CS42438 Datasheet, PDF (6/64 Pages) Cirrus Logic – 108 dB, 192 kHz 6-in, 8-out TDM CODEC

1 PIN DESCRIPTION - SOFTWARE MODE
SCL/CCLK
SDA/CDOUT
AD0/CS
AD1/CDIN
RST
VLC
FS
VD
DGND
VLS
SCLK
MCLK
ADC_SDOUT
52 51 50 49 48 47 46 45 44 43 42 41 40
1
39
2
38
3
37
4
36
5
35
6
7
CS42438
34
33
8
32
9
31
10
30
11
29
12
28
13
27
14 15 16 17 18 19 20 21 22 23 24 25 26
AIN1+
AIN1-
VA
VQ
AGND
AOUT8-
AOUT8+
AOUT7+
AOUT7-
AOUT6-
AOUT6+
AOUT5+
AOUT5-
Pin Name
SCL/CCLK
SDA/CDOUT
AD0/CS
AD1/CDIN
RST
VLC
FS
VD
DGND
VLS
SCLK
MCLK
ADC_SDOUT
DAC_SDIN
AUX_LRCK
# Pin Description
1 Serial Control Port Clock (Input) - Serial clock for the control port interface.
2 Serial Control Data I/O (Input/Output) - Input/Output for I²C data. Output for SPI data.
3 Address Bit [0]/ Chip Select (Input) - Chip address bit in I²C Mode. Control signal used to select
the chip in SPI mode.
4 Address Bit [1]/ SPI Data Input (Input) - Chip address bit in I²C Mode. Input for SPI data.
5 Reset (Input) - The device enters a low power mode and all internal registers are reset to their
default settings when low.
6 Control Port Power (Input) - Determines the required signal level for the control port interface.
See “Digital I/O Pin Characteristics” on page 7.
7 Frame Sync (Input) - Signals the start of a new TDM frame in the TDM digital interface format.
8 Digital Power (Input) - Positive power supply for the digital section.
9,18 Digital Ground (Input) -
10 Serial Port Interface Power (Input) - Determines the required signal level for the serial port inter-
faces. See “Digital I/O Pin Characteristics” on page 7.
11 Serial Clock (Input) - Serial clock for the serial audio interface. Input frequency must be 256xFs.
12 Master Clock (Input) - Clock source for the delta-sigma modulators and digital filters.
13 Serial Audio Data Output (Output) - TDM output for two’s complement serial audio data.
14 DAC Serial Audio Data Input (Input) - TDM Input for two’s complement serial audio data.
15 Auxiliary Left/Right Clock (Output) - Determines which channel, Left or Right, is currently active
on the Auxiliary serial audio data line.
6
DS646PP2