Panasonic KX-FP362BX Service Manual

This custom IC is used for the general FAX operations.1. CPU:This model uses a Z80 equivalent to the CPU operating at12 MHz. Most of the peripheral functions are performed bycustom-designed LSIs. Therefore, the CPU only works forprocessing the results.2. RTC:Real Time Clock3. DECODER:Decodes the address.4. ROM/RAM I/F:Controls the SELECT signal of ROM or RAM and the bankswitching.5. CIS I/F:Controls the document reading.6. IMAGE DATA RAM:This memory is programmed into the ASIC and uses 8 KBfor the image processing. (See Fig. A.*)7. THERMAL HEAD I/F:Transmits the recorded data to the thermal head.8. MOTOR I/F:Controls the transmission motor which feeds the document.Controls the receiving motor which feeds the recordingpaper.9. OPERATION PANEL I/F:Serial interface with Operation Panel.10. I/O PORT:I/O Port Interface.11. ANALOG UNIT:Electronic volume for the handset and the monitor.Sends beep tones, etc.7.3.3. ASIC (IC501)Fig. ANote*:This memory is incorporated into the ASIC (IC501) and used for the image processing.Fig. A shows the memory map of the Image Data RAM.122KX-FP362BX