Rainbow Electronics T89C51CC02 - Manual (Page 86)

86 Rev.A - May 17, 2001
Preliminary
T89C51CC02
CANSIT (S:BBh Read Only)
CAN Status Interrupt message object Registers
Reset Value: xxxx 0000b
Figure 72. CANSIT Register
CANIE (S:C3h)
CAN Enable Interrupt message object Registers
Reset Value: xxxx 0000b
Figure 73. CANIE Register
7 6 5 4 3 2 1 0
- - - - SIT3 SIT2 SIT1 SIT0
Bit Number Bit Mnemonic Description
7-4 -
Reserved
The value read from these bit are indeterminate. Do not set these bits.
3-0 SIT3:0
Status of interrupt by message object
0 - no interrupt.
1 - IT turned on. Reset when interrupt condition is cleared by user.
example: CANSIT = 0b 0000 1001 -> IT’s on message objects 3 & 0.
see Figure 59.
7 6 5 4 3 2 1 0
- - - - IECH 3 IECH 2 IECH 1 IECH 0
Bit Number Bit Mnemonic Description
7-4 -
Reserved
The value read from these bit are indeterminate. Do not set these bits.
3-0 IECH3:0
Enable interrupt by message object
0 - disable IT.
1 - enable IT.
example: CANIE= 0b 0000 1100 -> Enable IT’s of message objects 3 & 0.