PD72042B_15 Datasheet, PDF (31/92 Pages) Renesas Technology Corp – LSI DEVICE FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

µPD72042B
4. REGISTERS
A microcomputer controls IEBus communication by reading from and writing to the internal registers of the
µPD72042B.
Registers are classified into write registers and read registers. The total size of the write registers is 40 bytes;
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.
Table 4-1 lists the registers.
Data Sheet S13990EJ3V0DS
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