CS42L51_07 Datasheet, PDF (8/88 Pages) Cirrus Logic – Low Power, Stereo CODEC with Headphone Amp

CS42L51
AOUTB
AOUTA
VA
AGND
DAC_FILT+
VQ
ADC_FILT+
MICIN1/
AIN3A
MICIN2/
BIAS/AIN3B
AIN2A
AIN2B/BIAS
AFILTA
AFILTB
AIN1A
AIN1B
RESET
VL
VD
DGND
SDOUT
(M/S)
MCLK
SCLK
SDIN
Thermal Pad
10 _{Analog Audio Output (Output) - The full-scale output level is specified in the DAC Analog Characteris-}
11 _{tics specification table}
12 _{Analog Power (Input) - Positive power for the internal analog section.}
13 Analog Ground (Input) - Ground reference for the internal analog section.
14 _{Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.}
15 _{Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.}
16 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
17 ^{Microphone Input 1 (Input) - The full-scale level is specified in the ADC Analog Characteristics specifi-}
cation table.
Microphone Input 2 (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics
18 specification table. This pin can also be configured as an output to provide a low noise bias supply for an
external microphone. Electrical characteristics are specified in the DC Electrical Characteristics table.
19 ^{Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification}
table.
Analog Input (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics specifi-
20 _{cation table. This pin can also be configured as an output to provide a low noise bias supply for an exter-}
nal microphone. Electrical characteristics are specified in the DC Electrical Characteristics table.
21
22 ^{Filter Connection (Output) - Filter connection for the ADC inputs.}
23 _{Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification}
24 _table.
25 _{Reset (Input) - The device enters a low power mode when this pin is driven low.}
26 ^{Digital Interface Power (Input) - Determines the required signal level for the serial audio interface and}
host control port. Refer to the Recommended Operating Conditions for appropriate voltages.
27 Digital Power (Input) - Positive power for the internal digital section.
28 _{Digital Ground (Input) - Ground reference for the internal digital section.}
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
29 _{Serial Port Master/Slave (Input/Output) - Hardware Mode Startup Option: Selects between Master and}
Slave Mode for the serial port.
30 Master Clock (Input) - Clock source for the delta-sigma modulators.
31 _{Serial Clock (Input/Output) - Serial clock for the serial audio interface.}
32 _{Serial Audio Data Input (Input) - Input for two’s complement serial audio data.}
- _{Thermal relief pad for optimized heat dissipation. See “QFN Thermal Pad” on page 81.}
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