JVC RM-STHA10EC, Service Manual

Page: 51 / 116

TH-A10R/TH-A10
1-51
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15 DI0
DI1
DI2
DI3
WE
GND
TEST
WRST
WCK
VDD
DI4
DI5
DI6
DI7
DO0
DO1
DO2
DO3
RE
GND
OE
RRST
RCK
VDD
DO4
DO5
DO6
DO7
1~4
5
6
7
8
9
10
11~14
15~18
19
20
21
22
23
24
25~28
Data input
Write enable signal input
Connect to GND
Connect to GND
Write reset signal input
Write clock signal input
Power 5V
Data input
Data output
Power 5V
Read clock signal input
Read reset signal input
Connect to GND
Connect to GND
Read enable signal input
Data output I
I
-
-
I
I
-
I
O
-
I
I
-
-
I
O
DI0~3
WE
GND
TEST
WRST
WCK
VDD
DI4~7
DO7~4
VDD
RCK
RRST
OE
GND
RE
DO3~0
Pin No. Symbol
Pin Function
I/O
UPD42280GU-30-X(IC552):2M RAM
1.Terminal Layout
2.Pin Function
3.Block Diagrams
Refresh
timer
Controller
Timing
generator
Write
Address
counter
Read
Address
counter
Refresh
Address
counter
Address counter
Write Address pointer
Write Data registor Write Data registor
Write Address pointer
Read Address pointer
Read Data registor Read Data registor
Read Address pointer
256k 8
Memory cell array
Buffer
input
80 8
SRAM Buffer
Buffer
output
WCK
RCK
DO0~7
DI0~7
WRST
RRST
WE
RE
OE