M32CSLASH86 datasheet(347/505 Pages) RENESAS

347 / 505 page

Page 324

23. CAN Module

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23.1.4.3 RECSUCC Bit

The RECSUCC bit is set to "1" when the CAN module has received data as expected. (Whether

received message has been stored in the message slot or not is irrelevant.) If the received message

is transmitted in loopback mode, the TRMSUCC bit is set to "1" and the RECSUCC bit is set to "0".

The RECSUCC bit is set to "0" when the CAN module has transmitted data as expected.

23.1.4.4 TRMSTATE Bit

The TRMSTATE bit is set to "1" when the CAN module is performing as a transmit node.

The TRMSTATE bit is set to "0" when the CAN module is in a bus-idle state or starts performing as a

receive node.

23.1.4.5 RECSTATE Bit

The RECSTATE bit is set to "1" when the CAN module is performing as a receive node.

The RECSTATE bit is set to "0" when the CAN module is in a bus-idle state or starts performing as a

transmit node.

23.1.4.6 STATE_RESET Bit

After both RESET1 and RESET0 bits are set to "1" (CAN module reset), the STATE_RESET bit is set

to "1" as soon as the CAN module is initialized.

The STATE_RESET bit is set to "0" when the RESET1 and RESET0 bits are set to "0".

23.1.4.7 STATE_LOOPBACK Bit

The STATE_ LOOPBACK bit is set to "1" when the CAN module is in loopback mode.

The STATE_LOOPBACK bit is set to "1" when the LOOPBACK bit in the CiCTLR0 register is set to "1"

(loop back function enabled).

The STATE_LOOPBACK bit is set to "0" when the LOOPBACK bit is set to "0" (loop back function

disabled).

23.1.4.8 STATE_BASICCAN Bit

The STATE_BASICCAN bit is set to "1" when the CAN module is in BasicCAN mode.

Refer to 23.1.1.3 BASICCAN bit for BasicCAN mode.

The STATE_BASICCAN bit is set to "0" when the BASICCAN bit is set to "0" (BasicCAN mode

function disabled).

The STATE_BASICCAN bit is set to "1" when the BASICCAN bit is set to "1" (BasicCAN mode

function enabled), the REMACTIVE bits in the CiMCTL14 and CiMCTL15 registers in the message

slots 14 and 15 are set to "0" (data frame received).

23.1.4.9 STATE_BUSERROR Bit

The STATE_BUSERROR bit is set to "1" when an CAN communication error is detected.

The STATE_BUSERROR bit is set to "0" when the CAN module has transmitted or received data as

expected. Whether a received message has been stored into the message slot or not is irrelevant.

NOTES:

1. When the STATE_BUSERROR bit is set to "1", the STATE_BUSERROR bit remains un-

changed even if both RESET1 and RESET0 bits are set to "1" (CAN module reset).

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