CS4245_07 Datasheet, PDF (8/57 Pages) Cirrus Logic – 104 dB, 24-Bit, 192 kHz Stereo Audio CODEC

CS4245
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
AIN4B/MICIN2
21, 22
Stereo Analog Input 4 / Microphone Input
Analog Characteristics specification table.
1
&
2 (Input) -
The
full-scale
level is specified
in
the ADC
AIN5A
AIN5B
23, 24
Stereo Analog Input 5
specification table.
(Input) - The full-scale
level is specified
in
the ADC
Analog
Characteristics
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, 27
Stereo Analog Input 6
specification table.
(Input) - The
full-scale
level is specified
in
the ADC
Analog
Characteristics
AUXOUTA
AUXOUTB
28, 29
Auxiliary Analog Audio Output (Output) - Analog output from either the DAC, the
impedance. See “Auxiliary Output Source Select (Bits 6:5)” on page 45.
PGA block, or high
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, 34
DAC Analog Audio Output (Output) - The full-scale output level
acteristics specification table.
is
specified in the
DAC Analog
Char-
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) - Optional asynchronous clock source for the DAC’s delta-sigma modulators.
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.
MCLK1
44
Master Clock 1 (Input) - Clock source for the ADC’s delta-sigma modulators. By default, this signal
also clocks the DAC’s delta-sigma modulators.
DGND
45 Digital Ground (Input) - Ground reference for the internal digital section.
VD
46 Digital Power (Input) - Positive power for the internal digital section.
INT
47 Interrupt (Output) - Indicates an interrupt condition has occurred.
OVFL
48 ADC Overflow (Output) - Indicates an ADC overflow condition is present.
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DS656F2