System Controller; System Controller Components - Canon W6200 Service Manual

W6200

4.2 System Controller

4.2.1 System controller components

LED5
a) CPU (IC1)
The CPU, with a 32-bit internal bus, operates in synchronization with the 266-MHz
internal clock that is generated from a 33.333-MHz external clock.
The CPU is connected to one 64-MB DIMM board, two 2-MB ROM chips, and a 4-
Kbit EEPROM chip. The CPU has the following functions.
DMA controller
The DMA controller manages the network, expansion card slots, and other input
interfaces and DMA transfer of the data stored in the SDRAM.
Interrupt controller
The interrupt controller receives and processes the external interrupts from the
network, image process ASIC (IC2), and the expansion card slots, in addition to the
internal interrupts.
IC12
IC2
IC27
IC19
IC17
IC16
IC21
SW1
IC20 IC25 IC24
Figure 4-28 System Controller
4-41
Part 4: Technical Reference
IC26
IC23
IC1
IC9
IC3
IC10