C220J5GAC C0805C104K5RAC Reference C1,C2,C3,C7,C8,C11,C12, C99,C100,C29,C31 C32,C34,C36,C40,C84,C88, C89,C92,C108,C113, C131,C135,C136,C137 C4,C5,C6,C9,C10,C13,C14, C26,C27,C101,C102,C111,C112,C115,C 133,C134 C25,C28,C45,C46,C130,C132 C30,C33,C41,C42,C43,C44, C49,C52,C57,C58,C59,C60, C61,C62,C64,C65,C66,C67, C69,C70,C72,C79,C85,C86, C87,C90,C91,C93,C94,C95, C96,C97,C98,C114,C116, C117,C118,C119,C128 C50,C51 CSN_1206 CSN_0805 CSN_0805 CSN_0805 CSN_0805 CSN_0805 CSN_0805 CSN_1206 CON_MLX_70553_4 AJ-356 PTH-2 DB15-HF PTH IND_FB1206 IND_FB1812 SOT23 SOT23 SOT23 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 MURATA C47,C48,C103,C129,C138,C139 C53,C54,C56,C73,C74,C75, C76,C107 C77,C78,C104,C105 C80,C81,C82,C83 C109 C106 C110 J1,J4,J11,J12 J3,J5,J14,J8 J15 J10 J16 GRM426Y5V105Z25BL KEMET C0805C681K5GAC KEMET C0805C102K5GAC KEMET C0805C101J5GAC KEMET C0805C123K5RAC KEMET C0805C683K5RAC KEMET C0805C103K5RAC VENKEL C1206X7R500105KNE MOLEX 70553-0003 A/D ELECTRON- AJ-3056A-5P ICS Samtek TSW-102-07-G-S AMP 747845-3 ARJ-2018-1 HF50ACB321611-T HF30ACB453215-T MMBD7000LT1 MMBT3904LT1 MMBT3906LT1 9C08052A224J 9C08052A5602J 9C08052A2702J 9C08052A4702J PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS 9C08052A47R0J 9C08052A4701J 9C08052A2201J 9C08052A1000J 9C08052A1002J A/D ELECTRONICS TDK TDK NATIONAL NATIONAL NATIONAL PHILIPS PHILIPS PHILIPS PHILIPS L1,L2,L4 L3 D1 Q5,Q6,Q7,Q8 Q4 R5,R6,R95,R96 R8,R10,R92,R94 R9,R11,R34,R93,R97 R23,R35,R36,R68, R70,R72,R75,R89,R90 R17,R18,R19,R20 R21,R24,R25,R26,R27 R30,R31,R32,R33 R98,R101,R102,R103 R37,R64,R65 R63,R99,R100
5. BILL OF MATERIALS
Item 1
Qty 25
Description CAP,ELEC,10UF,TH,CASE A,20%,16V
2
16
CAP, 0805, C0G, 220pF, 5%, 50V
3 4
6 39
CAP, 0805, C0G, 22pF, 5%, 50V CAP, 0805, X7R, .1uF, 10%, 50V
5
2
CAP,1.0UF,SO,1206,+80/-20%,25V,Y5V
6 7 8 9 10 11 12
6 8 4 4 1 1 1
CAP, 0805, C0G, 680pF, 10%, 50V CAP, 0805, C0G, 1000pF, 10%, 50V CAP, 0805, COG, 100pF, 5%, 50V CAP, 0805, X7R, 12000pF, 10%, 50V CAP, 0805, X7R, 68000pF, 10%, 50V CERM CAP, .01uF, 10%, 50V,X7R CAP, 1206, X7R, 1uF, 10%, 25V
13 14
4 4
HDR, 4X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB 1/8" PHONO JACK
15
1
16
1
CONN, 15D SHELL, FEMALE, RT ANGLE PC MOUNT
1
17 18 19 20 21 22 23 24 25
3 1 1 4 1 4 4 5 9
IND, FBEAD, 1206, 31@100MHz, 25% IND, FBEAD, 1812, 120@100MHz, 25% DIODE, DUAL, SOT23 TRAN, SO, NPN, SOT23 TRAN, SO, PNP, SOT23 RES,220K,SO,0805,5%,1/10,METAL FILM RES, SO, 0805, 56K, 5%, 1/10W, METAL FILM RES, SO, 0805, 27K, 5%, 1/10W, METAL FILM RES, SO, 0805, 47K, 5%, 1/10W, METAL FILM
CRD4281-15
DS308RD15A1
25 26 27 28 29
4 5 8 3 3
RES, SO, 0805, 47, 5%, 1/10W, METAL FILM RES, SO, 0805, 4.7K, 5%, 1/10W, METAL FILM RES, SO, 0805, 2.2K, 5%, 1/10W, METAL FILM RES, SO, 0805, 100, 5%, 1/10W, METAL FILM RES, SO, 0805, 10K, 5%, 1/10W, METAL FILM
30 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 RES_0805 PTH-4 SO8 DPAK QFP48_7X7 MQFP100 SO8 SOT223 SO8 XTL_CA301 PHILIPS PHILIPS 9C08052A90J 9C08052A3900J PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS 9C08052A3401F 9C08052A6802J 9C08052A1003J 9C08052A2701J 9C08052A374J
13
RES, SO, 0805, 6.8K, 1%, 1/10W, METAL FILM
RES_0805
PHILIPS
9C08052A6801F
DS308RD15A1
R107 R91 R105,R106 T1 U1,U12 U2 U5 U6 U7 U8 U10 Y2 PHILIPS 9C08052A0R00J Pulse Engineering PE65612 Motorola MC1458 Motorola MC78M05ACDT CRYSTAL SEMI- CS4297A-KQ COND. CRYSTAL SEMI- CS4281-CM COND. MICROCHIP 24LC00/SN MICREL MIC2920A 3.3BS MOTOROLA MC33078D EPSON CA-301_24.576M-C
31 32 33 34
2 1 1 1 1
RES, SO, 0805, 3.4K, 1%, 1/10W, METAL FILM RES, SO, 0805, 68K, 5%, 1/10W, METAL FILM RES, SO, 0805, 100K, 5%, 1/10W, METAL FILM RES, SO, 0805, 2.7K, 5%, 1/10W, METAL FILM RES, SO, 0805, 374, 1%, 1/10W, METAL FILM
R45,R46,R47,R48,R49,R50, R51,R52,R53,R54, R61,R62,R74 R55,R57 R69 R71 R73 R85
1
RES, SO, 0805, 90.9, 1%, 1/10W, METAL FILM
1
RES, SO, 0805, 390, 5%, 1/10W, METAL FILM
35 36 37 38 39
2 1 2 1 1
RES, SO, 0805, 0, 5%, 1/10W, METAL FILM Pulse Transformer, Isolation, 1:1 Dual head phone amp 5V POS. VOLT. REG., 500ma IC, SO, AC '97 2.0 SERIAL CODEC w/ SRC
40
1
100 PIN MQFP PCI Controller
41 42 43 44
1 1 1 1
IC, SO, SOIC8, SERIAL EEPROM, 16 x 8, 2.5V 3.3V POS. VOLT.REG., 400ma,SO IC, SO, SOIC8, 33078, DUAL OP AMP XTAL, 24.576MHz, CA-301, Fund Mode, Par Res
CRD4281-15
28
* Notes *

▲Up To Search▲

Price & Availability of CRD4281-15

	To Download CRD4281-15 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .