CRD42L51 Cirrus Logic Inc, CRD42L51 Datasheet - Page 8

• Manufacturer Part Number: CRD42L51
• Description: Ref Bd Low-voltage Stereo Codec
• Manufacturer: Cirrus Logic Inc

8
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
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
11
-
Analog Audio Output (Output) - The full-scale output level is specified in the DAC Analog Characteris-
tics specification table
Analog Power (Input) - Positive power for the internal analog section.
Analog Ground (Input) - Ground reference for the internal analog section.
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
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
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.
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-
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.
Filter Connection (Output) - Filter connection for the ADC inputs.
Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification
table.
Reset (Input) - The device enters a low power mode when this pin is driven low.
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.
Digital Power (Input) - Positive power for the internal digital section.
Digital Ground (Input) - Ground reference for the internal digital section.
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
Serial Port Master/Slave (Input/Output) - Hardware Mode Startup Option: Selects between Master and
Slave Mode for the serial port.
Master Clock (Input) - Clock source for the delta-sigma modulators.
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
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.
CS42L51
DS679F1