UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 29

• Manufacturer Part Number: UPD72042BGT
• Description: LSI DEVICE FOR Inter Equipment Bus (IEBus) PROTOCOL CONTROL
• Manufacturer: NEC [NEC]

4. REGISTERS
the transmission buffer uses 33 of the 40 bytes. The total size of the read registers is 49 bytes; the reception buffer
uses 40 of the 49 bytes.
PD72042B.
A microcomputer controls IEBus communication by reading from and writing to the internal registers of the
Registers are classified into write registers and read registers. The total size of the write registers is 40 bytes;
Table 4-1 lists the registers.
Data Sheet S13990EJ3V0DS
PD72042B
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