Toshiba ESTUDIO170F, Service Manual

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January 2005 © TOSHIBA TEC e-STUDIO170F Circuit Description
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[ 3 ] PC Facsimile Reception
Fig.7-17
* Details regarding each area of SDRAM used
(2): MODEM I/F > SDRAM (SYS area: Receive data buffer)
(3): SDRAM (SYS area: Receive data buffer) > SDRAM (PIX area: CODEC buffer)
(4): SDRAM (PIX area: CODEC buffer) > SDRAM (SYS area: Image memory)
(5): SDRAM (SYS area: Image memory) > SDRAM (PIX area: Page memory)
(6): SDRAM (PIX area: Page memory) > SDRAM (PIX area: PC buffer)
(7): SDRAM (PIX area: PC buffer) > PC I/F
(5) (3)
(7)
(2)
(1)
(6)
(4)
Main PBA
PC
NCU PBA
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
PSTN
IC15
ASIC
(Engine controller)