Sega Game Gear VA1 User Manual

4. BLOCK DIAGRAM
MAIN BOARD
1 CHIP=CPU+VOP+SCA
ICl
IC CUSTOM CHIP
IC3
JLP04364G-1 5L
MAIN RAM
64KBIT
STATIC
RAM
r-------------------- -
Z80A
CENTRAL
PROCESSING
UNIT
lf ADDRESS BUS
~ I II - DATA BUS
~~~:============-=~==j VIDEO. I==========::='J
.~ I I DISPLAY CONTROL BUS
~;=========~-=~ PROCESSOR I================:J
CCLK
3. 5795MHz
IC2
HM65256BLFP-12
VRAM
256KBIT
PSUEOO
STATIC
RAM
-----------------------------------------,
,.---------. AC2 0 0 V .----------..
BACK LIGHT 30KHz DC-AC
FOR
CD
CONVERTER
L (INVERTER C I RCUI Tl
+5V
DC-DC CONVERTER BOARD
CONTROL
MAIN CLOCK
I C VS CONN +SV +5V
1
DC-DC EXTERNAL • AC ADAPTOR
BUS
E
0
VCLK
10. 738MHz
SOUND ANALOG
DATA BUS
32. 215905
MHZ
~m~
CONTROL PAD +
34
y
0
INTERNAL 6 AA BATTERIES
CONVERTER BATTERY PACK C
I ~
~
45P CARTRIDGE
SLOT
CCLK
&
VCLK
CLOCK
ADDRESS BUS
DATA BUS
CONTROL BUS
STANDARD
CELL
ARRAY
LCD DRIVER
CONTROL BUS
l=========:j I L co UN I T]
~~...,...-.,..,.,.-J
SOUND ANALOG DATA
+5V. +34V
45P CARTRIDGE 1------'
SLOT
0~20V POWER SUPPLY +5V. +34V
CIRCUIT TO ~"-------'
LCD DRIVER
+5V
SOUND BOARD
GENERATER
I 0 SOUND
~~~~~~~~~~~~~~~~~~~
JOY BUS
CONTROL
PAD
I/0 DATA BUS ]
l.:================:j t5NNEC T OF
~---------------------------------------------------------------------------------------------------------J
1
2
3 4
5
6
-7-
-8-
7
CAR ADAPTOR
SPEAKER 0. 1 5W
8 OHM
(MONAURAU
B
A
8

Sega Game Gear VA1 Specifications

General

Brand	Sega
Model	Game Gear VA1
Category	Game Console
Language	English