1 pin description – Cirrus Logic CS4350 User Manual
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DS691F2
CS4350
1 PIN DESCRIPTION
Pin Name
#
Pin Description
VLC
5
Control Interface Power (Input) - Positive power for the hardware/software control interface
VD_FILT
6
Regulator Voltage (Output) - Filter connection for internal voltage regulator
GND
7, 19 Ground (Input) - Ground reference
RMCK
8
Recovered Master Clock (Output) - Outputs a master clock derived from LRCK
VLS
9
Serial Audio Interface Power (Input) - Positive power for the serial audio interface
SCLK
10
Serial Clock (Input) - Serial bit-clock for the serial audio interface
SDIN
11
Serial Audio Data Input (Input) - Input for two’s complement serial audio data
LRCK
12
Left/Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial
audio data line
TSTO
13
Test Output - These pins need to be floating and not connected to any trace or plane.
AOUTA+,-
AOUTB+,-
14, 15,
22, 23
Differential Analog Outputs (Output) - The full scale differential output level is specified in
log Characteristics - Commercial (-CZZ)” on page 8
.
AMUTEC
BMUTEC
16, 21 Mute Control (Output) - Control signals for optional mute circuit.
VBIAS
17
Positive Voltage Reference (Output) - Positive reference voltage for the internal DAC
VA
18
Analog Power (Input) - Positive power supply for the analog section
VQ
20
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage
DIF2(AD1/CDOUT)
RST
DEM(AD0/CS)
AOUTB-
DIF0(SDA/CDIN)
AOUTB+
DIF1(SCL/CCLK)
BMUTEC
VLC
VQ
VD_FILT
GND
GND
VA
RMCK
VBIAS+
VLS
AMUTEC
SCLK
AOUTA+
SDIN
AOUTA-
LRCK
TSTO
2
3
4
5
6
7
8
17
18
19
20
21
22
23
9
10
11
12
13
14
15
16
24
1