Table of Contents
Advertisement
KX-F1200
I
2-7. ASIC (IC404)
This custom IC is used for gefleral FAX operation.
1) DECODER:
2) CPU I/F:
3) ROM/RAM I/F:
4) CCD I/F:
5) IMAGE DATA RAM:
6) THERMAL HEAD I/F:
7) TX MOTOR I/F:
8) RX MOTOR I/F:
9) OPE. PANEL I/F:
10) I/O PORT:
Decodes the address of the CPU (IC401) according to the memory map.
Outputs the INTERRUPT signal.
Controls the SELECT signal of ROM or RAM.
Controls document reading.
Inside ASIC and 8KB. Fig. A indicates the mapping which is used image processing.
Transmits the recorded data to the thermal head.
Controls the transmission motor which feeds the document.
Controls the receiving motor which feeds the recording paper.
Serial Interface with Operation panel
I/O Port Interface (Exa. Sensor etc.)
This memory is built-in to ASIC (IC404) to be used for image processing.
Memory map of Image Data RAM is shown below.
20 DFFFH
20 D800H
20 D000H
20 C800H
SHADING
DATA
2KB
IMAGE PROCESSING
WORK 1KB
LINE MEMORY
4 LINE 1KB
n-l/n+1 LINE
MEMORY 2KB
n LINE MEMORY 2KB
20 C000H
(CPU ADDRESS)
- 90 -
Advertisement
Chapters
Table of Contents
