CS42435
1. PIN DESCRIPTIONS - SOFTWARE MODE
AGND
AIN4+
AIN3+
AIN2+
AIN2-
FILT+
TSTN
TSTN
TSTN
TSTN
AIN4-
AIN3-
VA
52 51 50 49 48 47 46 45 44 43 42 41 40
SCL/CCLK
SDA/CDOUT
AD0/CS
AD1/CDIN
RST
VLC
FS
VD
DGND
VLS
SCLK
MCLK
ADC_SDOUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20 21 22 23 24 25 26
AOUT1+
AUX_SCLK
AOUT2+
AOUT1-
AOUT2-
AOUT3-
AUX_LRCK
AUX_SDIN
DAC_SDIN
AOUT4+
AOUT4-
DGND
AOUT3+
39
38
37
36
35
AIN1+
AIN1-
VA
VQ
AGND
AOUT8-
AOUT8+
AOUT7+
AOUT7-
AOUT6-
AOUT6+
AOUT5+
AOUT5-
CS42435
34
33
32
31
30
29
28
27
Pin Name
SCL/CCLK
SDA/CDOUT
AD0/CS
AD1/CDIN
RST
VLC
FS
VD
DGND
VLS
SCLK
MCLK
ADC_SDOUT
DAC_SDIN
AUX_LRCK
#
1
2
3
4
5
6
7
8
9,18
10
11
12
13
14
15
Pin Description
Serial Control Port Clock
(Input) - Serial clock for the control port interface.
Serial Control Data I/O
(Input/Output) - Input/Output for I²C data. Output for SPI data.
Address Bit [0]/ Chip Select
(Input) - Chip address bit in I²C Mode. Control signal used to select
the chip in SPI Mode.
Address Bit [1]/ SPI Data Input
(Input) - Chip address bit in I²C Mode. Input for SPI data.
Reset
(Input) - The device enters a low-power mode and all internal registers are reset to their
default settings when low.
Control Port Power
(Input)
-
Determines the required signal level for the control port interface.
See
Frame Sync
(Input) - Signals the start of a new TDM frame in the TDM digital interface format.
Digital Power
(Input) - Positive power supply for the digital section.
Digital Ground
(Input) - Ground reference for the digital section.
Serial Port Interface Power
(Input) - Determines the required signal level for the serial port inter-
faces. See
Serial Clock
(Input)
- Serial clock for the serial audio interface. Input frequency must be 256 x Fs.
Master Clock
(Input) - Clock source for the delta-sigma modulators and digital filters.
Serial Audio Data Output
(Output)
- TDM output for two’s complement serial audio data.
DAC Serial Audio Data Input
(Input) - TDM Input for two’s complement serial audio data.
Auxiliary Left/Right Clock
(Output) - Determines which channel, Left or Right, is currently active
on the Auxiliary serial audio data line.
6
DS685F2
CIRRUS [ CIRRUS LOGIC ]
