Cs4385a – Cirrus Logic CS4385A User Manual
Page 7
DS837F2
7
CS4385A
AOUTA1 +,-
AOUTB1 +,-
AOUTA2 +,-
AOUTB2 +,-
AOUTA3 +,-
AOUTB3 +,-
AOUTA4 +,-
AOUTB4 +,-
39, 40
38, 37
35, 36
34, 33
29, 30
28, 27
25, 26
24, 23
Differential Analog Output (Output) - The full-scale differential analog output level is specified in the
Analog Characteristics specification table.
VA
32
Analog Power (Input) - Positive power supply for the analog section. Refer to the Recommended
Operating Conditions for appropriate voltages.
VLS
43
Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio inter-
face. Refer to the Recommended Operating Conditions for appropriate voltages.
Software Mode Definitions
SCL/CCLK
15
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.
SDA/CDIN
16
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. CDIN is the
input data line for the control port interface in SPI™ Mode.
AD0/CS
17
Address Bit 0 (I²C) / Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C Mode; CS is the chip
select signal for SPI format.
TST
10, 12
Test (Input) - These pins are not used in Software Mode and should not be left floating (connect to
ground).
Hardware Mode Definitions
M0
M1
M2
M3
M4
17
16
15
12
10
Mode Selection (Input) - Determines the operational mode of the device as detailed in
and
.
DSD Definitions
DSD_SCLK
42
DSD Serial Clock (Input) - Serial clock for the Direct Stream Digital audio interface.
DSDA1
DSDB1
DSDA2
DSDB2
DSDA3
DSDB3
DSDA4
DSDB4
3
2
1
48
47
46
45
44
Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data.
Pin Name
#
Pin Description