Toshiba ESTUDIO170F, Service Manual

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January 2005 © TOSHIBA TEC e-STUDIO170F Circuit Description
7 - 15
7.2.4 PC Interface
The PC interface provides the following modes: the PC scanner mode in which the document(s) placed
on this machine is read into the PC as data, the PC facsimile transmission mode in which document
data is directly sent from the PC, the PC facsimile reception mode in which the data received is read by
the PC, and the printer mode in which the data sent from the PC is printed.
[ 1 ] PC Scanner
Fig.7-15
* Details regarding each area of SDRAM used
(3): DSC I/F > SDRAM (PIX area: Scan buffer)
(4): SDRAM (PIX area: Scan buffer) > SDRAM (SYS area: Image memory)
(5): SDRAM (SYS area: Image memory) > SDRAM (PIX area: CODEC buffer)
(6): SDRAM (PIX area: CODEC buffer) > SDRAM (PIX area: PC buffer)
(7): SDRAM (PIX area: PC buffer) > PC I/F
(1)
(2)
(3)
(4) (5)
(6)
(7)
Main PBA
PC
DSC I/F MODEM I/F PC I/F PTC I/F CODEC I/F
SDRAM controller
IC27
DSC
IC49
USB controller
IC53
MODEM
IC16
CODEC
PIX area* SYS area*
IC1 IC1
SDRAM SDRAM
IC1
SDRAM
IC15
ASIC
(Engine controller)
CIS