
SF150T
5-1
5. Circuit Description
5-1 General
The main circuit board controls the machine, and consists of Super Fax Chip (KS16118), External memory,
CODEC circuit with modem-TX and RX signal path and some parts of the Line Interface Unit, Digital TAD
circuit with DSP amd DRAM, witch controls the system.
5-2 System Control Section
This circuit consists of the EP-ROM and SRAM, external Real Time Clock crystal, RTC and memory back-up
circuitry, and the Super Fax Chip (KS16118).
The KS16118 Super Fax Chip is an integrated 9600 bps modem, image processor, 8-bit MPU, peripheral
controller, and analog front end circuit on a single-chip.
Peripheral functions inculde 2-channel SI0, 3-channel DMA, 6-bit Half flash A/D converter, scanner and
video processor units, TPH interface, CODEC unit, and tone generator.
Modem is a 9600 bps, half duplex monolithic device incorporating digital filters, a Samsung SSP1600 digital
signal processor and CPU-Interface logic.
Figure 5-1: KS16118 External Memory Map
1FFFH
0100H
00FFH
0000H
0000H
FFFFH
FF80H
FF7FH
FF00H
FEFFH
/DMS
(SRAM)
Peripheral
PCS0
DSP /CS
PCS1
Interrupt
Vectors
/PMS
(EP-ROM)
[ Program Memory ]
[ Data Memory ]
5-2-1 Memory Map
The external memory of the CPU is devided into, 1 byte(FF00H) DSP chip select, 32kbyte SRAM (0000H
through 7FFFH) and 128kbyte EP-ROM (0100H through 1FFFH).
Содержание SF-150T
Страница 8: ...Exploded Views and Parts Lists SF150T 8 5 8 3 Ass y COVER TOP 1 2 3 4 6 7 8 S1 9 10 S2 S3 S3 11 12 5 ...
Страница 10: ...Exploded Views and Parts Lists SF150T 8 7 8 4 Ass y Handset 3 2 S1 1 4 5 6 7 8 9 ...
Страница 12: ...Exploded Views and Parts Lists SF150T 8 9 8 5 Ass y Base 5 6 7 8 S1 2 1 3 4 10 9 ...
Страница 67: ...Samsung Electronics Co Ltd Mar 1998 Printed in Korea JF68 60936A ...