P9242-R3 datasheet(32/44 Pages) RENESAS

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P9242-R3/RB Datasheet

May 17, 2019

Table 20. Command Register

Address and Bits

R/W

Default

Function and Description

0800[7]HEX

Reserved

0BIN

0800[6:3]HEX

Number_of_bytes_ to_be_

transferred

0000BIN

0100BIN = Transfer 10 bytes

0011BIN = Transfer 8 bytes

0010BIN = Transfer 6 bytes

0001BIN = Transfer 4 bytes

0000BIN = Transfer 2 bytes

0800[2:1]HEX

Number_of_repeats

00BIN

11BIN = Send 4 times

10BIN = Send 3 times

01BIN = Send 2 times

00BIN = Send only 1 time

0800[0]HEX

Communication_Trigger

0BIN

If the communication channel is free, this bit is set to “0.”

The external MCU sets this bit to "1” to trigger the

communication. The P9242-R3 will reset this bit to 0

immediately after sending the data into the channel.

Table 21. Data Received Status Register

Address and Bits

R/W

Default

Function and Description

0801[7:1]HEX

Reserved

0000 000BIN

0801[0]HEX

Data_Received_Flag

0BIN

0BIN = No new data received

1BIN = Received new data

Table 22. Clear Interrupt Register

Address and Bits

R/W

Default

Function and Description

0803[7:1]HEX

Reserved

000 0000BIN

0803[0]HEX

Clear_interrupt_pin

0BIN

The external MCU sets this bit to "1” to clear interrupt pin.

P9242-R3 will reset this bit to “0” soon after clearing the

interrupt pin

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