Xerox MF Series, Technical Document

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- 10 - TD 252 787 467 - A
3.2 CPU
BOARD
The CPU board is based on the Digicolor2 circuit which performs in particular the function of micro-
processor.
The executable code is stored in the flash memory Z460.
This flash memory is divided in two zones: a zone reserved for the storage of the code and a zone
reserved for the storage of the documents.
The code is loaded from this flash memory into SDRAM, and the microprocessor executes its instruc-
tions from the SDRAM.
Before printing, the documents to be printed are stored as bitmaps in SDRAM.
The SDRAM is also used as the working memory for the Digicolor2.
13 VEILLE* O Not used
14 REVEIL* I Not used
15 STSC* O Start of scan sensor
16 PSF* O Sheet present sensor
17 OUVCAP* O Cover open sensor
18 P3V3 - 3.3 V supply
19 VALIM - 5 V supply
20 ALIMCOUPE - 5 V supply
21 HPM I Differential LF signal to
loudspeaker
22 HPP I Differential LF signal to
loudspeaker
Pin Signal Input/Output Use