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CRD4201-1S
CrystalClearTM AC '97 Six Channel CNR Audio Reference Design
Features
l Six
Description
The CRD4201-1S Communication and Networking Riser (CNR) reference design features four channel analog audio outputs and an optical S/PDIF digital output. This board is designed to provide the rear left, rear right, center, and sub-woofer channels in a six channel audio sub-system. The front left and right channels are provided by the primary audio codec on the motherboard. This board uses the CS4201 configured as a secondary audio codec. It has several advanced features such as serial digital audio output and up to 30 dB of microphone boost. The CRD4201-1S reference design is available by ordering the CMK4201-1 manufacturing kit. This kit includes the CRD4201-1, the CRD4201-1S, a full set of schematic design files (OrCAD(R) format), PCB job files (PADS(R) ASCII), PCB artwork files, and bill of materials. This reference design offers significant cost savings over competing solutions and can be easily modified to meet your specific design goals. ORDERING INFO CMK4201-1 (Manufacturing Kit)
Channel Analog Audio Output
- Two Channels on the Motherboard - Four Channels on the CRD4201-1S
l CS4201
audio codec and CS4334 DAC l 20-bit D to A conversion (DAC) l 18-bit A to D conversion (ADC) l S/PDIF (IEC-958) optical digital output l Complete suite of Analog I/O connections:
- Line, Mic, CD, Video, and Aux Inputs - Center, Sub-Woofer, and Rear Channel Outputs
l 2-layer
low cost PC board l Meets Intel (R) AC `97 version 2.1 specification l Exceeds Microsoft's(R) PC 2001 audio performance requirements.
MIC IN AUX IN VIDEO IN CD IN INT MODEM LINE IN
Microphone Input Line Input Center Channel and Sub-Woofer Outputs Rear Channel Outputs
Cirrus Logic CRD4201-1S
CS4201
SURR OUT
S/PDIF OUT
S/PDIF Digital Optical Output
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 Cirrus Logic, Inc. 2001 (All Rights Reserved)
JUL `01 DS483RD1SA1 1
CRD4201-1S
TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................3 2. SCHEMATIC DESCRIPTION ................................................................................3 2.1 CS4201 Audio Codec .................................................................................3 2.2 Analog Inputs ..............................................................................................4 2.3 Rear Channel Outputs ................................................................................4 2.4 Center and Sub-Woofer Outputs ................................................................4 2.5 S/PDIF Optical Output ................................................................................4 2.6 CNR Connector and EEPROM ...................................................................4 2.7 Component Selection .................................................................................4 2.8 EMI Components ........................................................................................5 3. GROUNDING AND LAYOUT ................................................................................5 3.1 Partitioned Voltage and Ground Planes .....................................................5 3.2 CS4201 Layout Notes .................................................................................5 4. REFERENCES .......................................................................................................6 4.1 ADDENDUM ...............................................................................................6 5. BILL OF MATERIALS .........................................................................................19
LIST OF FIGURES
Figure 1. Block Diagram ....................................................................................................7 Figure 2. CS4201 Audio Codec .........................................................................................8 Figure 3. Analog Inputs ......................................................................................................9 Figure 4. Rear Channel Outputs ......................................................................................10 Figure 5. Center Channel and Sub-Woofer Outputs ........................................................11 Figure 6. S/PDIF Optical Output ......................................................................................12 Figure 7. CNR Connector ................................................................................................13 Figure 8. PCB Layout: Top Assembly Drawing ................................................................14 Figure 9. PCB Layout: Top Layer ....................................................................................15 Figure 10. PCB Layout: Bottom Layer .............................................................................16 Figure 11. PCB Layout: Bottom Assembly ......................................................................17 Figure 12. PCB Layout: Top Silkscreen ..........................................................................18
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.
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1. GENERAL INFORMATION
The CRD4201-1S reference design is a CNR card that features four channel CD quality analog audio outputs. Combined with a CS4201 audio codec on the motherboard, the CRD4201-1S forms the rear left, rear right, center, and sub-woofer outputs of a six channel PC audio sub-system. The card includes a CS4201 AC '97 audio codec and a CS4334 24-bit serial stereo DAC. This combination gives the CRD4201-1S a rich feature set and industry leading audio performance. The CS4201 on this card is configured as the secondary AC `97 audio codec. This board must be used in conjunction with a CS4201 audio codec on the motherboard. For applications requiring a complete six channel audio subsystem on a single CNR card, use the CRD4201-1 also included in the CMK4201-1 manufacturing kit. The CS4201 audio codec has a stereo 20-bit DAC providing 2 channels of audio output, a stereo 18bit ADC, and a very flexible analog audio mixer. A CS4334 DAC is connected to the CS4201 serial output to provide two additional channels of analog audio. The CS4201 also features three stereo pairs of line level analog inputs, a microphone input, 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 CS4201 has internal registers that are used to control its various features such as volume levels, audio muting, and signal routing. The CS4201 maintains high audio quality and exceeds the Microsoft(R) PC-2001 audio performance specification. The CS4201 audio codec communicates to the audio controller across the CNR interface through the AC-Link. The AC-Link is a 5-wire serial digital interface that transfers digital audio between the two devices and also sends commands from the audio controller to the CS4201's registers. For more information on the AC-Link, see the Intel(R) AC'97 version 2.1 specification.
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2. SCHEMATIC DESCRIPTION
The block diagram in Figure 1 illustrates the interconnections between the various schematic pages found at the end of this document. Sections 2.1 through 2.8 describe the circuitry contained in these schematics. Note: this design is based on the CRD4201-1 six channel reference design with some population option changes.
2.1
CS4201 Audio Codec
The CS4201 audio codec is shown in Figure 2. The input signals to the CS4201 originate from the analog inputs in Figure 3, and the analog outputs are shown in Figure 5. AFLT1 and AFLT2 (pins 29, 30) require 1000 pF NPO/COG capacitors connected to analog ground. These capacitors provide a single pole lowpass filter at the inputs of the ADC. No other input filtering is required. FLT3D, FLTI, and FLTO (pins 32, 33, 34) form the internal analog 3D enhancement filter. The FLT3D pin requires a 0.01 F capacitor to analog ground. The FLT0 and FLT1 pins require a NPO/COG 1000 pF series capacitor. The AC-Link may require series termination resistors to prevent reflections. These are normally placed as close as possible to the transmitting end of a particular AC-Link signal. The SDATA_IN (pin 8) output of the CS4201 has a 47 series termination resistor. The CS4201 is powered by separate analog and digital power supplies, each with their own respective grounds. The AGND symbols refer to analog ground, and DGND symbols refer to digital ground. Each power pin needs separate decoupling capacitors. The CS4201 audio codec uses a 0.1 F ceramic capacitor for each of the 3.3 V digital and 5 V analog supply pins. These decoupling capacitors are placed as close as possible to their respective pins.
3
CRD4201-1S
2.2 Analog Inputs 2.5 S/PDIF Optical Output
The LINE_IN, VIDEO_IN, and AUX_IN stereo input jacks in Figure 3 are connected to a 6 dB voltage divider and AC coupled to the CS4201. The voltage divider allows input signal levels of up to 2 Vrms. The 2.2 F AC coupling capacitor values are used to minimize low frequency rolloff. The microphone circuit is AC coupled by a 1 F capacitor to minimize low frequency roll-off. The microphone circuit provides low voltage phantom power for electret microphones. Phantom power is derived from the +5 V analog supply and provides a maximum of 4.2 V under no load and a minimum of 2.0 V under a 0.8 mA load. These parameters are required by PC-99 and PC-2001. The CS4201 features a pseudo-differential CD input that minimizes common mode noise and interference. Each CD signal acts as one side of the differential input and CD_COM acts as the other side. CD_COM is used as the common return path for both the left and right channels.
The S/PDIF (IEC-958) digital output shown in Figure 6 is compatible with digital outputs on consumer devices such as Mini Disk recorders and consumer stereo receivers. The S/PDIF output operates at a fixed sampling frequency of 48 KHz. It uses an industry standard TOSLINK digital optical transmitter, the Toshiba TOTX-173.
2.6
CNR Connector and EEPROM
The Communications and Networking Riser interface (CNR) is shown in Figure 7. CNR is a motherboard interface that supports audio, modem, and LAN subsystems. CNR applications are targeted at OEMs, system manufacturers, and system integrators who wish to take advantage of physically separating their audio, modem, or LAN circuitry from the PC motherboard. CNR accomplishes this without the additional cost associated with the interface circuitry required for a PCI bus add-in card. The CRD4201-1S uses the AC-Link, SMBus and power. The SMBus is used to provide Plug-andPlay functionality for the CNR card. The SMBus signals are connected to a AT24C02 EEPROM. The EEPROM holds the Subsystem Vendor ID and Subsystem ID. It also contains other information for implementing a plug-and-play CNR card. For CNR design specifications, programming utilities, and information on programming the EEPROM see the Intel(R) Communication and Network Riser (CNR) homepage at http://developer.intel.com/technology/cnr/.
2.3
Rear Channel Outputs
The outputs in Figure 4 drive the rear left and right speakers. These outputs are driven digitally from the CS4201 through a serial output port and converted to analog audio through a high-performance CS4334 24-bit stereo DAC.
2.4
Center and Sub-Woofer Outputs
Figure 5 details the center and sub-woofer outputs. These signals originate from the Line Output pins of the CS4201 (center channel on pin 35 and subwoofer on pin 36.) These signals are buffered by a Motorola MC34072 dual op-amp. The MC34072 is a high performance low noise op-amp well suited for audio applications. These outputs are designed to drive high impedance loads of 10 K or higher.
2.7
Component Selection
Great attention was given to the particular components used on the CRD4201-1S 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 SMT package.
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CRD4201-1S
* Only single package passive components. No resistor packs. This reduces the risk of crosstalk between analog audio signals. All components except connectors and jumpers are in surface mount packages. The pins are arranged on the CS4201 so that the analog and digital signals are separated from each other. The analog and digital ground planes must be tied together for the CS4201 to maintain proper voltage references. For best results, the two ground planes are tied together with a single 50 mil trace under the CS4201 near its digital ground pins. A separate chassis ground provides a noise-free reference point for all of the EMI suppression components. The chassis ground plane is connected to the analog ground plane at the external jacks.
*
2.8
EMI Components
Optional capacitors and inductors are included to help the board meet EMI compliance tests, such as FCC Part 15. Choose these component values according to individual requirements.
3. GROUNDING AND LAYOUT
The component layout and signal routing of the CRD4201-1S provides a good model for laying out your own CNR add-in card.
3.2
CS4201 Layout Notes
3.1
Partitioned Voltage and Ground Planes
Refer to the CS4201 Data Sheet for analog and digital partitioning guidelines and bypass capacitor placement. Pay special attention to the bypass capacitors on REFFLT, AFLT1, AFLT2 and the power supply capacitors.
It is critical for good audio performance to separate digital and analog sections to prevent digital noise from affecting the performance of the analog circuits. The analog section of the CRD4201-1S is completely isolated from the digital section with a 100 mil partition. Partitioning is defined as the absence of copper on all signal layers. The analog and digital sections each have their own separate ground planes. All analog components, power traces, and signal traces are routed over the analog ground plane. Digital components, power traces and signal traces are not allowed to crossover into the analog section. The CS4201 audio codec is placed at the transition point between the analog and digital ground planes.
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CRD4201-1S
4. REFERENCES
1) Intel(R), Audio Codec `97 Component Specification, Revision 2.1, May 22, 1998. http://developer.intel.com/ 2) Intel(R), CNR Specification 1.0 http://developer.intel.com/technology/cnr/index.htm 3) Cirrus Logic, CS4201 Audio Codec `97 Data Sheet http://www.cirrus.com/products 4) Steve Harris, Clif Sanchez, Personal Computer Audio Quality Measurements, Ver 1.0 http://www.cirrus.com/pubs/meas100.pdf 5) Microsoft, PC Design Guidelines, http://www.microsoft.com/hwdev/desguid/ 6) M. Montrose. Printed Circuit Board Design Techniques for EMC Compliance, IEEE Press, New York: 1996.
4.1
* * *
ADDENDUM
Schematic drawings Layout drawings Bill of materials
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CRD4201-1S
ANALOG_IN
LINE_IN_L LINE_IN_R CD_IN_L CD_IN_R CD_COM VIDEO_IN_L VIDEO_IN_R AUX_IN_L AUX_IN_R MIC_IN PHONE_IN MONO_OUT PC_BEEP
CS4201
LINE_IN_L LINE_IN_R CD_IN_L CD_IN_R CD_COM VIDEO_L VIDEO_R LINE_OUT_L LINE_OUT_R VREFOUT HP_OUT_L HP_OUT_R HP_OUT_C
ANALOG_OUT
LINE_OUT_L LINE_OUT_R VREFOUT HP_OUT_L HP_OUT_R HP_OUT_C
ANALOG_OUT
AUX_IN_L AUX_IN_R MIC_IN SPDIF/SDO2 PRIM_DN#
SERIAL PORT
SDOUT SCLK LRCLK SDOUT SCLK LRCLK
PHONE_IN MONO_OUT PC_BEEP
ANALOG_IN
CS4201
SPDIF/SD02 MCLK
ARST# ABITCLK ASYNC ASDOUT ASDIN
SERIAL PORT CNR_BUS
ARST# ABITCLK ASYNC ASDOUT ASDIN
PRIM_DN#
SPDIF_OUT
SPDIF/SD02
CNR_BUS
SPDIF_OUT
Figure 1. Block Diagram
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7
LINE_OUT_L
LINE_OUT_R
MONO_OUT
8
+3.3VD +5VA
25 38 AVdd2 DVdd1 DVdd2 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 Vrefout REFFLT AFLT1 AFLT2 FLT3D FLTI FLTO XTL_IN XTL_OUT HPCFG HP_OUT_C GPIO0/LRCLK GPIO1/SDOUT ID1# ID0# 45 46 31 40 43 44 EAPD/SCLK 47 SPDO/SDO2 48 MONO_OUT 37 HP_OUT_R 41 HP_OUT_L 39 LINE_OUT_R 36 LINE_OUT_L 35 RESET# 11 SYNC 10 SDATA_IN 8 SDATA_OUT 5 BIT_CLK 6 DVss2 7 DVss1 4 AVss2 1 9 26 42
+3.3VD U1 CS4201
+5VA
C1 0.1uF Z5U DGND PC_BEEP
13 14 12
C2 0.1uF Z5U AGND
C3 0.1uF Z5U
C4 0.1uF Z5U
AVdd1
AVss1
R1 R2 47
0
DGND
15 16 17 18 19 20 21 22 23 24 28 27 29 30 32 33 34 2 3
AGND PHONE_IN AUX_IN_L AUX_IN_R VIDEO_IN_L VIDEO_IN_R CD_IN_L CD_COM CD_IN_R MIC_IN LINE_IN_L LINE_IN_R VREFOUT
ABITCLK ASDOUT ASDIN ASYNC ARST# LINE_OUT_L LINE_OUT_R HP_OUT_L HP_OUT_R MONO_OUT SPDIF/SD02 SCLK PRIMARY_DN#
C5 2.2uF Y5V
C6 0.1uF X7R
C7 1000pF NPO
C8 1000pF NPO
C9 0.01uF X7R
C10 1000pF NPO
HP_OUT_C LRCLK SDOUT
AGND
GND TIE 0.050 inches
AGND
DGND
Y1
C11 1000pF NPO
C12 1000pF NPO
C13 1000pF NPO
NO POP C14 NO POP
C15 NO POP
AGND
DGND
DGND
CRD4201-1S
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Figure 2. CS4201 Audio Codec
CD IN LINE IN
R3 J1 LINE_IN_R + R4 6.8K C17 + CD_IN_R 2.2uF ELEC 100 C16 2.2uF ELEC R5 R6 6.8K AGND 47K
L1
J2
AGND
AGND
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AGND 4 3 5 2 1 PHONO-1/8 R8 LINE_IN_L + 6.8K C21 R7 CD_COM + 2.2uF ELEC 100 C18 4.7uF ELEC R9 47K
4 3 2 1
31@100MHz
L2
4X1HDR-AU
31@100MHz
Connect CGND to AGND at
AGND R10 6.8K
C19 100pF NPO
C20 100pF NPO
AGND
the jack
R11 + CD_IN_L AGND CGND 100 C22 2.2uF ELEC
L3
31@100MHz AGND
R12
47K
VIDEO IN MIC IN
R13 J3 4 VIDEO_IN_R R17 100 C24 1uF Y5V + 6.8K C23 R14 2.2K R15 1.5K 2.2uF ELEC
+5VA
L4
J4 R16 6.8K
31@100MHz AGND
4 3 2 1 R18 PHONO-1/8 VIDEO_IN_L + 6.8K C25 2.2uF ELEC
5 2 1
MIC_IN
L5
C29 NO POP
4X1HDR-AU
Connect CGND to AGND at the jack
C26 100pF NPO
C27 100pF NPO
+ C28 10uF ELEC
31@100MHz AGND
R19
6.8K
AGND CGND
AGND
AGND
AGND
AUX IN PC SPEAKER IN
R20 + AUX_IN_R J6 31@100MHz 2 1 R24 2X1HDR-SN/PB AUX_IN_L DGND + 6.8K C33 2.2uF ELEC 6.8K C30 L7 R21 47K 2.2uF ELEC
L6
C31
J5 R22 6.8K
0.1uF Z5U
PC_BEEP
31@100MHz AGND
4 3 2 1
R23 4.7K
C32 2700pF X7R
L8
-3 dB corners at 60 Hz and 13.8 kHz (Ri >= 28 kOhm)
AGND AGND
4X1HDR-AU R25 6.8K AGND
31@100MHz
AGND
INTERNAL MODEM CONNECTION
R26 PHONE_IN + 6.8K C34 2.2uF ELEC
L9
J7 R27 6.8K
4 3 2 1 AGND R28 + 0 C35 2.2uF ELEC
31@100MHz
L10
4X1HDR-AU R29 47K
MONO_OUT
31@100MHz
CRD4201-1S
Figure 3. Analog Inputs
9
SDOUT C37 +
2 3 4 7 6 5
1
SDATA
AOUTL
8
+
+
SPDIF/SD02 SCLK LRCLK MCLK C44 +
10
+5VA
SURROUND JACK
U2 C36
4
CS4334 10uF ELEC R31 560
2 1
R30
560
J8
DEM#/SCLK LRCK MCLK
VA+ AGND AOUTR
10uF ELEC
PHONO-1/8 R32 270K +5VA R33 270K R34 47K R35 47K C38 2700pF X7R C39 2700pF X7R
Connect CGND to AGND at the jack
+ C40 10uF ELEC AGND AGND
C41 0.1uF Z5U
C42 0.1uF Z5U CGND AGND
AGND
U3 C43 NO POP
NO POP R36 NO POP
4
J9
1 2 3 4 SDATA DEM#/SCLK LRCK MCLK AOUTL VA+ AGND AOUTR
8 7 6 5
NO POP
R37
NO POP
2 1
NO POP R38 NO POP AGND R39 NO POP R40 NO POP R41 NO POP C45 NO POP C46 NO POP
Connect CGND to AGND at the jack
AGND
AGND
CGND
AGND
CRD4201-1S
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Figure 4. Rear Channel Outputs
+
3
+
R46
33K
Vcc
5
R47 AGND AGND
6
27K MC34072D
+
7
Vee
+
+
+
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CNT/LFE
R42 33K
JACK
C47 C48 J10
4
22pF NPO U4A C49
10uF ELEC
R43
2
27K MC34072D R44 220K R45 220K +5VA
+
1
10uF ELEC
2 1
LINE_OUT_R
PHONO-1/8
Connect CGND to AGND at the jack
C50 100pF NPO
C51 100pF NPO
VREFOUT C53 22pF NPO U4B
C52 0.1uF Z5U
CGND
AGND
LINE_OUT_L
C54
NO POP
4
J11
HP_OUT_R C55 NO POP
2 1
HP_OUT_L C56 NO POP
HP_OUT_C
NO POP
R48 NO POP
R49 NO POP
C57 NO POP
C58 NO POP
Connect CGND to AGND at the jack
AGND
CGND
AGND
CRD4201-1S
Figure 5. Center Channel and Sub-Woofer Outputs
11
CRD4201-1S
SPDIF/SD02
J12
5
+5VD
4 3
DGND
R50 C59 0.1uF Z5U
8.2K
2 1 6
TOTX-173 DGND
DGND
Figure 6. S/PDIF Optical Output
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P1
+3.3VD
U5 SMB_A0 SMB_A1 SMB_A2
1 2 3 4 A0 A1 A2 Vss Vcc WP SCL SDA 8 7 6 5
3
2
1
1
2
ASYNC ASDOUT ABITCLK ASDIN
3
GND
2
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SMB_SCL SMB_SDA C60 0.1uF Z5U AT24C02 DGND DGND +12VD +12V +3.3Vdual ARESET# ARST# +5VD
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 reserved reserved reserved GND reserved reserved GND LAN_TXD1 LAN_RSTSYNC GND LAN_RXD2 LAN_RXD0 GND reserved +5Vdual USB_OC# GND -12V +3.3VD reserved reserved GND reserved reserved GND LAN_TXD2 LAN_TXD0 GND LAN_CLK LAN_RXD1 reserved USB+ GND USB+12V GND +3.3Vdual +5VD A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19
+3.3VD
-12V
JP1 3x1 HDR 1 2 3
+3.3Vdual DGND
JP2 3x1 HDR PR_DN#
SMB_A0 SMB_SCL PR_DN# ASDIN1 ASDIN0
SMB_A1 SMB_A2 SMB_SDA ARESET#
JP3 3x1 HDR 1 2 3
PRIM_DN#
B20 B21 B22 B23 B24 B25 B26 B27 B28 B29 B30 GND EE_DOUT EE_SHCLK GND SMB_A0 SMB_SCL PRIMARY_DN# GND AC97_SYNC AC97_SDATA_OUT AC97_BITCLK GND EE_DIN EE_CS SMB_A1 SMB_A2 SMB_SDA AC97_RESET# reserved AC97_SDATA_IN1 AC97_SDATA_IN0 GND
A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30
DGND
CNR Connector
JP4 3x1 HDR DGND
DGND +12VD +3.3VD U6
1 IN OUT 3
+5VA
J13 +5VD -12V
DGND + C62 10uF ELEC C63 0.1uF Z5U + C64 10uF ELEC
C65 0.1uF Z5U MC78M05C
+ C66 10uF ELEC
+ C67 10uF ELEC
C61 0.1uF Z5U
ASDIN0 ASDIN1 ASDOUT ABITCLK ASYNC ARESET# PR_DN# +12V
20 18 16 14 12 10 8 6 4 2
19 17 15 13 11 9 7 5 3 1
10x2 CON DGND AGND DGND
Secondary card jumper connections:
JP1 (2&3)
JP2 (1&2)
JP3 (2&3)
JP4 (2&3)
Connect AGND to DGND with a 50 mil trace near the regulator.
Connect CGND to DGND with a 50 mil trace near the finger
edge of the board.
CRD4201-1S
Figure 7. CNR Connector
13
CRD4201-1S
Figure 8. PCB Layout: Top Assembly Drawing
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Figure 9. PCB Layout: Top Layer
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Figure 10. PCB Layout: Bottom Layer
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Figure 11. PCB Layout: Bottom Assembly
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Figure 12. PCB Layout: Top Silkscreen
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5. BILL OF MATERIALS
Manufacturer KEMET C0805C104M5UAC CAP, 0805, Z5U, .1uF, 20%, 50V Part Number Description
Item
Quantity
Reference
1
13
C1,C2,C3,C4,C31,C41,C42,
DS483RD1SA1
KEMET KEMET KEMET KEMET NO POP NO POP NO POP C0805C103K5RAC CAP, 0805, X7R, .01uF, 10%, 50V C0805C102K5GAC CAP, 0805, C0G, 1000pF, 10%, 50V C0805C104K5RAC CAP, 0805, X7R, .1uF, 10%, 50V C1206C225M8VAC CAP, 1206, Y5V, 2.2uF, 20%, 10V PANASONIC ECE-V1VS2R2SR CAP, SMT A, ELEC, 2.2uF, 20%, 35V PANASONIC KEMET KEMET PANASONIC ECE-V1CA100R C0805C105M8VAC C0805C101J5GAC ECE-V1ES4R7SR CAP, SMT A, ELEC, 4.7uF, 20%, 25V CAP, 0805, COG, 100pF, 5%, 50V CAP, 0805, Y5V, 1uF, 20%, 10V CAP, SMT B, ELEC, 10uF, 20%, 16V KEMET NO POP KEMET KEMET NO POP SAMTEC LZR ELECTRONICS MOLEX LZR ELECTRONICS C0805C272K5RAC NO POP C0805C220K5GAC C0805C101J5GAC NO POP TSW-103-07-T-S SJ372 70553-0003 SJ374 CAP, 0805, X7R, 2700pF, 10%, 50V NO POP CAP, 0805, C0G, 22pF, 10%, 50V CAP, 0805, C0G, 100pF, 5%, 50V NO POP HDR, 3x1, 0.025" PIN, 0.1" CTR CONN, 1/8" DOUBLE SW. STEREO PHONE JACK HDR, 4X1, 0.025" PIN, 0.1" CTR, 15u" AU CONN, 1/8" SINGLE SW. STEREO PHONE JACK
C52,C59,C60,C61,C63,C65
2
1
C5
3
1
C6
4
6
C7,C8,C10,C11,C12,C13
5
1
C9
6
7
C14,C15,C29,C45,C46,C57
C58
7
10
C16,C17,C21,C22,C23,C25
C30,C33,C34,C35
8
1
C18
9
4
C19,C20,C26,C27
10
1
C24
11
10
C28,C36,C37,C40,C48,C49
C62,C64,C66,C67
12
3
C32,C38,C39
13
3
C43,C44,C56
14
2
C53,C47
15
2
C50,C51
16
2
C54,C55
17
4
JP1,JP2,JP3,JP4
18
1
J1
19
4
J2,J4,J5,J7
CRD4201-1S
20
1
J3
19
20
MOLEX LZR ELECTRONICS NO POP TOSHIBA AMP TDK HF50ACB321611-T IND, FBEAD, 1206, 31@100MHz, 25% 103309-5 CONN, 10x2 RIBBON, MALE, STRAIGHT, SHROUDED TOTX173 CONN, OPTICAL TOSLINK TRANSMITTER NO POP NO POP SJ373 CONN, 1/8" NON-SW. STEREO PHONE JACK 70553-0036 HDR, 2X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB NONE PHILIPS PHILIPS PHILIPS PHILIPS 9C08052A6801F 9C08052A1000J 9C08052A47R0J 9C08052A0R00J NONE CNR BUS CONNECTOR RES, SO, 0805, 0, 5%, 1/10W, METAL FILM RES, SO, 0805, 47, 5%, 1/10W, METAL FILM RES, SO, 0805, 100, 5%, 1/10W, METAL FILM RES, SO, 0805, 6.8K, 1%, 1/10W, METAL FILM PHILIPS 9C08052A4702J RES, SO, 0805, 47K, 5%, 1/10W, METAL FILM PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS NO POP 9C08052A2201J 9C08052A1501J 9C08052A4701J 9C08052A5600J 9C08052A2703J NO POP RES, SO, 0805, 2.2K, 5%, 1/10W, METAL FILM RES, SO, 0805, 1.5K, 5%, 1/10W, METAL FILM RES, SO, 0805, 4.7K, 5%, 1/10W, METAL FILM RES, SO, 0805, 560, 5%, 1/10W, METAL FILM RES, SO, 0805, 270K, 5%, 1/10W, METAL FILM NO POP PHILIPS PHILIPS 9C08052A3302F 9C08052A2702F RES, SO, 0805, 33K, 1%, 1/10W, METAL FILM RES, SO, 0805, 27K, 1%, 1/10W, METAL FILM
21
1
J6
22
2
J8,J10
23
2
J9,J11
24
1
J12
25
1
J13
26
10
L1,L2,L3,L4,L5,L6,L7,L8,
L9,L10
27
1
P1
28
2
R1,R28
29
1
R2
30
4
R3,R7,R11,R17
31
14
R4,R6,R8,R10,R13,R16,R18,
R19,R20,R22,R24,R25,R26
R27
32
7
R5,R9,R12,R21,R29,R34,
R35
33
1
R14
34
1
R15
35
1
R23
36
2
R30,R31
37
2
R33,R32
38
8
R36,R37,R38,R39,R40,R41
R48,R49
39
2
R42,R46
CRD4201-1S
DS483RD1SA1
40
2
R43,R47
21
PHILIPS PHILIPS CIRRUS LOGIC CIRRUS LOGIC NO POP MOTOROLA ATMEL MOTOROLA NO POP NO POP NO POP MC78M05CDT AT24C02N-10SC-2.7 IC, SO, SOIC8, SERIAL EEPROM, 256 x 8, 2.7V IC, SO, +5V REGULATOR, DPAK, 4%, 500mA MC34072D NO POP NO POP IC, SO, SOIC8, 34072, SINGLE SUPPLY DUAL OP AMP CS4334-KS IC, SO, SOIC8, ADC, STEREO CS4201-JQ IC, TQFP, AC '97 2.1 SERIAL CODEC W/ HP AMP + SRC 9C08052A8201J RES, SO, 0805, 8.2K, 5%, 1/10W, METAL FILM 9C08052A2203J RES, SO, 0805, 220K, 5%, 1/10W, METAL FILM
41
2
R45,R44
42
1
R50
43
1
U1
44
1
U2
45
1
U3
46
1
U4
47
1
U5
48
1
U6
49
1
Y1
CRD4201-1S
DS483RD1SA1

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