32186 datasheet(676/1032 Pages) RENESAS

676 / 1032 page

CAN MODULE

13-66

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

13.2.9 CAN Cause of Error Registers

CAN0 Cause of Error Register (CAN0EF)

<Address: H’0080 1017>

CAN1 Cause of Error Register (CAN1EF)

<Address: H’0080 1417>

b15

BITE1

BITE0

STFE

FORME CRCE

ACKE

00000000

RCVE

TRE

Bit Name

Function

TRE

0: Error not detected

R (Note 1)

Transmit error detection bit

1: Transmit error detected

RCVE

0: Error not detected

R (Note 1)

Receive error detection bit

1: Receive error detected

BITE0

0: No bit error is detected

R (Note 1)

"0" sending bit error detection bit

1: Bit error is detected when sending a "0"

BITE1

0: No bit error is detected

R (Note 1)

"1" sending bit error detection bit

1: Bit error is detected when sending a "1"

STFE

0: Error not detected

R (Note 1)

Stuff error detection bit

1: Stuff error detected

FORME

0: Error not detected

R (Note 1)

Form error detection bit

1: Form error detected

CRCE

0: Error not detected

R (Note 1)

CRC error detection bit

1: CRC error detected

ACKE

0: Error not detected

R (Note 1)

ACK error detection bit

1: ACK error detected

Note 1: Only writing "0" is effective. Writing "1" has no effect; the bit retains the status it had before the write.

This register indicates error information when a communication error occurred.

Each bit in this register is set every time a communication error is detected, and is not cleared unless a program

writes a "0" to the relevant bit.

(1) TRE (Transmit Error Detection) bit (Bit 8)

This bit is set to "1" when a communication error is detected while operating as a transmit node. The bit is

cleared by writing a "0" in software.

(2) RCVE (Receive Error Detection) bit (Bit 9)

This bit is set to "1" when a communication error is detected while operating as a receive node. The bit is

cleared by writing a "0" in software.

(3) BITE0 ("0" Sending Bit Error Detection) bit (Bit 10)

This bit is set to "1" when a bit error is detected while sending a "0" from CTX. The bit is cleared by writing

a "0" in software.

(4) BITE1 ("1" Sending Bit Error Detection) bit (Bit 11)

This bit is set to "1" when a bit error is detected while sending a "1" from CTX. The bit is cleared by writing

a "0" in software.

13.2 CAN Module Related Registers

32186 Datasheet(PDF) 676 Page - Renesas Technology Corp

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