MEGA128CAN Datasheet, PDF (250/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

CAN Enable MOb Registers -
CANEN2 and CANEN1
Bit
7
6
5
4
3
2
1
0
ENMOB7 ENMOB6 ENMOB5 ENMOB4 ENMOB3 ENMOB2 ENMOB1 ENMOB0 CANEN2
-
ENMOB14 ENMOB13 ENMOB12 ENMOB11 ENMOB10 ENMOB9 ENMOB8 CANEN1
Bit
15
14
13
12
11
10
9
8
Read/Write
R
R
R
R
R
R
R
R
Initial Value
0
0
0
0
0
0
0
0
Read/Write
-
R
R
R
R
R
R
R
Initial Value
-
0
0
0
0
0
0
0
• Bits 14:0 - ENMOB14:0: Enable MOb
This bit provides the availability of the MOb.
It is set to one when the MOb is enabled (i.e. CONMOB1:0 of CANCDMOB register).
Once TXOK or RXOK is set to one (TXOK for automatic reply), the corresponding
ENMOB is reset. ENMOB is also set to zero configuring the MOb in disabled mode,
applying abortion or standby mode.
– 0 - message object disabled: MOb available for a new transmission or
reception.
– 1 - message object enabled: MOb in use.
• Bit 15 – Reserved Bit
This bit is reserved for future use.
CAN Enable Interrupt MOb
Registers -
CANIE2 and CANIE1
Bit
Bit
Read/Write
Initial Value
Read/Write
Initial Value
7
6
5
4
3
2
1
IEMOB7 IEMOB6 IEMOB5 IEMOB4 IEMOB3 IEMOB2 IEMOB1
-
IEMOB14 IEMOB13 IEMOB12 IEMOB11 IEMOB10 IEMOB9
15
14
13
12
11
10
9
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
-
R/W
R/W
R/W
R/W
R/W
R/W
-
0
0
0
0
0
0
0
IEMOB0
IEMOB8
8
R/W
0
R/W
0
CANIE2
CANIE1
• Bits 14:0 - IEMOB14:0: Interrupt Enable by MOb
– 0 - interrupt disabled.
– 1 - MOb interrupt enabled
Note: Example: CANIE2 = 0000 1100_b : enable of interrupts on MOb 2 & 3.
• Bit 15 – Reserved Bit
This bit is reserved for future use. For compatibility with future devices, this must be writ-
ten to zero when CANIE1 is written.
CAN Status Interrupt MOb
Registers - CANSIT2 and
CANSIT1
Bit
Bit
Read/Write
Initial Value
Read/Write
Initial Value
7
SIT7
-
15
R
0
-
-
6
SIT6
SIT14
14
R
0
R
0
5
SIT5
SIT13
13
R
0
R
0
4
SIT4
SIT12
12
R
0
R
0
3
SIT3
SIT11
11
R
0
R
0
2
SIT2
SIT10
10
R
0
R
0
1
SIT1
SIT9
9
R
0
R
0
0
SIT0
SIT8
8
R
0
R
0
CANSIT2
CANSIT1
250 AT90CAN128
4250E–CAN–12/04