Facsimile Reception - Toshiba e-STUDIO170F Service Manual

7.2.2

Facsimile Reception

PSTN
NCU PBA
( 1 )
IC53 IC49
MODEM USB controller
MODEM I/F PC I/F
( 2 )
( 3 )
* 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) > PTC I/F
January 2005 © TOSHIBA TEC
IC16
CODEC
CODEC I/F
IC15
ASIC
( Engine controller )
SDRAM controller
( 5 )
IC1 IC1 IC1
SYS area*
SDRAM SDRAM SDRAM
Main PBA
Fig.7-13
7 - 11
LSU
( 7 )
IC27
DSC
PTC I/F DSC I/F
( 4 ) ( 6 )
PIX area*
e-STUDIO170F Circuit Description
7