Cirrus Logic CS4350 - Manual (Page 6)

6 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 “DAC Ana-
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