CS43L22 Datasheet, PDF (8/68 Pages) Cirrus Logic – Low Power, Stereo DAC w/Headphone & Speaker Amps

Confidential Draft
10/7/08
CS43L22
AGND
FILT+
VQ
TSTO
AIN4A,B
AIN3A,B
AIN2A,B
AIN1A,B
AFILTA,AFILTB
SPKR/HP
RESET
VL
VD
DGND
MCLK
SCLK
SDIN
LRCK
GND/Thermal Pad
17 Analog Ground (Input) - Ground reference for the internal analog section.
18 Positive Voltage Reference (Output) - Filter connection for the internal sampling circuits.
19 Quiescent Voltage (Output) - Filter connection for the internal quiescent voltage.
20,36 Test Out (Output) - This pin is an output used for test purposes only and must be left “floating” (no
connection external to the pin).
21,22
23,24
25,26
Line-Level Analog Inputs (Input) - Single-ended stereo line-level analog inputs.
29,30
27,28 Anti-alias Filter Connection (Output) - Anti-alias filter connection for analog passthrough mode.
31 Speaker/Headphone Switch (Input) - Powers down the left and/or right channel of the speaker
and/or headphone outputs.
32 _{Reset (Input) - The device enters a low power mode when this pin is driven low.}
33 Digital Interface Power (Input) - Determines the required signal level for the serial audio inter-
face and host control port.
34 Digital Power (Input) - Positive power for the internal digital section.
35 Digital Ground (Input) - Ground reference for the internal digital section.
37 Master Clock (Input) - Clock source for the delta-sigma modulators.
38 Serial Clock (Input/Output) - Serial clock for the serial audio interface.
39 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
40 Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on
the serial audio data line.
- Ground reference for PWM power FETs and charge pump; thermal relief pad for optimized heat
dissipation.
1.1 I/O Pin Characteristics
Input and output levels and associated power supply voltage are shown in the table below. Logic levels
should not exceed the corresponding power supply voltage.
Power Pin Name I/O
Supply
VL
RESET
Input
SCL
Input
SDA
Input/
Output
MCLK
Input
LRCK
Input/
Output
SCLK
Input/
Output
SDIN
Input
VA
SPKR/HP Input
SPKR_OUTA+ Output
VP
SPKR_OUTA- Output
SPKR_OUTB+ Output
SPKR_OUTB- Output
Internal
Connections
-
-
-
-
Weak Pullup
(~1 MΩ)
Weak Pullup
(~1 MΩ)
-
-
-
-
-
-
Driver
-
-
1.65 V - 3.47 V, CMOS/Open
Drain
-
1.65 V - 3.47 V, CMOS
1.65 V - 3.47 V, CMOS
-
-
1.6 V - 5.25 V Power MOSFET
1.6 V - 5.25 V Power MOSFET
1.6 V - 5.25 V Power MOSFET
1.6 V - 5.25 V Power MOSFET
Receiver
1.65 V - 3.47 V, with Hysteresis
1.65 V - 3.47 V, with Hysteresis
1.65 V - 3.47 V, with Hysteresis
1.65 V - 3.47 V
1.65 V - 3.47 V
1.65 V - 3.47 V
1.65 V - 3.47 V
1.65 V - 2.63 V
-
-
-
-
8
DS792F1