e-STUDIO170F Circuit Description
January 2005 © TOSHIBA TEC
7 - 18
(1) The document data (coded data or raster data) sent from the PC is input to the PC interface of
the ASIC (IC15) through the USB controller (IC49).
(2) The document data is transferred to the PIX area of the SDRAM (PIX-SDRAM: IC1) through the
SDRAM controller of the ASIC. During this period, the system communicates with the destination
to identify the coding for the data to be transmitted.
(3) Only when the document data is coded data, the coded data is transferred through the CODEC
interface of the ASIC to the CODEC (IC16) where it is decoded to raster data. Then the raster
data is transferred to the PIX-SDRAM.
For PC indirect transmission, go to step (4).
For PC direct transmission, go to step (6).
(4) The raster data is transferred to the CODEC where it is coded to data in the JBIG format. Then
the JBIG coded data is transferred to the SYS area of the SDRAM (SYS-SDRAM: IC1) through
the SDRAM controller on the ASIC. This allows the coded data for the documents for transmis-
sion to be stored in the SYS-SDRAM.
(5) The JBIG coded data is transferred to the CODEC where it is decoded to raster data. Then the
raster data is transferred to the PIX-SDRAM.
(6) The raster data is transferred to the CODEC where it is coded in accord with the coding format
(MH, MR, MMR or JBIG) specified by the destination. Then the coded data is transferred to the
SYS-SDRAM. This allows one page of coded data to be stored in the SYS-SDRAM.
(7) The coded data is transferred to the MODEM (IC53) through the MODEM interface of the ASIC
where it is modulated to an analog signal for telephone lines. Then the modulated analog signal
is sent to the telephone line through the NCU PBA.
Содержание ESTUDIO170F
Страница 1: ...SERVICE MANUAL PLAIN PAPER FACSIMILE e STUDIO170F File No SME04002900 R04102171300 TTEC Ver01_2005 05 ...
Страница 2: ... 2005 TOSHIBA TEC CORPORATION All rights reserved ...
Страница 192: ...e STUDIO170F Function Settings January 2005 TOSHIBA TEC 4 132 ...
Страница 214: ...e STUDIO170F Mechanical Description January 2005 TOSHIBA TEC 5 22 ...
Страница 308: ...e STUDIO170F Circuit Description January 2005 TOSHIBA TEC 7 78 ...
Страница 372: ...e STUDIO170F Removal Replacement Adjustment January 2005 TOSHIBA TEC 8 64 ...
Страница 490: ...e STUDIO170F Appendix January 2005 TOSHIBA TEC 12 8 ...
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