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KX-FLB758RU
7.3.1.2.
ASIC (IC604)
This IC is used for general FAX operations.
(1) CPU:
(2) RTC:
(3) DECORDER:
(4) ROM/RAM I/F:
(5) ANALOG UNIT:
7.3.1.3.
ROM (IC606)
This 2MB FLASH ROM has 31 blocks.
The capacity of each block is 64 KB.
The addresses of the this area are from 000000H to 1FFFFFH.
7.3.1.4.
GATE ARRAY (IC610)
This custom IC is used as following.
(1) LSU I/F Control the polygon motor and output video signal to LSU.
(2)OPERATION PANEL I/F Serial interface with operation canal.
(3) FAN MOTOR I/F Control FAN MOTOR and detect the rotation of FAM MOTOR.
(4) ANALOG I/F Serial interface for analog ASIC and electrical volume.
(5) I/O PORT I/O Port Interface.
7.3.1.5.
SYNCHRONOUS DYNAMIC RAM (IC608)
This SDRAM is used for CPU work and receiving memory and page memory.
The address are from 200000H to 27FFFFFH.
7.3.1.6.
SYNCHRONOUS DYNAMIC RAM (IC603)
The SDRAM is used for Image Processing work memory.
This address are from 1000000H to 11FFFFFH.
This model uses ARM equivalent CPU operating at 40 MHz.
Many of the peripheral functions are handled by custom designed LSIs.
As a result, the CPU only needs to process the results.
Real time clock.
Decords the address.
Controls the SELECT signal of ROM or RAM and bank switching.
Sends beep tones, etc.
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Troubleshooting
