PD72042B_15 Datasheet, PDF (10/92 Pages) Renesas Technology Corp – LSI DEVICE FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

µPD72042B
2. IEBus OPERATION
2.1 OVERVIEW
The µPD72042B is a CMOS LSI device for the IEBus interface.
The IEBus is designed to enable the data transmission between devices in a small-scale digital data transmission
system.
The µPD72042B is connected to a microcomputer built into a device. A serial interface (SCK, SO, and SI pins)
is used for connection. The host controller (microcomputer) sets the commands and data needed for data transmission
via this serial interface.
When data is transmitted, the host controller sets the data in the µPD72042B via the serial interface. Then, signals
are output on the BUS pins (BUS+, BUS–). When data is received from the BUS pins, the host controller can read
it via the serial interface.
8
Data Sheet S13990EJ3V0DS