Gestetner G060 Service Manual page 293

Rev. 6/2001
6.10 CONTROLLER
6.10.1 OVERVIEW
Flash R O M
2M B
N e tw ork
I/F P H Y
IEE E 12 84
I/F
C on trolle r
S D R AM D IM M I/F
The controller uses GW (Grand Workware) architecture.
1. CPU: QED RM7000 (250 MHz)
2. COMIC (Color Model IC): GW architecture ASIC. It uses a 100 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: 2 MB flash ROM programmed for network applications
5. ROM DIMM (3 slots): The DIMM installed in the machine includes 8 MB flash
ROM programmed for system, printer, PCL5c, PS3, and RPCS applications.
This DIMM also includes 8 kB of Mask ROM for storing internal printer fonts.
Currently the remaining two DIMM slots are not being used.
6. NVRAM: 8 kB NVRAM for storing the printer parameters, total counter, and
logged data
7. IEEE1284 Interface: Supports compatible, nibble, and ECP modes
SM
N V R AM
IC C a rd
B oa rd 6 4kB
N V R AM I/F IC C a rd I/F
N V R AM
8kB
C O M IC
C P U
S D R AM
D IM M x 2
6-63
Flash R O M
D IM M 8 M B
R O M D IM M I/F
ID E
I/F
P C I
I/F
R A P I
B C U
CONTROLLER
H D D
IEE E 13 94
I/F
G060D553.WMF
G060