Main Controller; Main Controller Components - Canon iPF6100 Service Manual

Chapter 2

2.4.2 Main Controller

2.4.2.1 Main controller components

IC601
IC602
IC603
IC604
a) ASIC (IC1/IC2)
The ASIC with a 16-bit internal bus is driven in sync with the 66 MHz external clock. It supports the following
functions:
Image processing unit
This unit converts the RGB multi-value image data or CMYK multi-value data received from the host computer
through the interface connector to the binary image data for the ink colors used.
DMA controller
This controller control DMA transfer of the data transferred through the input interfaces such as the USB and
expansion card slot as well as DMA transfer of the data stored in the DIMM.
Image data generation/output function
This function generates image data for color printing from the received image data and the mask pattern
(corresponding to print mode) stored in the FLASH ROM, and stored the generated image data in DIMM. It also
outputs the generated image data to the carriage PCB.
Interrupt controller
This controller receives and processes internal interrupts and external interrupts from the USB, image
processing unit, and expansion card slot.
Timer function
Even when the printer is turned off, the timer function is held on using the RTC(IC803) and lithium
2-56
IC1
IC1201
BAT801 BAT801
IC701
IC3001 IC3001
F-2-39
IC802 IC802 IC803 IC803
IC3101 IC3101
IC2
IC2801 IC2801
IC2901 IC2901
0016-8391