Controller; Overview - Ricoh Gestetner LANIER SAVIN G071 Service Manual

6.11 CONTROLLER

6.11.1 OVERVIEW

Flash ROM
8MB
Network
I/F PHY
IEEE1284
I/F
Controller
SDRAM DIMM I/F
The controller uses GW (Ground Work) architecture.
1. CPU:
QED RM5261 (250 MHz)
2. CELLO:
GW architecture ASIC. It uses a 124 MHz bus (64 bit) for interfacing with CPU
and memory. It controls the interface with the CPU and also controls the
following functions: memory, local bus, interrupts, PCI bus, video data, HDD,
network, operation panel, IEEE1284, and image processing.
3. SDRAM DIMM (2 slots): 64 MB SDRAM (resident), expandable up to 384 MB
with a 64 MB, 128 MB, or 256 MB SDRAM.
4. Flash ROM:
8 MB flash ROM programmed for system and network applications.
5. ROM DIMM (2 slots):
The DIMM installed in the machine includes 4 MB flash ROM programmed for
printer applications. This DIMM also includes 4 kB of Mask ROM for storing
internal printer fonts. Currently the remaining DIMM slot is not being used.
G071
CÓPIA NÃO CONTROLADA
NVRAM
Board 64kB
NVRAM I/F
NVRAM
8kB
CELLO
CPU
SDRAM
DIMM x 2
CÓPIA NÃO CONTROLADA
Flash ROM
IC Card
DIMM 4MB
IC Card I/F ROM DIMM I/F
RAPI
6-56
CONTROLLER
IDE
HDD
I/F
IEEE1394
I/F
PCI
IEEE802.11b
I/F
I/F
USB 2.0 I/F
BCU
G070D553.WMF
SM