Main Pcb; Cpu - Brother MFC-8220 Service Manual

1.3

Main PCB

For the entire circuit diagram of the main PCB, see
DIAGRAM' in this manual.
1.3.1

CPU

A Fujitsu 32bit RISC CPU, SPARClite is built in the ASIC. While the CPU is driven with a clock
frequency of 66.66 MHz in the user logic block, it itself runs at 133.33 MHz, which is generated
by multiplying the source clock by two.
APPENDIX 4.1 to 4.6 'MAIN PCB CIRCUIT
Fig. 3-3
3-3
MFC-8220
SERVICE MANUAL