CS4265 Datasheet, PDF (6/53 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Stereo Audio CODEC

CS4265
MICBIAS
16
Microphone Bias (Output) - Low noise bias supply for external microphone. Electrical characteristics
are specified in the DC Electrical Characteristics table.
VA
17 Analog Power (Input) - Positive power for the internal analog section.
AGND
18 Analog Ground (Input) - Ground reference for the internal analog section.
AOUTA
AOUTB
19, Analog Audio Output (Output) - The full scale output level is specified in the DAC Analog Characteris-
20 tics specification table.
MUTEC
21
Mute Control (Output) - This pin is active during power-up initialization, reset, muting, when master
clock left/right clock frequency ratio is incorrect, or power-down.
VLS
22
Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio inter-
face. Refer to the Recommended Operating Conditions for appropriate voltages.
TXSDIN
23 Transmitter Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
SDIN2
24 Serial Audio Data Input 2 (Input) - Input for two’s complement serial audio data.
SDIN1
25 Serial Audio Data Input 1 (Input) - Input for two’s complement serial audio data.
SDOUT
26 Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
SCLK
27 Serial Clock (Input/Output) - Serial clock for the serial audio interface.
LRCK
28
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
MCLK
29 Master Clock (Input) -Clock source for the delta-sigma modulators.
DGND
30 Digital Ground (Input) - Ground reference for the internal digital section.
VD
31 Digital Power (Input) - Positive power for the internal digital section.
TXOUT
32 Transmitter Line Driver Output (Output) - IEC60958-3 driver output.
Thermal Pad - Thermal Pad - Thermal relief pad for optimized heat dissipation.
6
DS657A2