IBM T860 9494-HWN, Service Manual

Page: 31 / 44

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GM5020 GENESIS 292P
74F08D 14P SOP TP QUAD 2-INPUT
Anolog
RGB
Serial I/F SDRAM/I/F
Triple
ADC
Host
Interface
Micro-
processor
Frame Store
Interface
OSD
Image
Caputure/
Measure.
ment
YUV to RGB
Converter
Frame Rate
Conversion
Control
Zoom/
Shrink/
Filter
Gamma
Control
Panel I/F
[48-bits]
Output
Control
Output
Data
Path/
Timing
Control
Brightness,
Contrast,
Hue,
Saturation
TMDS
RX
Video
YUV
[8-bits]
Digital
TMDS
Input
FUNCTIONAL BLOCK DIAGRAM
D0a
D3b
D3a
D2b
V
cc
D2a
D0b
D1a
D1b
GND
Q0
Q1
Q2
Q3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PIN CONFIGURATION
PIN FUNCTION
Frame Buffer
(SDRAM/SGRAM)
Output to
LCD
OSC or
XTAL
Micro-
controller
Video
Decoder
Anolog
RGB
Composite
S-Video
DVI
gm5020
SYSTEM BLOCK DIAGRAM
INPUT
Dna
L
L
H
H
L
H
L
H
L
L
L
H
Dnb Qn
OUTPUT