Video Memory; Video; External Crt Resolution Support; Video Ram Configuration - Acer Extensa 61X Service Manual

1.4.10

Video Memory

Table 1-15

Video RAM Configuration

DRAM or VRAM
Fixed or upgradeable
Memory size/configuration
Memory speed
Memory voltage
Memory package
1.4.11

Video

Table 1-16

Video Hardware Specification

Item
Video chip
Working voltage
Video Chip substitutability
1.4.11.1

External CRT Resolution Support

Table 1-17

Supported External CRT Resolutions

Resolution x Color on
External CRT
640x480x16
640x480x256
640x480x65,536
640x480x16,777,216
800x600x16
800x600x256
800x600x65,536
1024x768x16
Table 1-17 Supported External CRT Resolutions (Continued)
Resolution x Color on
External CRT
1024x768x256
System Introduction
Item
C&T65550B
C&T65550B: 3.3V
C&T65550XX: 3.3V/5V ("XX" represents codes other than "A" (i.e. "B1"))
Yes
During power-on, system supplies 5V to video chip and read its register to determine
whether the video chip is 5V or 3.3V/5V type. If 5V video chip is detected, system
maintains video voltage at 5V; if 3.3V/5V video chip is detected, system switches
video voltage to 3.3V.
CRT Refresh Rate
CRT only
60,75,85
60,75,85
60,75,85
60,75,85
56,60,75
56,60,75
56,60
60,75,86I
CRT Refresh Rate
60,75,86I
DRAM(EDO type)
Fixed
1MB (256K x 16 x 2pcs)
60ns
3.3V
TSOP
Specification
Simultaneous on
TFT LCD
Simultaneous
60
60
60
60
60
60
60
60
Simultaneous on
TFT LCD
60
Specification
Simultaneous on
STN LCD
SVGA
Y
Y
Y
Y
Y
Y
Y
Y
Simultaneous on
STN LCD
Y
SVGA
Y
Y
Y
N
Y
Y
N
Y
Y
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