CDB8422
4. SYSTEM CONNECTIONS
CONNECTOR
+5V
GND
USB I/O
RX0
RX1
RX2
RX3
RX0
RX1
RX2
RX3
AES/EBU INPUT
OPTICAL OUT
COAX OUT
Input Serial Port Header
Output Serial Port 1
REF
J2
J3
J37
J1
J5
J10
J15
J7
J6
J12
J16
J19
J28
J27
J22
J24
INPUT/OUTPUT
Input
Input
Input/Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Output
Input/Output
Input/Output
SIGNAL PRESENT
+5 V Power Supply
Ground Reference
USB connection to PC for I2C or SPI control port signals
CS8422 digital audio input via optical cable
CS8422 digital audio input via coaxial cable
CS8422 digital audio input via XLR cable
CS8406 digital audio output via optical cable
CS8406 digital audio output via coaxial cable
I/O for Clocks & Data to/from the CS8422’s input serial port
I/O for Clocks & Data to/from the CS8422’s output serial port 1
Header
Output Serial Port 2
J25
Input/Output
I/O for Clocks & Data to/from the CS8422’s output serial port 2
Header
TDM Input Header
SPI/I2C
C2
FPGA JTAG
BOARD RESET
FPGA PROGRAM
MS SEL
SAOF
HW CONFIG
J30
J26
J36
J69
S5
S1
S3
S4
S7
Input/Output
Input/Output
Input/Output
Input/Output
Input
Input
Input
Input
Input
I/O for Clocks & Data to/from the CS8422’s TDM input
I/O for external I2C or SPI control port signals
I/O for programming the micro controller (U46)
I/O for programming the FPGA (U58)
Reset for the CDB8422
Reload Xilinx program into the FPGA from Flash (U57)
Selects master/slave mode and clock ratio settings for the serial
output ports of the CS8422 in hardware mode (see Section 3.3 )
Selects data format for the serial output ports of the CS8422 in
hardware mode (see Section 3.3 )
Misc. control of the CS8422 in hardware mode (see Section 3.3 )
Table 6. System Connections
28
DS692DB2
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