Cirrus Logic CDB42L55 - Manual (Page 17)

DS773DB1 17
CDB42L55
5 SYSTEM CONNECTIONS AND JUMPERS
CONNECTOR REF INPUT/OUTPUT SIGNAL PRESENT
EXT. +5V TP9 Input +5V power supply
GND TP10 Input GND reference
Ext. Input TP6 Input +4.5V external power supply for U4 buck regulator
GND TP7 Input GND reference
AAA BT1
BT2
BT3 Input
Input
Input Socket for +1.5 V AAA batteries
RS232 J95 Input/Output RS232 serial port connection to PC
USB I/O J94 Input/Output USB connection to PC for I²C control port signals
SPDIF Optical IN OPT3 Input CS8416 digital audio input via optical cable
SPDIF Optical OUT OPT2 Output CS8406 digital audio output via optical cable
SPDIF COAX IN J61 Input CS8416 digital audio input via coaxial cable
SPDIF COAX OUT J68 Output CS8406 digital audio input via coaxial cable
MICRO RESET S4 Input Reset for microcontroller (U84)
CS42L55 RESET S1 Input Reset for CS42L55 (U1)
FPGA Program S2 Input Reload Xilinx program into the FPGA from Flash (U14)
FPGA JTAG J75 Input/Output I/O for programming the FPGA (U5)
MICRO JTAG J110 Input/Output I/O for programming the microcontroller (U84)
AP PSIA Transmitter J78 Input Digital Outputs to CS42L55 (typically derived from an Audio Precision Pro-
grammable Serial Interface Adapter)
AP PSIA Receiver J40 Output Digital I/O from CS42L55 (typically derived from an Audio Precision Pro-
grammable Serial Interface Adapter)
MCLK
SCLK
LRCK
ADC.SDOUT
DAC.SDIN
J77
J42
J45
J46
J47 Input/Output
Input/Output
Input/Output
Output
Input
Buffered Digital I/O Interface to CS42L55
AIN1B
AIN1A
AIN2B
AIN2A J8
J6
J14
J10
Input
Input
Input
Input RCA connectors for analog inputs to CS42L55
HP Channel A
HP Channel B J38
J37 Output
Output RCA connector for headphone analog output from CS42L55
Line Channel A
Line Channel B J15
J17 Output
Output RCA connector for line analog output from CS42L55
HP Stereo Connection J1 Output Stereo jack for headphone stereo output from CS42L55
Oscillator Y1 Input Oscillator for providing master clock for system timing
I/O Header J104 Input/Output Unbuffered Digital I/O Interface to CS42L55
S/W CONTROL J109 Intput/Output I/O bus for external I²C control port signals
Table 1. System Connections