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CDB8415A Evaluation Board Data Sheet for the CS8415A
Features
l CS8415A
Description
The CDB8415A is designed to allow easy evaluation of the CS8415A and CS8405A. The board is set up for easy connection to an Audio Precision or a Rohde and Schwarz test system. Input and output data may independently be set to either AES/EBU or S/PDIF in optical or coaxial physical formats. Windows 98 PC software provides a GUI interface to make configuration easy. The software communicates through the PC's Parallel port to control the internal registers so that all the possible software modes of the CS8415A and CS8405A may be tested. ORDERING INFORMATION CDB8415A Evaluation Board
Digital Audio Receiver l CS8405A Digital Audio Transmitter l Receives and transmits AES/EBU, S/PDIF and EIAJ-340 compatible digital audio l Analog 5 Volt supply. l Digital 5 Volt or 3 Volt supply l Crystal supplied to allow transmitter to operate at 48 kHz sample rate l Digital patch area
I
Parallel port to PC Optical In S/PDIF In AES 3 In CS8415A CS8405A Optical Out S/PDIF Out AES 3 Out
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. 2000 (All Rights Reserved)
JAN `00 DS470DB1 1
CDB8415A
TABLE OF CONTENTS
1. OVERVIEW ............................................................................................................................... 3 1.1 CS8415A an CS8405A ...................................................................................................... 3 1.2 Parallel Port ....................................................................................................................... 3 1.3 Serial Digital Inputs ............................................................................................................ 3 1.4 Serial Digital Outputs ......................................................................................................... 3 1.5 Three Wire Serial Input and Output ................................................................................... 3 1.6 Micro-Controller Serial Ports .............................................................................................. 3 1.7 Crystal Oscillators .............................................................................................................. 3 1.8 LED Function Indicators ..................................................................................................... 3 2. CDB8415A.EXE QUICK START GUIDE .................................................................................. 5 2.1 Setting up the hardware: .................................................................................................... 5 2.2 Installing the software: ....................................................................................................... 5 2.3 Starting up the software: .................................................................................................... 5 2.4 Starting up the Hardware: .................................................................................................. 5 3. CDB8415A.EXE USER'S GUIDE ......................................................................................... 6 3.1 Main Window ..................................................................................................................... 6
LIST OF FIGURES
Figure 1. CDB8415A Main Control Panel........................................................................................ 6 Figure 2. CDB8415A Control Panel ................................................................................................ 7 Figure 3. CDB8405A Control Panel ................................................................................................ 7 Figure 4. Advanced Control Panel .................................................................................................. 8 Figure 5. Parallel Port...................................................................................................................... 9 Figure 6. Power Supplies .............................................................................................................. 10 Figure 7. 8415A Receiver.............................................................................................................. 11 Figure 8. CS8405A Transmitter..................................................................................................... 12 Figure 9. Silkscreen....................................................................................................................... 13 Figure 10. Top PCB....................................................................................................................... 14 Figure 11. Bottom PCB ................................................................................................................. 15
LIST OF TABLES
Table 1. System Connections ......................................................................................................... 4 Table 2. CDB8415A Jumper Settings ............................................................................................. 4
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/
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. OVERVIEW
The CDB8415A evaluation board contains a CS8415A and a CS8405A and the supporting circuitry necessary for them to operate. The input and output options include AES3 and S/PDIF in optical and coaxial formats. In software mode, the control registers of the CS8415A and CS8405A are set through the parallel port of a PC by a Windows 98 based program to control the configuration. also choose to enable either the coaxial S/PDIF output or the XLR AES3 output.
1.5
Three Wire Serial Input and Output
1.1
CS8415A an CS8405A
The features and functions of the CS8415A and the CS8405A are described in their data sheets.
Jacks J32 and J51 are provided so the user may access the three wire serial ports of the receiver and transmitter. The purpose of these ports is to allow the user to connect his external circuitry to the receiver and transmitter. A flat jumper cable is also provided to allow the output of the receiver to drive the input of the transmitter. This allows the user to operate the board in transceiver mode.
1.6
Micro-Controller Serial Ports
1.2
Parallel Port
To use the CS8415 A and CS8405A on the board in software mode, the parallel port on the upper right hand side of the board should be connected to the parallel port of the PC running the CDB8415A control software. In software mode remember to enable the clocks in both parts from the configuration software.
1.3
Serial Digital Inputs
The left hand end of the board is occupied by a row of serial digital audio input connectors. In hardware mode, the user may select from the optical connector, the XLR connector, or the first RCA jack. Only one of these inputs should be connected at a time. In software mode the user has access to these inputs and to the S/PDIF multiplexer. In the multiplexer mode jack J17, labeled OPT, should be jumpered in the enable position. The user can provide inputs to any or all of the seven RCA input jacks. The active input is selected by setting the three least significant bits of Control Register 2. Please note that the current version of the board has a layout error. Jacks 6 and 7 are reversed.
Headers J6 and J37 provide access to the serial control ports of the CS8415A and the CS8405A. Each jack has four serial control lines, a reset line, and an interrupt line. This allows the user to connect an external MCU of his choice to carry out testing and software development. These ports are in the same format as the header on the CDB8420 or the CDB8427. These two boards use an Atmel AVR microcontroller that can be patched in to communicate with the parts on this board. Another alternative is to patch in the development board of the MCU of your choice.
1.7
Crystal Oscillators
Oscillator U7 provides the Output Master Clock for the CS8405A. The crystal oscillator on the board is mounted in pin sockets that allow it to be removed or replaced. The board is shipped with a 12.288 MHz crystal oscillator stuffed at U7 which sets the output sampling rate to 48 kHz.
1.8
LED Function Indicators
1.4
Serial Digital Outputs
On the upper right hand side of the board are the three serial digital audio outputs. The Optical S/PDIF output is always enabled. The user may
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LEDs D3 and D4 on the middle left hand side of the board allow the user to monitor the receiver status. LED D4 is connected to the RERR pin of the CS8415A and LED3 is connected to NVERR. See the CS8415A data sheet for an explanation of the errors that activate each of these outputs.
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CDB8415A
CONNECTOR +5V +3.3V-5V GND OPTICAL INPUT S/PDIF INPUT AES3 INPUT PARALLEL PORT OPTICAL OUTPUT S/PDIF OUTPUT AES3 OUTPUT J32 J51 J6 J37 INPUT/OUTPUT Input Input Input Input Input Input Input/Output Output Output Output Input/Output Input/Output Input/Output Input/Output SIGNAL PRESENT +5 Volt Analog power +3.3 to 5.0 Volt Digital power Ground connection from power supply Digital Audio Interface optical input Digital Audio Interface coaxial input Digital Audio Interface XLR input Parallel port for connection to parallel port of PC Digital Audio Interface optical output (always active) Digital Audio Interface coaxial output Digital Audio Interface XLR output I/O for RMCLK, ISCLK,ILRCK, and SDIN I/O for OLRCK, OSCLK, OMCK, and SDOUT 12-pin header for CS8415A control from external C 12-pin header for CS8405A control from external C
Table 1. System Connections JUMPER PURPOSE J7 Selects physical format of digital audio interface input J16 Enables AES3 INPUT J18 J17 J46 J49 J42 Enables S/PDIF INPUT Enables OPTICAL INPUT Selects physical format of digital audio interface output Enables S/PDFIF OUTPUT Choose HARDWARE/SOFTWARE POSITION AES3 & S/PDIF OPTICAL ENABLE DISABLE ENABLE DISABLE ENABLE DISABLE AES3 S/PDIF ENABLE DISABLE H S FUNCTION SELECTED Specifies input as either AES3 or S/PDIF Specifies input as OPTICAL AES3 INPUT enabled AES3 INPUT disabled S/PDIF INPUT enabled S/PDIF INPUT disabled OPTICAL INPUT enabled OPTICAL INPUT disabled Specifies output as AES3 XLR Specifies output as S/PDIF coaxial S/PDIF OUTPUT enabled S/PDIF OUTPUT disabled Enables hardware mode Enables software mode
Table 2. CDB8415A Jumper Settings
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2. CDB8415A.EXE QUICK START GUIDE 2.1 Setting up the hardware:
1) Check to make sure the flat three wire cable is connected from SDOUT, OLRCK, and OSCLK of J32 to SDIN, ILRCK, and ISCLK of J51. 1) Connect the Analog and Digital supplies of CDB8415A to a 5V DC power supply. 2) Set: J7 to OPT, and J17, OPT to Enable. 3) Set J55 to Receiver 4) Connect the CDB8415A to the PC parallel port using the parallel cable provided. 5) Apply power to the board. 6) Press the RESET switch (S5). cluded DLLs msvcrt.dll and mfc42.dll into your \Windows\System directory. 4) If desired, create a shortcut to CDB8415A.exe on your desktop. At this point, you are ready to start up the software.
2.3
Starting up the software:
1) Double-click on CDB8415A.exe or its shortcut. 2) Click on the button on the lower right labeled Advanced. 3) Select the LPT port you are using to connect to the CDB8415. 4) Shut down the application, reset the board, and then restart the application.
2.4
Starting up the Hardware:
2.2
Installing the software:
1) Create a directory called CDB8415A anywhere on your system. 2) Copy CDB8415A.exe into this directory. 3) If you do not already have them, copy the in-
1) Click to enable the clocks for the CS8405A and click to enable the clocks for the CS8415A. 2) Check the performance of the board by doing an FFT with a -1dBFS 1kHz sine wave for input at a 48kHz sample rate using the optical input and optical output.
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CDB8415A
3. CDB8415A.EXE USER'S GUIDE 3.1 Main Window
The CDB8415A Control Panel allows you to view the configuration of the CS8415A and the CS8405A. A limited set of controls are available for each part, including control of the enable clocks function (RUN bit in the Clock Control register) for each part. Clicking the left mouse button on either the CS8405A button or the CS8415A button will bring up a contol panel containing all the register bits relevant to that part. Clicking on the Advanced button at the lower right brings up the Advanced mode control panel. In Advanced mode you may read and write hex values into specified registers in either part. Changes made on the CS8405A or CS8415A control panels will also be immediately reflected in the Main Window, so you may wish to arrange them so that they do not obscure each other. Of particular use are the windows displaying the serial input formats of the two chips.
Figure 1. CDB8415A Main Control Panel
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Figure 2. CDB8415A Control Panel
Figure 3. CDB8405A Control Panel
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CDB8415A
Figure 4. Advanced Control Panel
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1
1
DB25M_RA J1 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 2 3 4 5 6 7 8
R3 R2 R4 R5 R6
4.7K 4.7K 4.7K 4.7K 4.7K DIN_LVL CLK_LVL AD0_CS1 AD0_CS2 RESET
.1uF C3 VD 20 .1uF D1 D2 D3 D4 D5 D6 D7 D8 CLK OC U3 74HCT574 5 VD D2 2 R8 74HCT125 S1 BAT85 511K 3 B3W_1100 U4C 74HCT125 8 9 R9 511 5 + 4 1 C5 1uF 50V U4B 6 /RST 1 5 U2B 6 74HC125 1 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 19 18 17 16 15 14 13 12 2 D1 BAT85 4 R7 2K CCLK CDIN /CS1 /CS2 2 3 CDOUT
2 3 4 5 6 7 8 9 11 1
VD
4
74HCT125 _READ_SDA _LATCH 2 U4A 3
10
GND
C4 VD .1uF
1
10
Figure 5. Parallel Port 9
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U1A CLK_ENA VD 1 RN1 1K C2 VD 2 3
C1 DIN_ENA U1B 74HCT125 5 74HCT125 VD 6 U2A 74HC125 2K R1 .1uF VD
VD
Schottky Diodes
RESET
U4D 74HCT125 11 12
CDB8415A
2
J3 1 2 C8 Z2 RED J4 1 1 P6KE6.8A 100uF 6.3V .1uF + C9 VD
BLACK
1
10
J2 1 C6 Z1 RED P6KE6.8A 100uF 6.3V .1uF + C7 VA L1 FERRITE BEAD
CDB8415A
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Figure 6. Power Supplies
CDIN
1 2 3 4 5 OPT1 C11 J9 .1uF PHONO-JACK TRANSFORMER T1 1 2 8 C13 HDR3X1 J7 1 2 3 J6 VD CDOUT
/CS1
/RST
L2 47UH
CCLK
2 4 6 8 10 12
1 3 5 7 INT1 9 11
6
22pF
3
CON XLR_F
HDR3X1 C16 .1uF TP5 TP1 TP3 TP7 TP9 TP11 TP13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 U5 CDOUT /CS /EMPH RXP RXN VA AGND FILT /RST RMCK RERR NC1 NC2 NC3 CS8415_SPI CCLK CDIN NC6 NC5 H/S VD DGND DGND2 U INT SDOUT OLRCK OSCLK NC4 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TP2 TP4 TP6 TP8
H/S
1 3 5 7
R23 75 U2D 12 74HC125 R26 11 825 13 LED_R 1 D4 2 VA 1uF 50V VD 1uF 50V
SDOUT OLRCK OSCLK RMCK
2 4 6 8
10
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C10 6 .01uF J5 1 3 5 7 9 11 2 4 6 8 10 12 HDR6X2 C12 J8 J10 HDR2X1 R10 VD .1uF R11 HDR3X1 J16 4 5 236 R12 110 HDR3X1 HDR2X1 75 R13 C14 J14 HDR2X1 47K J17 1 2 3 VD R15 J19 1 2 3 HDR3X1 VD J21 1 2 3 R14 75 .01uF J15 PHONO-JACK .01uF C U COPY ORIG /EMPH /AUDIO J11 PHONO-JACK HDR2X1 VD
OPT AES3/S/PDIF
J12 VD
HDR6X2
STARTUP
J13 1 2 3
S/PDIF
1 2 3 2
S/PDIF
J18 1 2 3 HDR3X1
OPT
C15
J20
47K
STARTUP
HDR3X1
1 J22 PHONO-JACK C17 .01uF TP15 J23 HDR2X1 TP21 R17 75 J28 PHONO-JACK C19 .01uF HDR2X1 R21 75 J33 PHONO-JACK C26 .01uF J31 HDR3X1 1 2 3 J27 R22 47K RMCK HDR2X1 TP23 J24 TP27 TP25 TP17 TP19 RMCK
STARTUP
TP10 TP12 TP14 TP16 TP18 TP20
R16 47K
TP22 SDOUT OLRCK OSCLK EXMCK R19 TP28 J25 HDR2X1 47K TP24 TP26 C18 .01uF
J26 PHONO-JACK
R18 75
1000pF R20 C22 VD C20 .1uF C23 C27 + 1.78K 8200pF C25 + .47uF
1000pF C21 .1uF C24 C28 + J32 HDR4X2 1 2 3
J29
J30 HDR3X1 HDR2X1
CHS
U2C R24 9 47K
74HC125 R25 8 825 LED_R 1 D3 2
NVERR
CDB8415A
RERR
Figure 7. 8415A Receiver 11
CDIN
J34 VD HDR3X1
CDOUT
1 2 3
R27
47K
/RST
/CS2
COPY
J36 HDR3X1 1 2 3 R29 47K
COPY
CCLK
2 4 6 8 10 INT2 12
J38 HDR3X1
1 2 3
R30
100
VD
1 3 5 7 9 11
J39 HDR2X1 J40 HDR2X1 /AUDIO VD R31 6.2K 1 2 R32 VD VD 3 4 J43 HDR2X1 5 C29 OPT2 .1uF 6
SFMT0
VD
SFMT1
VD J41 HDR3X1 J44 HDR3X1 1 2 3 R34 100 1 2 3 R33 100
100 1 2 3 R35 TP29 TP31 U6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CDOUT /CS AD2 RXP DGND2 VD2 DGND4 DGND3 /RST NC1 NC2 ILRCK ISCLK SDIN CS8405_SPI CCLK CDIN TXP TXN H/S VD DGND OMCK U INT NC5 NC4 NC3 TCBL 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TP30 TP32 TP34 TP36 TP38 TP40 TP42 100
H/S
J47 HDR3X1
1 2 3
R38
100 TP43 TP45 TP47 TP49 TP51
TP39 TP41
R37 TP44 TP46 TP48 TP50 TP52 TP54 TP56 R39 681
J46 HDR3X1
1
2
TP53 TP55
ILRCK ISCLK SDIN
6
1 3 5 7
2 4 6 8
SDIN ILRCK ISCLK OMCK
12
VD C VD R28 47K 1 2 3 J35 HDR3X1
ORIG
ORIG VD
/EMPH
VD
/EMPH
J37 HDR6X2
H/S
J42 HDR3X1
SOFTWARE
J45 HDR3X1 1 2 3 U C30 TRANSFORMER .1uF R36 110
APMS
VD TP37 TP33 TP35
HARDWARE
AES3
1 2 3
T2
PHONO-JACK J48 8
OMCK
TCBLD
4
5 HDR3X1 J49
S/PDIF
84.5 R40
2
1000pF J51 HDR4X2 C31 .1uF C34 VD
1000pF 47K C32
1 2 3 C33
S/PDIF
3 J50 CON_XLR_M
.1uF C35 C36 + R41 47K
1
22pF
L3 VD
R42 2 Ohms + C37 C38 .1uF
VD HDR3X1 1 2 3 J52 R43 47K 1 2 3 J53 VD HDR3X1 47K 1 2 3 J54 R44 VD HDR3X1
C39 1000pF R45 VD 14 100 R46 100
FERRITE BEAD
1uF 50V
VD 1uF 50V
/AUDIO
VALIDITY
CEN
U7 1 NC
7
GND Out XCO
8 R47 J55 1 2 3 HDR3X1 100 EXMCK
CDB8415A
CRYSTAL RECEIVER
RMCK
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Figure 8. CS8405A Transmitter
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CDB8415A
Figure 9. Silkscreen 13
14
CDB8415A
Figure 10. Top PCB
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Figure 11. Bottom PCB 15

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