M32CSLASH86 datasheet(346/505 Pages) RENESAS

346 / 505 page

Page 323

23. CAN Module

)

(

CANi Status Register (i=0, 1)

Symbol

Address

After Reset(1)

C0STR

020316 - 020216

X000 0X01 0000 00002

C1STR

028316 - 028216

X000 0X01 0000 00002

0 0 0 0 : Message slot 0

0 0 0 1 : Message slot 1

0 0 1 0 : Message slot 2

0 0 1 1 : Message slot 3

1 1 0 1 : Message slot 13

1 1 1 0 : Message slot 14

1 1 1 1 : Message slot 15

MBOX0

TRMSUCC

RECSUCC

Active Slot

Determination Bit

TRMSTATE

RECSTATE

STATE_RESET

STATE_LOOPBACK

(b10)

STATE_BASICCAN

STATE_BUSERROR

STATE_ERRPAS

STATE_BUSOFF

(b15)

Transmit Complete

State Flag

Receive Complete

State Flag

Transmit State Flag

Receive State Flag

CAN Reset State Flag

Loop Back State Flag

BasicCAN State Flag

CAN Bus Error State Flag

Error Passive State Flag

Bus-Off State Flag

0: Transmission is not completed

1: Transmission is completed

0: Reception is not completed

1: Reception is completed

0: Not transmitting

1: During transmission

0: Not receiving

1: During reception

0: CAN module is operating

1: CAN module reset is completed

0: Mode except Loop back mode

1: Loop back mode

0: Mode except BasicCAN mode

1: BasicCAN mode

0: No error occurs

1: Error occurs

0: No error passive state

1: Error passive state

0: No bus-off state

1: Bus-off state

MBOX1

MBOX2

MBOX3

Bit Name

Function

Bit

Symbol

Nothing is assigned. When write, set to "0".

When read, its content is indeterminate.

Nothing is assigned. When write, set to "0".

When read, its content is indeterminate.

NOTES:

1. Value is obtained by setting the SLEEP bit in the CiSLPR register to "1" (sleep mode exited) after reset

and supplying the clock to the CAN module.

b15

23.1.4 CANi Status Register (CiSTR Register) (i=0, 1)

Figure 23.6 C0STR and C1STR Registers

23.1.4.1 MBOX3 to MBOX0 Bits

The MBOX3 to MBOX0 bits store relevant slot numbers when the CAN module has completed trans-

mitting data or storing received data.

23.1.4.2 TRMSUCC Bit

The TRMSUCC bit is set to "1" when the CAN module has transmitted data as expected.

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

M32C/86 Datasheet(PDF) 346 Page - Renesas Technology Corp

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