Main Board Section - Panasonic KX-MB783BR Service Manual

6.3.

MAIN BOARD SECTION

6.3.1. Data Flow
[FAX Tx]
TEL
LINE
PC
LAN
USB
[FAX Rx]
TEL
LINE
PC
LAN
USB
CI S unit
Mai n Board
IC100
IC101
MODEM
DAA
IC750
LAN USB
PHY
I/F I/F
CI S unit
Mai n Board
IC100
IC101
MODEM
DAA
IC750
LAN USB
PHY
I/F I/F
1. An analog image data is output from CIS unit to IC503.
IC503 decode the analog data to digital data, and output to IC300.
Scanner I/F in IC300 process image data and store it in IC400
through SDRAM I/F.
2. CPU compress the data in IC400.
FB tr ansit Board
3. CPU transfer the data to MODEM
and output it to TEL LINE through DAA circuit.
CN59
CN510
IC503
AFE
Scanner
CPU Print I/F
I/F
JBIG DSP
1. FAX data is input from TEL LINE to MODEM in IC300
through DAA circuit.
And then store it in IC400 through SDRAM I/F.
2. CPU decompress the data in IC400.
FB tr ansit Board
3. Print I/F retrieve the data from IC400 and output it to LSU.
CN59
CN510
AFE IC503
Scanner
CPU Print I/F
I/F
JBIG DSP
15
IC300
IC400
SDRAM
SDRAM
I/F
IC300
IC400
SDRAM
SDRAM
I/F
KX-MB783BR
LSU
LSU