CDB4354 Datasheet, PDF (5/11 Pages) Cirrus Logic – Evaluation Board for the CS4354

2. BOARD CONNECTIONS AND SETTINGS
CDB4354
Board connections and settings are shown in Table 1 and Table 2 below.
CONNECTOR
+5 V - J2
GND - J1
S/PDIF INPUT - J16
S/PDIF INPUT - OPT1
Serial Audio Header Pin
Block - J6
AOUTA - J7
AOUTB - J8
INPUT/OUTPUT
Input
Input
Input
Input
Input
Output
SIGNAL PRESENT
+3.3 V power for the evaluation board
Ground connection from power supply
Digital audio interface input via coaxial cable
Digital audio interface input via optical cable
Input for master, serial, left/right clocks and serial data (MCLK, SCLK,
LRCK, and SDIN) - direct to CS4354
RCA line-level analog outputs
Table 1. System Connections
JUMPER PIN
BLOCK
J12
J4
J5
J9
J3
PURPOSE
Selects source of voltage
for the VL supply
Current measure for VL
Current measure for VA
CS8416 Manual Reset
CS4354 De-emphasis and
Internal Serial Clock Mode
Select
POSITION
pins [1, 2] shunted
*pins [2,3] shunted
not shunted
*shunted
not shunted
*shunted
not shunted
shunted
*not shunted
pins [1, 2] shunted
*pins [2, 3] shunted
not shunted
FUNCTION SELECTED
Voltage source is +5 V
Voltage source is +3.3 V
Voltage source is pin 2 of J12
When shunt is removed, the voltage can be measured
across a fixed resistance R2 to determine current.
When shunt is removed, the voltage can be measured
across a fixed resistance R3 to determine current.
CS8416 is held in reset as long as J9 is shunted
CS8416 uses the on-board automatic reset
Internal Serial Clock Mode, De-emphasis enabled
External Serial Clock Mode, De-emphasis disabled
Internal Serial Clock Mode, De-emphasis disabled
Table 2. CDB4354 Jumper Pin Block Settings
LED
+3.3V - D1
+5V - D2
VL - D4
S/PDIF - D10
FUNCTION
LED is illuminated when the +3.3 V supply is on (+3.3V is derived from the +5V supply by an on-board
regulator)
LED is illuminated when the +5 V supply is on
LED is illuminated when the VL supply is on (either by the onboard +3.3 V, +5 V or external supply)
LED is illuminated when the CS8416 reports a Receiver Error. See the CS8416 datasheet for a full
description of the error reporting functionality.
Table 3. LED Information
Note: All settings denoted by an asterisk (*) are the Factory Default Settings.
DS895DB1
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