CS4245 Datasheet, PDF (6/54 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC

CS4245
AIN2A
AIN2B
9, Stereo Analog Input 2 (Input) - The full scale level is specified in the ADC Analog Characteristics
10 specification table.
AIN1A
AIN1B
11, Stereo Analog Input 1 (Input) - The full scale level is specified in the ADC Analog Characteristics
12 specification table.
AGND
13 Analog Ground (Input) - Ground reference for the internal analog section.
VA
14 Analog Power (Input) - Positive power for the internal analog section.
AFILTA
15 Antialias Filter Connection (Output) - Antialias filter connection for the channel A ADC input.
AFILTB
16 Antialias Filter Connection (Output) - Antialias filter connection for the channel B ADC input.
VQ1
17 Quiescent Voltage 1 (Output) - Filter connection for the internal quiescent reference voltage.
VQ2
18 Quiescent Voltage 2 (Output) - Filter connection for the internal quiescent reference voltage.
FILT1+
19 Positive Voltage Reference 1 (Output) - Positive reference voltage for the internal sampling circuits.
FILT2+
20 Positive Voltage Reference 2 (Output) - Positive reference voltage for the internal sampling circuits.
AIN4A/MICIN1 21, Stereo Analog Input 4 / Microphone Input 1 & 2 (Input) - The full scale level is specified in the ADC
AIN4B/MICIN2 22 Analog Characteristics specification table.
AIN5A
AIN5B
23, Stereo Analog Input 5 (Input) - The full scale level is specified in the ADC Analog Characteristics
24 specification table.
MICBIAS
25
Microphone Bias Supply (Output) - Low noise bias supply for external microphone. Electrical charac-
teristics are specified in the DC Electrical Characteristics specification table.
AIN6A
AIN6B
26, Stereo Analog Input 6 (Input) - The full scale level is specified in the ADC Analog Characteristics
27 specification table.
AUXOUTA
AUXOUTB
28, Auxiliary Analog Audio Output (Output) - Analog output from either the DAC, the PGA block, or high
29 impedance. See “Auxiliary Output Source Select (Bits 6:5)” on page 43.
VA
30 Analog Power (Input) - Positive power for the internal analog section.
AGND
31,
32
Analog Ground (Input) - Ground reference for the internal analog section.
AOUTA
AOUTB
33, DAC Analog Audio Output (Output) - The full scale output level is specified in the DAC Analog Char-
34 acteristics specification table.
MUTEC
35
Mute Control (Output) - This pin is active during power-up initialization, reset, muting, when master
clock to left/right clock frequency ratio is incorrect, or power-down.
VLS
36 ^{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.
SDIN
37 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
SCLK2
38 Serial Port 2 Serial Bit Clock (Input/Output) - Serial bit clock for serial audio interface 2.
LRCK2
39
Serial Port 2 Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently
active on the serial audio input data line.
MCLK2
40
Master Clock 2 (Input/Output) -Optional asynchronous clock source for the DAC’s delta-sigma modu-
lators.
SDOUT
41 Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
SCLK1
42 Serial Port 1 Serial Bit Clock (Input/Output) - Serial bit clock for serial audio interface 1.
LRCK1
43
Serial Port 1 Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently
active on the serial audio output data line.
6