CS42324
Mute Control 3 (Output) - Active-low mute output can drive external circuitry to eliminate the
clicks and pops associated with any single-rail output. This pin will become a high-impedance out-
put during power-down mode or when an invalid MCLK to LRCK ratio is detected.
MUTEC3
13
VCMBUF (Output) - Internally buffered VCMDAC
VCMBUF
VCMDAC
14
15
DAC Common-Mode Voltage (Output) - Filter connections for the DAC internal quiescent refer-
ence voltage.
VA_H
16, 18 Analog High Voltage Power (Input) - Positive power for the internal output buffer section.
17 Analog Ground (Input) - Ground reference for high-voltage section.
GNDH
AOUT1A, AOUT1B 19, 20 DAC Analog Audio Outputs (Output) - The full-scale output level is specified in the DAC Analog
AOUT2A, AOUT2B 21, 22 Characteristics specification table.
AOUT3A, AOUT3B 23, 24
AIN5B, AIN5A
AIN4B, AIN4A
AIN3B, AIN3A
AIN2B, AIN2A
AIN1B, AIN1A
25, 26 Stereo Analog Inputs 1-5 (Input) - The full-scale input level is specified in the ADC Analog Char-
27, 28 acteristics specification table.
29, 30
31, 32
33, 34
RST
35 Reset (Input) - The device enters a low-power mode when this pin is driven low.
36 ADC Overflow (Output) - Indicates an ADC overflow condition is present.
OVFL
SDIN2
SDIN1
37 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
38
Master Clock 2 (Input) - Optional asynchronous clock source for the DAC’s delta-sigma modula-
tors.
MCLK2
LRCK2
39
Serial Port 2 Left/Right Clock (Input/Output) - Determines which channel, Left or Right, is cur-
rently active on the serial audio input data line.
40
SCLK2
VD
41 Serial Port 2 Serial Bit Clock (Input/Output) - Serial bit clock for serial audio interface 2.
42 Digital Power (Input) - Positive power for the internal digital section.
GND
43 Digital Ground (Input) - Ground reference for the internal digital section.
Digital Interface Power (Input) - Determines the required signal level for the control and serial
44 port interfaces as shown in “I/O Power Rails” on page 12. Refer to the“Recommended Operating
Conditions” on page 13 for appropriate voltages
VL
SDOUT
SCLK1
45 Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
46 Serial Port 1 Serial Bit Clock (Input/Output) - Serial bit clock for serial audio interface 1.
Serial Port 1 Left Right/Clock (Input/Output) - Determines which channel, Left or Right, is cur-
rently active on the serial audio output data line.
LRCK1
MCLK1
47
Master Clock 1 (Input) - Clock source for the ADC’s delta-sigma modulators. By default, this sig-
nal also clocks the DAC’s delta-sigma modulators.
48
DS721A6
11
CIRRUS [ CIRRUS LOGIC ]
