Ricoh G031 Service Manual page 295

2.10.2 DEVICES
Devices
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
16 MB (16 bit DRAM × × × × 2)
DRAM
EEPROM 2 KB (NVRAM)
Centronics I/F
Bi-directional parallel interface (standardized by IEEE 1284)
Option I/F G049: 2 slots
G054: 1 slot
DIMM × × × × 1 slot, 32 or 64 MB DIMM
Optional RAM I/F
DIMM I/F 1 slot
DIP SW
SM
Description
RS232C
Ethernet (100 Base-Tx, 10 Base-T)
Hard disk drive
IC Card adapter for up-dating controller firmware (CN
3)
RS232C
Ethernet (100 base-Tx, 10 Base-T)
Hard disk drive
IC Card adapter for up-dating controller firmware
SW No. Setting
1 OFF
2
3
4
11-5
Description
Booting from Flash ROM
ON Booting from IC Card
Not used
Not used
Not used
G049/G054