System Connections And Jumpers; Table 1. System Connections - Cirrus Logic CDB42L55 Manual

5 SYSTEM CONNECTIONS AND JUMPERS

CONNECTOR
EXT. +5V
GND
Ext. Input
GND
AAA
RS232
USB I/O
SPDIF Optical IN
SPDIF Optical OUT
SPDIF COAX IN
SPDIF COAX OUT
MICRO RESET
CS42L55 RESET
FPGA Program
FPGA JTAG
MICRO JTAG
AP PSIA Transmitter
AP PSIA Receiver
MCLK
SCLK
LRCK
ADC.SDOUT
DAC.SDIN
AIN1B
AIN1A
AIN2B
AIN2A
HP Channel A
HP Channel B
Line Channel A
Line Channel B
HP Stereo Connection
Oscillator
I/O Header
S/W CONTROL
DS773DB1
REF INPUT/OUTPUT
TP9 Input
TP10 Input
TP6 Input
TP7 Input
BT1 Input
BT2 Input
BT3 Input
J95 Input/Output
J94 Input/Output
OPT3 Input
OPT2 Output
J61 Input
J68 Output
S4 Input
S1 Input
S2 Input
J75 Input/Output
J110 Input/Output
J78 Input
J40 Output
J77 Input/Output
J42 Input/Output
J45 Input/Output
J46 Output
J47 Input
J8 Input
J6 Input
J14 Input
J10 Input
J38 Output
J37 Output
J15 Output
J17 Output
J1 Output
Y1 Input
J104 Input/Output
J109 Intput/Output

Table 1. System Connections

SIGNAL PRESENT
+5V power supply
GND reference
+4.5V external power supply for U4 buck regulator
GND reference
Socket for +1.5 V AAA batteries
RS232 serial port connection to PC
USB connection to PC for I²C control port signals
CS8416 digital audio input via optical cable
CS8406 digital audio output via optical cable
CS8416 digital audio input via coaxial cable
CS8406 digital audio input via coaxial cable
Reset for microcontroller (U84)
Reset for CS42L55 (U1)
Reload Xilinx program into the FPGA from Flash (U14)
I/O for programming the FPGA (U5)
I/O for programming the microcontroller (U84)
Digital Outputs to CS42L55 (typically derived from an Audio Precision Pro-
grammable Serial Interface Adapter)
Digital I/O from CS42L55 (typically derived from an Audio Precision Pro-
grammable Serial Interface Adapter)
Buffered Digital I/O Interface to CS42L55
RCA connectors for analog inputs to CS42L55
RCA connector for headphone analog output from CS42L55
RCA connector for line analog output from CS42L55
Stereo jack for headphone stereo output from CS42L55
Oscillator for providing master clock for system timing
Unbuffered Digital I/O Interface to CS42L55
I/O bus for external I²C control port signals
CDB42L55
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