System connections, Table 3. system connections, Jumper settings – Cirrus Logic CDB43L21 User Manual
Page 14: Table 4. jumper settings, System connections 5. jumper settings, System
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DS723DB1
CDB43L21
4. SYSTEM CONNECTIONS
5. JUMPER SETTINGS
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 signals
S/PDIF OPTICAL IN
OPT1
Input
CS8415 digital audio input via optical cable
S/PDIF COAX IN
J61
Input
CS8415 digital audio input 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 CS43L21 (U1)
LEFT
RIGHT
J19
J20
Output
RCA phono jacks for analog outputs
SPEAKER +
SPEAKER -
J72
J73
Output
Binding Post connected to LM4889 speaker driver for analog out-
puts
Headphone Jack
J11
Output
Headphone jack for analog outputs
Table 3. System Connections
JMP
LABEL
PURPOSE
POSITION
FUNCTION SELECTED
J31
VL
Selects source of voltage for
the VL supply *
(Note 1)
*+1.8 V
Voltage source is +1.8 V regulator
+2.5 V
Voltage source is +2.5 V regulator
+3.3 V
Voltage source is +3.3 V regulator
J36
VA_HP
Selects source of voltage for
the VA_HP supply
*+1.8 V
Voltage source is +1.8 V regulator
+2.5 V
Voltage source is +2.5 V regulator
J25
VA
Selects source of voltage for
the VA supply
*+1.8 V
Voltage source is +1.8 V regulator
+2.5 V
Voltage source is +2.5 V regulator
J28
VD
Selects source of voltage for
the VD supply
*+1.8 V
Voltage source is +1.8 V regulator
+2.5 V
Voltage source is +2.5 V regulator
J52
J48
J47
J53
VL
+VA_HP
VA
VD
Current Measurement
*SHUNTED
1
Ω series resistor is shorted
OPEN
1
Ω series resistor in power supply path
J6
Left
Channel
Selects between filtered and
non-filtered output
*AOUTA
Connects AOUTA of part directly to LEFT RCA jack
AOUTA (LPF) Connects low-pass filtered AOUTA to LEFT RCA jack
J4
Right
Channel
Selects between filtered and
non-filtered output
*AOUTB
Connects AOUTB of part directly to RIGHT RCA jack
AOUTB (LPF) Connects lowpass filtered AOUTA to RIGHT RCA jack
J10
16 ohm
HP LOAD
Load Simulation
SHUNTED
16
Ω resistor shunted from AOUTA to GND
*Not con-
nected
Jumper placed on pin 1
J13
16 ohm
HP LOAD
Load Simulation
SHUNTED
16
Ω resistor shunted from AOUTB to GND
*Not con-
nected
Jumper placed on pin 1
*Default factory settings
Notes:
1.
regarding jumper settings for J31.
Table 4. Jumper Settings