CS4922
8 PIN DESCRIPTIONS
CDIN
SCK/SCL
REQ
SDA/CDOUT
TX
CS
VD4
DGND4
RESET
BOOT
DGND1
VD1
AUXOUT
AUXIN
AUXLR
AUXCLK
DBCLK
DBDA
7
8
AOUTR
6
4
2
1 44
42
40
39
38
AOUTL
AOUTM
AGND2
NC
VA+
AGND1
NC
FLT
PIO
EXTCK
ALTCLK
CLKIN
DGND3
VD3
CLKOUT
FSYNC
9
10
11
12
37
CS4922
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36
35
34
13
14
15
16
33
32
31
30
XF4
XF3
17
18
20
22
24
26
28
29
XF2
VD2
DGND2
90_CLK
XF1
SDATA
SCLK
Power Supplies
VD1, VD2, VD3, VD4 - Positive Digital Power Supply, PINS 7, 17, 25, 43.
The +5V supply is connected to these pins to power the various digital subcircuits on the chip.
See decoupling section in this data sheet for decoupling recommendations.
DGND1, DGND2, DGND3, DGND4 - Digital Ground, PINS 6, 18, 26, 42.
Digital power supply ground.
VA+ - Positive Analog Power Supply, PIN 34.
The analog +5V supply for the analog-to-digital converter and the PLL. Analog performance is
highly dependent on the quality of this supply. See decoupling section in this data sheet for
decoupling recommendations.
AGND1, AGND2 - Analog Ground, PIN 33, 36.
Analog power supply ground.
27
CIRRUS [ CIRRUS LOGIC ]
