CS4349
1. PIN DESCRIPTION
DIF2(AD1/CDOUT)
DEM(AD0/CS)
DIF0(SDA/CDIN)
DIF1(SCL/CCLK)
VLC
RST
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
16
15
14
13
TSTO
AOUTB
BMUTEC
VQ
VD_FILT
GND
GND
VA
POPGUARD(TSTO)
VLS
VBIAS
AMUTEC
AOUTA
TSTO
TSTO
9
10
SCLK
SDIN
11
12
LRCK
#
Pin Name
VLC
Pin Description
5
6
Control Interface Power (Input) - Positive power for the hardware/software control interface
Regulator Voltage (Output) - Filter connection for internal voltage regulator
VD_FILT
GND
7, 19 Ground (Input) - Ground reference
Serial Audio Interface Power (Input) - Positive power for the serial audio interface
VLS
9
SCLK
SDIN
10 Serial Clock (Input) - Serial bit-clock for the serial audio interface
11 Serial Audio Data Input (Input) - Input for two’s complement serial audio data
Left/Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial
audio data line
LRCK
TSTO
TSTO
12
13 Test Output (Output) - This pin needs to be floating and not connected to any trace or plane.
14
23
Test Output (Output) - These pins need to be floating and not connected to any trace or plane.
AOUTA
AOUTB
15 Analog Outputs (Output) - The full-scale output level is specified in “DAC Analog Characteristics -
22 Commercial (-CZZ)” on page 9.
16
21
AMUTEC
BMUTEC
Mute Control (Output) - Control signals for optional mute circuit
VBIAS
VA
17 Positive Voltage Reference (Output) - Positive reference voltage for the internal DAC
18 Analog Power (Input) - Positive power supply for the analog section
VQ
20 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage
Reset (Input) - When pulled low, device will power down and reset all internal registers to their default
settings.
24
RST
6
DS782F1
CIRRUS [ CIRRUS LOGIC ]
