AT89C51CC02CA-RATUM datasheet(100/156 Pages) ATMEL

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100

AT/T89C51CC02

4126J–CAN–05/06

Table 64. CANIE Register

CANIE (S:C3h) – CAN Enable Interrupt message object Registers

Reset Value = xxxx 0000b

Table 65. CANBT1 Register

CANBT1 (S:B4h) – CAN bit Timing Registers 1

Note:

1. The CAN controller bit timing registers must be accessed only if the CAN controller is

disabled with the ENA bit of the CANGCON register set to 0.

See Figure 41.

No default value after reset.

IECH 3

IECH 2

IECH 1

IECH 0

Bit Number

Bit Mnemonic

Description

7 - 4

Reserved

The values read from these bits are indeterminate. Do not set these

bits.

3 - 0

IECH3:0

Enable Interrupt by Message Object

0 - disable IT.

1 - enable IT.

IECH3:0 = 0b 0000 1100 -> Enable IT’s of message objects 3 & 2.

BRP 5

BRP 4

BRP 3

BRP 2

BRP 1

BRP 0

Bit Number

Bit Mnemonic

Description

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6 - 1

BRP5:0

Baud Rate Prescaler

The period of the CAN controller system clock Tscl is

programmable and determines the individual bit timing.(1)

Reserved

The value read from this bit is indeterminate. Do not set this bit.

Tscl =

BRP[5..0] + 1

FCAN

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