C-Cpu Board: 05P0852; C-If Board: 05P0853; Panel Board: 05P0844; Set Items Saved In The Control Unit - Furuno FS-1575 Service Manual

7.8 Control Unit: FS-2575C
When two Control units are connected, the No. 1 Control unit will turn ON and OFF the
system power. The No. 2 Control unit turns ON and OFF its own power.
When the handset is set to OFF HOOK mode or any key other than AF VR is in operation,
either one of the two Control units will be disabled to display "OCCUPIED."
Consequently, the No. 1 Control unit has to be installed in the W/H.

1. C-CPU board: 05P0852

The C-CPU board consists of CPU, Flash ROM, SD RAM, CODEC, and FPGA.
The CODEC converts an analog voice signal inputted from the handset MIC to a digital
signal and outputs it to the Transceiver unit through the FPGA.

2. C-IF board: 05P0853

The C-IF board interfaces the NBDP terminal, Pinter, and Transceiver unit.

3. PANEL board: 05P0844

The PANEL board detects pressing of keys under the scan control using 5×5 matrix.
The volume control knob, sensitivity control knob, and channel knob use a rotary
encoder.

4. Set items saved in the control unit

For details, refer to information on page 6-47.
7-71
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