SH7052 datasheet(545/919 Pages) RENESAS

545 / 919 page

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• Bit 12—Receive Overload Warning Interrupt Flag (IRR4): Status flag indicating the error

warning state caused by the receive error counter.

Bit 12: IRR4

Description

[Clearing condition]

Writing 1

(Initial value)

Error warning state caused by receive error

[Setting condition]

When REC

≥ 96

• Bit 11—Transmit Overload Warning Interrupt Flag (IRR3): Status flag indicating the error

warning state caused by the transmit error counter.

Bit 11: IRR3

Description

[Clearing condition]

Writing 1

(Initial value)

Error warning state caused by transmit error

[Setting condition]

When TEC

≥ 96

• Bit 10—Remote Frame Request Interrupt Flag (IRR2): Status flag indicating that a remote

frame has been received in a mailbox (buffer).

Bit 10: IRR2

Description

[Clearing condition]

Clearing of all bits in RFPR (remote request wait register)

(Initial value)

Remote frame received and stored in mailbox

[Setting conditions]

When remote frame reception is completed.

When corresponding MBIMR = 0.

• Bit 9—Receive Message Interrupt Flag (IRR1): Status flag indicating that a mailbox (buffer)

receive message has been received normally.

Bit 9: IRR1

Description

[Clearing condition]

Clearing of all bits in RXPR (receive complete register) when MBIMR is 0

(Initial value)

Data frame or remote frame received and stored in mailbox

[Setting conditions]

When data frame or remote frame reception is completed.

When corresponding MBIMR = 0.

SH7052 Datasheet(PDF) 545 Page - Renesas Technology Corp

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