Pin Descriptions; Figure 1. Cs4244 Pinout - Cirrus Logic CDB4244 Manual

1. PIN DESCRIPTIONS

Pin Name Pin #
SDA 1 Serial Control Data (Input/Output) - Bi-directional data I/O for the I²C control port.
SDINx 2,3 Serial Data Input (Input) - Input channels serial audio data.
Frame Synchronization Clock/Left/Right Clock (Input/Output) - Determines which channel or
FS/LRCK 4
frame is currently active on the serial audio data line.
MCLK 5 Master Clock (Input) -Clock source for the internal logic, processing, and modulators.
SCLK 6 Serial Clock (Input/Output) -Serial Clock for the serial data port.
Serial Data Output 1 (Output) - ADC data output into a multi-slot TDM stream or AIN1 and AIN2
SDOUT1 7
ADC data output in Left Justified and I²S modes.
VL 8 Interface Power (Input) - Positive power for the digital interface level shifters.
GND 9,21
Ground (Input) - Ground reference for the I/O and digital, analog sections.
VDREG 10 Digital Power (Output) - Internally generated positive power supply for digital section.
Positive Analog Input (Input) - Positive input signals to the internal analog to digital converters.
11,13,15,
AINx+ The full scale analog input level is specified in the Analog Input Characteristics tables on pages
17
and 12.
Negative Analog Input (Input) - Negative input signals to the internal analog to digital converters.
12,14,16,
AINx- The full scale analog input level is specified in the Analog Input Characteristics tables on pages
18
and 12.
FILT+ 19 Positive Voltage Reference (Output) - Positive reference voltage for the internal ADCs.
DS900PP2
SDA
1
SDIN1
2
SDIN2 3
FS/LRCK
4
MCLK
5
(Though Package)
SCLK
6
SDOUT1
7
VL
8
GND
9
VDREG
10

Figure 1. CS4244 Pinout

Top-Down
View
Pin Description
CS4244
AOUT2+
30
AOUT2-
29
AOUT3+
28
AOUT3-
27
AOUT4+
26
AOUT4-
25
VBIAS
24
VREF
23
VQ
22
GND
21
11
11
5