CS4954-CQ View Datasheet(PDF) - Cirrus Logic
Part Name
Description
Manufacturer
CS4954-CQ Datasheet PDF : 56 Pages
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CS4954 CS4955
Pin Name
V [7:0]
CLK
PADDR
XTAL_IN
XTAL_OUT
HSYNC/CB
VSYNC
FIELD/CB
RD
WR
PDAT [7:0]
SDA
SCL
CVBS
Y
C
R
G
B
VREF
ISET
TTXDAT
TTXRQ
INT
RESET
TEST
VAA
GNDD
VDD
GNDA
Pin Number
8, 7, 6, 5, 4, 3, 2, 1
29
16
15
14
10
Type
IN
IN
IN
IN
OUT
I/O
Description
Digital video data inputs
27 MHz input clock
Address enable line
subcarrier crystal input
subcarrier crystal output
Active low horizontal sync, or composite blank signal
11
I/O
Active low vertical sync.
9
OUT Video field ID. Selectable polarity or composite blank
27
IN
Host parallel port read strobe, active low
28
IN
Host parallel port write strobe, active low
19, 20, 21, 22, 23, 24, 25, 26
32
33
44
48
47
39
40
43
38
37
30
31
12
34
I/O
I/O
IN
CURRENT
CURRENT
CURRENT
CURRENT
CURRENT
CURRENT
I/O
CURRENT
IN
OUT
OUT
IN
Host parallel port/ general purpose I/O
I2C data
I2C clock input
Composite video output
Luminance analog output
Chrominance analog output
Red analog output
Green analog output
Blue analog output
Internal voltage reference output or external refer-
ence input
DAC current set
Teletext data input
Teletext request output
Interrupt output, active high
Active low master RESET
13
36, 41, 46
18
17
35, 42, 45
IN
TEST pin. Ground for normal operation
PS
+ 5 V or + 3.3 V supply (must be same as VDD)
PS
Ground
PS
+5 V or 3.3 V supply (must be same as VAA)
PS
Ground
Table 10. Device Pin Descriptions
54
DS278PP4
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