MEGA128CAN Datasheet, PDF (258/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

• Bit 2 – RTRTAG: Remote Transmission Request Tag
RTR bit of the remote or data frame to send.
This tag is updated with the corresponding value of the remote or data frame received.
• Bit 1 – RB1TAG: Reserved Bit 1 Tag
RB1 bit of the remote or data frame to send.
This tag is updated with the corresponding value of the remote or data frame received.
• Bit 0 – RB0TAG: Reserved Bit 0 Tag
RB0 bit of the remote or data frame to send.
This tag is updated with the corresponding value of the remote or data frame received.
CAN Identifier Mask Registers -
CANIDM1, CANIDM2, CANIDM3,
and CANIDM4
V2.0 part A
Bit
15/7
-
-
IDMSK2
IDMSK10
Bit
31/23
Read/Write
R/W
Initial Value
-
14/6
-
-
IDMSK1
IDMSK9
30/22
R/W
-
13/5
-
-
IDMSK0
IDMSK8
29/21
R/W
-
12/4
-
-
-
IDMSK7
28/20
R/W
-
11/3
-
-
-
IDMSK6
27/19
R/W
-
10/2
RTRMSK
-
-
IDMSK5
26/18
R/W
-
9/1
-
-
-
IDMSK4
25/17
R/W
-
8/0
IDEMSK
-
-
IDMSK3
24/16
R/W
-
CANIDM4
CANIDM3
CANIDM2
CANIDM1
V2.0 part B
Bit
15/7
IDMSK4
IDMSK12
IDMSK20
IDMSK28
Bit
31/23
Read/Write
R/W
Initial Value
-
14/6
IDMSK3
IDMSK11
IDMSK19
IDMSK27
30/22
R/W
-
13/5
IDMSK2
IDMSK10
IDMSK18
IDMSK26
29/21
R/W
-
12/4
IDMSK1
IDMSK9
IDMSK17
IDMSK25
28/20
R/W
-
11/3
10/2
9/1
IDMSK0 RTRMSK
-
IDMSK8 IDMSK7 IDMSK6
IDMSK16 IDMSK15 IDMSK14
IDMSK24 IDMSK23 IDMSK22
27/19
26/18
25/17
R/W
R/W
R/W
-
-
-
8/0
IDEMSK
IDMSK5
IDMSK13
IDMSK21
24/16
R/W
-
CANIDM4
CANIDM3
CANIDM2
CANIDM1
V2.0 part A • Bit 31:21 – IDMSK10:0: Identifier Mask
– 0 - comparison true forced
– 1 - bit comparison enabled.
• Bit 20:3 – Reserved Bits
These bits are reserved for future use. For compatibility with future devices, they must
be written to zero when CANIDMn are written.
• Bit 2 – RTRMSK: Remote Transmission Request Mask
– 0 - comparison true forced
– 1 - bit comparison enabled.
• Bit 1 – Reserved Bit
This bit is reserved for future use. For compatibility with future devices, it must be written
to zero when CANIDTn are written.
258 AT90CAN128
4250E–CAN–12/04