Sg3-D Board - Gestetner B147 Service Manual

BOARDS

4.2.5 SG3-D BOARD

NCCP
FCU
Flash
SDRAM
ROM
CPU
Modem JBIG
(RU30)
DATA/ADDRESS BUS
CODEC AFE NCU
SG3-D
B603D905.WMF
The SG3-D board allows up to two simultaneous communications when used with
the the FCU.
NCCP (New Communication Control Processor)
• Controls the SG3-D board
• CPU (RU30)
• Modem (V.34)
• JBIG
Flash ROM
• 8 MB flash ROM shared between the SG3 software and modem softare.
SDRAM
• 16 MB DRAM shared between the ECM buffer, line buffer, and work memory.
CODEC
• Converts analog data to binary data.
• Converts binary data to analog data.
AFE (Analog Front End)
• Analog circuit
• Data transfer
B603 102 SM