Cirrus Logic CDB8422 - Manual

Copyright  Cirrus Logic, Inc. 2010
(All Rights Reserved) http://www.cirrus.com
Evaluation Board for CS8422
Features
 IEC-60958, AES3/EBU, S/PDIF Inputs
– Single-Ended Inputs via Optical and RCA
Input Jacks
– Differential Inputs via XLR Input Jack
 S/PDIF Outputs
– Optical and RCA Output Jacks
– CS8406 Digital Audio Transmitter
 I/O Stake Headers
– External Control Port Accessibility
– External Serial Audio I/O Accessibility
 3.3 V Logic Interface
 Powered by Single External Power Supply or
PC USB Port Connection
 H/W Control via DIP Switches
 FlexGUI S/W Control - Windows ® Compatible
– Pre-Defined & User-Configurable Scripts
Description
Using the CDB8422 evaluation board is an ideal way to
evaluate the CS8422. Use of the board requires a digital
signal source, an analyzer, and a power supply. A Win-
dows
PC-compatible computer is also required if using
software mode to configure the CDB8422.
S/PDIF and AES3/EBU input connections are made via
RCA phono, optical, or XLR connectors to the CS8422.
S/PDIF output connections are made via RCA phono or
optical connectors from the CS8406 (S/PDIF Tx). Sys-
tem timing can be provided by a S/PDIF or AES3/EBU
input signal, by the CS8422 with supplied master clock,
or by an I/O stake header with a DSP connected.
The provided Windows-based software GUI makes
configuring the CDB8422 easy. The software communi-
cates through the PC’s USB port to configure the board
so that all features of the CS8422 can be evaluated.
The board may also be configured without a PC con-
nection by using hardware switches; however, not all
configurations of the CDB8422 are possible in hard-
ware mode.
ORDERING INFORMATION
CDB8422
Evaluation Board
CS8406
CS8422
RX Input
TX Output
Canned
Oscillator
Crystal
Oscillator
Jumper
ILRCK
ISCLK
SDIN
Mux XTI
FPGA
OLRCK2
OSCLK2
SDOUT2
ILRCK
ISCLK
SDIN
OMCK
Hea
der
He
ade
r
Resistors
Hardware
Switches
Head
er
RMCK
USB Micro-
controller
I 2 C/SPI
OLRCK1
OSCLK1
SDOUT1
TDM_IN
Reset
Canned
Oscillator
H
eade
r
Reset
USB
MAY '10
DS692DB2
CDB8422