M32CSLASH86 datasheet(364/505 Pages) RENESAS

364 / 505 page

Page 341

23. CAN Module

)

(

23.1.18 CANi Single-Shot Status Register (CiSSSTR Register) (i=0, 1)

Figure 23.21 C0SSSTR and C1SSSTR Registers

If the arbitration lost or transmission error causes a transmission failure, the bit corresponding to mes-

sage slot j (j=0 to 15) is set to "1". The SSSj bit is set to "0" by program because it is not set to "0"

automatically.

Use the MOV instruction, instead of the bit clear instruction, to set the SSSj bit to "0". Bits not being

changed to "0" must be set to "1".

For example:

To set the SSS0 bit for CAN0 to "0"

Assembly language:

mov.w #07FFFh, C0SSSTR

C language:

c0ssstr = 0x7FFF;

CANi Single-Shot Status Register (i=0, 1)(1)

Symbol

Address

After Reset(2)

C0SSSTR

022516 - 022416

000016

C1SSSTR

02A516 - 02A416

000016

SSS15

SSS14

SSS13

SSS12

SSS11

SSS10

Message Slot 15 Single-Shot

Status Bit

SSS9

SSS8

SSS7

SSS6

SSS5

Message Slot 14 Single-Shot

Status Bit

Message Slot 13 Single-Shot

Status Bit

Message Slot 12 Single-Shot

Status Bit

Message Slot 11 Single-Shot

Status Bit

Message Slot 10 Single-Shot

Status Bit

Message Slot 9 Single-Shot

Status Bit

Message Slot 8 Single-Shot

Status Bit

Message Slot 7 Single-Shot

Status Bit

Message Slot 6 Single-Shot

Status Bit

Message Slot 5 Single-Shot

Status Bit

Message Slot 4 Single-Shot

Status Bit

Message Slot 3 Single-Shot

Status Bit

Message Slot 2 Single-Shot

Status Bit

Message Slot 1 Single-Shot

Status Bit

Message Slot 0 Single-Shot

Status Bit

SSS4

SSS3

SSS2

SSS1

SSS0

0: No arbitration is lost, or no

transmit error occurs

1: Arbitration is lost, or transmit

error occurs

Bit Name

Function

Bit

Symbol

(Note 3)

NOTES:

1. The CiSSSTR register can be accessed only when the BANKSEL bit in the CiCTLR1 is set to "0"

(message slot control register and single-shot register selected).

2.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.

3. Set to "0" by program. When it is set it to "1", the value before setting to "1" remains.

b15

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