PD72042B_15 Datasheet, PDF (60/92 Pages) Renesas Technology Corp – LSI DEVICE FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

µPD72042B
[Byte 1, byte 2 (high-order 4 bits)]: Transmitter address
As indicated below, the transmitter address depends on whether the communication mode is master reception,
slave reception, or broadcast reception.
• Transmitter address
Case
Transmitter address
Master reception
Slave address
Slave reception
Master address
Broadcast reception
[Byte 2 (low-order 4 bits)] : Control bits
[Byte 3]
: Data-length bits
[Byte 4 and up]
: Reception data
The number of bytes of reception data is set in the RDR1 or RDR2 register, as described below.
RDR1: Number of bytes of reception data in master reception
RDR2: Number of bytes of reception data in slave reception or broadcast reception
The number of bytes of reception data indicates the number of bytes of data received normally within a
communication frame. This means that the number of bytes of reception data will match the length set in the data-
length field of a communication frame only when the data has been received normally.
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Data Sheet S13990EJ3V0DS