M32C83T datasheet(372/527 Pages) RENESAS

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Page 349

22. CAN Module

)

(

22.1.17 CAN0 Slot Buffer Select Register (C0SBS Register)

Figure 22.21 C0SBS Register

22.1.17.1 SBS03 to SBS00 Bits

If the SBS03 to SBS00 bits select a number i (i=0 to 15), the message slot i is allocated to the CAN0

message slot buffer 0. The message slot i can be accessed via addresses 01E016 to 01EF16.

22.1.17.2 SBS13 to SBS10 Bits

If the SBS13 to SBS10 bits select a number i, the message slot i is allocated to the CAN0 message slot

buffer 1. The message slot i can be accessed via addresses 01F016 to 01FF16.

22.1.18 Message Slot Buffer

The message slot, selected by setting the C0SBS register, is read by reading the message slot buffer. A

message can be written in the message slot selected by the C0SBS register if the message is written to

the message slot buffer.

CAN0 Slot Buffer Select Register

Symbol

Address

After Reset(2)

C0SBS

024016

0016

SBS00

SBS01

CAN0 Message

Slot Buffer 0

Number Select Bit

CAN0 Message

Slot Buffer 1

Number Select Bit

SBS02

SBS03

SBS10

SBS11

SBS12

SBS13

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

(Note 1)

Bit Name

Function

Bit

Symbol

b3 b2 b1 b0

1 1 0 0 : Message slot 12

1 1 0 1 : Message slot 13

1 1 1 0 : Message slot 14

1 1 1 1 : Message slot 15

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

b3 b2 b1 b0

1 1 0 0 : Message slot 12

1 1 0 1 : Message slot 13

1 1 1 0 : Message slot 14

1 1 1 1 : Message slot 15

NOTES:

1. 16 CAN0 message slots provided. Each message slot can be selected as a transmit or a receive

slot.

2. Value is obtained by setting the SLEEP bit in the C0SLPR register to "1" (sleep mode exited) and

supplying a clock to the CAN module after reset.

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