Panasonic KX-W1500 - Page 32

(bo) CRT Gate Array (IC3)
The CRT Gate Array Pin Functions are shown in the following chart.
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NAME FUNCTION
CAS DRAM Colum Address Select
RAS _| DRAM Low Address Select
ADS ; DRAM Address Select
RAi Raster Address
RA2 Raster. address
RA3 Raster Address
VRDO VRAM Data
| VRD4 VRAM Data
VRD2 : VRAM Data
VRD3 VRAM Data
VRD5 ARAM Data
-CG@DO Char Gen Data
CGD1 Char Gen Data
CGb2 Char Gen Data
/CGD3 Char Gen Data
/GND | Ground i
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CG5 Char Gen Data
CG6 Char Gen Data
CGD7 Char Gen Data
VRD6 VRAM Data
VRD7 VRAM Data
VRD5 VRAM Data .
VRD4 VRAM Data
VRAM VRAM WRITE ENABLE
ARD4 ARAM Data
ARD6 ARAM Data
ARD7 ARAM Data
ARAM ARAM WRITE ENABLE
CUDISP Cursor
DISPTMG | Display Timing
Vec +5V
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NAME FUNCTION
Vec +5V
RES Reset
RAMCS4 | DRAM Chip Select
KBCS OUT PUT Select For Keyboard
RAMCS5 _ | VRAM, ARAM Chip Select
D7 Data Bus
D6 Data Bus
D5 Data Bus
D4 Data Bus
D3 Data Bus
D2 Data Bus
D1 Data Bus
DO Data Bus
XT1 22 MHz
xT2 22 MHz
TEST Ground
GND - Ground
IN7 Lid Open SW
MiN6 rats ‘ N.C
OUT3 : Keyboard
OUT2 Keyboard
OUT1 Keyboard
- OUTO Keyboard
All Address Bus
RD Read
WR Write
CLK 2.75 MHz
R/W Read/Write
EO System Clock
VIDEO FONT Data
SELECT VRAM, ARAM Address Select
VSYN 60 Hz