HiTi Digital 630PS, Service Manual, Page: 8 / 80

Ver. Ex.1.1
Confidential
2003/7/8
Fig 4. Main Board
3.1.1 ASIC Architecture
The most important IC on the main board is FD2680E, which is designed by
HITI. This ASIC contains a DSP core, a 8032 MCU, a SDRAM controller, a
CCIR601/656 Video controller, a CompactFlash card controller, a SmartMedia
card controller, a multi-type thermal print engine, an USB controller, the
embedded SRAM, an ADC, and IOs. Firmware can control the action of printer
via the versatile interfaces of FD2680E ASIC.
3.1.2 Memory IC
a) SDRAM
This 256Mbit SDRAM on main board is to be the data buffer. The image
file, print data, video frame are temporarily stored during operation.
NAND flash
3.3V
256Mb
ADF motor
Driver