CS42426
2. PIN DESCRIPTIONS
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
DAC_SDIN1
DAC_SCLK
DAC_LRCK
VD
1
2
3
4
5
6
7
8
9
48 GPO1
47 GPO2
46 GPO3
45 GPO4
DGND
44 GPO5
VLC
43 GPO6
SCL/CCLK
SDA/CDOUT
AD1/CDIN
42 GPO7
41 VA
CS42426
40 AGND
39 LPFLT
38 MUTEC
37 AOUTA1-
36 AOUTA1+
35 AOUTB1+
34 AOUTB1-
33 AOUTA2-
AD0/CS 10
INT 11
RST 12
AINR- 13
AINR+ 14
AINL+ 15
AINL- 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Pin Name
#
Pin Description
1
64
63
DAC_SDIN1
DAC_SDIN2
DAC_SDIN3
DAC Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
DAC Serial Clock (Input/Output) - Serial clock for the DAC serial audio interface.
2
DAC_SCLK
DAC Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on
the DAC serial audio data line.
3
DAC_LRCK
4
51
VD
Digital Power (Input) - Positive power supply for the digital section.
5
52
DGND
Digital Ground (Input) - Ground reference. Should be connected to digital ground.
Control Port Power (Input) - Determines the required signal level for the control port.
6
VLC
Serial Control Port Clock (Input) - Serial clock for the serial control port. Requires an external pull-up
resistor to the logic interface voltage in I²C mode as shown in the Typical Connection Diagram.
7
SCL/CCLK
Serial Control Data (Input/Output) - SDA is a data I/O line in I²C mode and requires an external pull-up
resistor to the logic interface voltage, as shown in the Typical Connection Diagram. CDOUT is the output
data line for the control port interface in SPI mode.
8
9
SDA/CDOUT
AD1/CDIN
Address Bit 1 (I²C)/Serial Control Data (SPI) (Input) - AD1 is a chip address pin in I²C mode; CDIN is
the input data line for the control port interface in SPI mode.
Address Bit 0 (I²C)/Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C mode; CS
is the chip select signal in SPI mode.
10
11
AD0/CS
INT
Interrupt (Output) - The CS42426 will generate an interrupt condition as per the Interrupt Mask register.
See “Interrupts” on page 37 for more details.
16
DS604F1
CIRRUS [ CIRRUS LOGIC ]
