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3-7. Control Unit Descriptions
(BVM-14E5E/14E5U/14F5E/14F5U, BKM-1 OR)
• HC Board
1. Key Scan, LED Lighting
The sub CPU (!Cl) transmits the LED lighting signal and key
scanning output signal to the HA board and HB board using the
serial signals (MISO, MOSI, SCLK), and receives the key
scanning input signals.
2. Memory Card
The sub CPU (!Cl) reads/writes the data (adjustment data, etc.)
from/on the memory card connected to CNI.
3-30
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