Rainbow-electronics T89C51CC01 Instrukcja Użytkownika Pobierz pdf (Strona 93)

T89C51CC01

Rev. D – 17-Dec-01

Table 49. CANIE2 Register

CANIE2 (S:C3h)

CAN Enable Interrupt message

object Registers 2

Reset Value: 0000 0000b

Table 50. CANBT1 Register

CANBT1 (S:B4h)

CAN Bit Timing Registers 1

Note: The CAN controller bit timing registers must be accessed only if the CAN controller is dis-

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

See Figure 35.

No default value after reset.

76543210

IECH 7 IECH 6 IECH 5 IECH 4 IECH 3 IECH 2 IECH 1 IECH 0

Bit

Number

Bit

Mnemonic Description

7-0 IECH7:0

Enable interrupt by message object

0 - disable IT.

1 - enable IT.

IECH7:0 = 0b 0000 1100 -> Enable IT’s of message objects 3 & 2.

76543210

- 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.

Reserved

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

Tscl =

BRP[5..0] + 1

Fcan

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 148 149

T89C51CC01 1

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