Ricoh G031, Service Manual

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SM 11-5 G049/G054
G
049/G
0
54
2.10.2 DEVICES
Devices Description
CPU 133 MHz VR4310
ASIC: ROCKY Z Memory map control
Reset signal
DRAM control
DMA control
FCI control (edge smoothing, toner saving)
Interrupt control
Engine serial communication control
Interval control
Centronics I/F
I/O port
Code ROM Flash ROM (2 MB) 32 bit
DRAM 16 MB (16 bit DRAM
××××
2)
EEPROM 2 KB (NVRAM)
Centronics I/F
Bi-directional parallel interface (standardized by IEEE 1284)
Option I/F G049: 2 slots
RS232C
Ethernet (100 Base-Tx, 10 Base-T)
Hard disk drive
IC Card adapter for up-dating controller firmware (CN
3)
G054: 1 slot
RS232C
Ethernet (100 base-Tx, 10 Base-T)
Hard disk drive
IC Card adapter for up-dating controller firmware
Optional RAM I/F DIMM
××××
1 slot, 32 or 64 MB DIMM
DIMM I/F 1 slot
DIP SW
SW No. Setting Description
OFF Booting from Flash ROM 1
ON Booting from IC Card
2 Not used
3 Not used
4 Not used