Configuration; Function Overview - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
22.2

Configuration

22.2.1

Function overview

Features summary
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
• The data transfer system complies with the IEBus (communication mode 1/
communication mode 2) protocol.
• The IEBus (Inter Equipment Bus) controller is mainly intended to transfer
data between automotive devices by using a two-line serial bus interface.
• Effective transmission speed: Approximately 18 kbps (communication mode 1), or
approximately 27 kbps (communication mode 2)
• The single mode or FIFO mode can be selected.
• Maximum number of transferred bytes:
32 bytes/frame (communication mode 1)
128 bytes/frame (communication mode 2)
• To implement IEBus, an external IEBus driver and receiver are necessary.
The driver and receiver are not built in.
• This IEBus controller uses negative logic.
• Operation clock: 8 MHz (input
• Interrupt request signals
– Data interrupt (IEBBTD)
For transmission data write processing (single mode, FIFO mode)
For reception data read processing (single mode)
– Error interrupt (IEBBTERR)
For error processing
– Status interrupt (IEBBTSTA)
Start interrupt processing (single mode)
Status transmission interrupt (single mode)
Communication completion interrupt (single mode, FIFO mode)
Frame completion interrupt (single mode, FIFO mode)
– Vector interrupt (IEBBTV)
Occurs at the same time as IEBBTERR or IEBBTSTA (single mode)
For reception data read processing (FIFO mode)
• Pin configuration
– IERxD: IEBus reception data input signal
– IETxD: IEBus transmission data output signal
P0φ = 32 MHz to this module
22. IEBus Controller
)
22-3