System connections and jumpers, Table 3. system connections – Cirrus Logic CDB53L21 User Manual
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DS700DB1
CDB53L21
5. SYSTEM CONNECTIONS AND JUMPERS
CONNECTOR
REF
INPUT/OUTPUT
SIGNAL PRESENT
+5V
J26
Input
+5.0 V Power Supply.
GND
J27
Input
Ground Reference .
RS232
J95
Input/Output
Serial connection to PC for SPI / I²C control port signals.
USB
J94
Input/Output
USB connection to PC for SPI / I²C control port signal.
S/PDIF OPTICAL
OUT
OPT2
Output
CS8406 digital audio output via optical cable.
S/PDIF COAX OUT
J68
Output
CS8406 digital audio output via coaxial cable.
I/O Header
J5
Input/Output
I/O for Clocks & Data.
S/W CONTROL
J109
Input/Output
I/O for external SPI / I²C control port signals.
MICRO JTAG
J110
Input/Output
I/O for programming the micro controller (U84).
FPGA JTAG
J78
Input/Output
I/O for programming the FPGA (U14).
MICRO RESET
S4
Input
Reset for the micro controller (U84).
FPGA PROGRAM
S2
Input
Reload Xilinx Flash program into the FPGA (U14).
H/W BOARD RESET
S1
Input
Reset for the CS53L21 (U1).
LINEB
LINEA
J62
J7
Input
RCA phono jacks for analog input signal to CS53L21.
MIC1
MIC2
J35
J51
Input
Microphone jacks for analog input signal to CS53L21.
Table 3. System Connections