Canon FAX-L1000 - Manual (Page 520)

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FAX-L1000 Chapter 5: Appendix
(1) The received data is sent to the slave CPU from the modular board of the
FAX-L1000 ISDN KIT through the ISDN interface IC.
(2) The slave CPU converts it to MR encode data and stores it in the DRAM.
(3) The MR encode data stored in the DRAM is transferred to the DRAM on the SCNT
board through the TWINS board.
(4) The CODEC IC on the SCNT board reads and combines the MR data stored in the
DRAM by DMA transfer and writes raw data into the RAM in the CODEC IC. The
data in the internal RAM is converted from parallel to serial by the printer interface
of the IC and transferred to the image processing IC.
(5) The image processing IC smoothens or scales down the data received from the
CODEC IC for the LBP. The IC sends a print request signal (nPRNT) to the ECNT
board interface, and when the printer becomes ready, the IC sends image data to the
ECNT board through the TWINS board in synchronization with the vertical
synchronizing signal (nVSYNC) and the horizontal synchronizing signal (nBD)
coming from the ECNT board.
(6) The ECNT board controls the printer and prints data based on the data from the
SCNT board and information, such as paper size.