Toshiba e-studio 160 - Page Memory Board - Structure; Schematic - Page Memory

December 2002 TOSHIBA TEC 18 - 3 e-STUDIO160/200/250 PAGE MEMORY BOARD
Model HM5264405F-A60 or equivalent product
Access time 100 nS
Memory configuration 4194304 x 4 bits x 4 banks
Address Row address A0-A1
Column address A0-A9
Bank select address A12-A13
Refreshment cy 4096 cycle/64mS
18.2.2 Schematic
The figure below shows a schematic diagram of the page memory board.
Page Memory Board Schematic
(1) Page memory
32 MB of memory (DRAM) are mounted on the main board as standard.
The Option page memory board specification (DRAM)
The page memory board is provided with two slots for mounting the main PC Board.
Adding on this memory board increases the memory to 128 MB.
Control ASIC
I/O control
Address control
Data control
Rotation/merger control
Compression/decompression
I/O
Scanner
Printer
Page memory controller Page memory
Memory
SD-RAM
Standard 32MB
Extension slot (2)
Expanded memory board
Max 128MB