JVC XM-P55 Service Manual page 13

MN41X17400CTT10X(IC391):DRAM
Terminal Layout
Block Diagram
RAS
CAS
0 10
Row
0
Address
Buffer
Column
Address
10
Buffer
0 10
VSS
VDD
On Chip
VBB
Generator
Pin Functions
Symbol Function
Address input
Row address / strove
Column address / strove
Write enabling input.
Output enabling input.
Data input
Power supply ( 3.3V)
Power supply (0V)
Non connection
Clock Generator
CBR Refresh
Counter
Memory
Cell
Sense.
Amp
Column
Decoder
Write
Clock
WE
Generator
Data
Input
Buffer
DQ0
DQ3
Data
Output
Buffer
OE
XM-P55
XM-PJ1
2-11