atmega32c1 ATMEL Corporation, atmega32c1 Datasheet - Page 197

• Manufacturer Part Number: atmega32c1
• Description: Atmega32m1 Automotive 8-bit Avr Microcontroller With 32k/64k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

16.11.4
7647A–AVR–02/08
CAN Identifier Mask Registers -
CANIDM1, CANIDM2, CANIDM3, and CANIDM4
V2.0 part B
These bits are reserved for future use. For compatibility with future devices, they must be written
to zero when CANIDTn are written.
When a remote or data frame is received, these bits do not operate in the comparison but they
are updated with un-predicted values.
• 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. In case
of Automatic Reply mode, this bit is automatically reset before sending the response.
• 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.
When a remote or data frame is received, this bit does not operate in the comparison but it is
updated with un-predicted values.
• 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.
• Bit 31:3 – IDT28:0: Identifier Tag
Identifier field of the remote or data frame to send.
This field is updated with the corresponding value of the remote or data frame received.
• 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. In case
of Automatic Reply mode, this bit is automatically reset before sending the response.
• 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.
Bit
V2.0 part A
IDMSK10
IDMSK2
15/7
-
-
IDMSK1
IDMSK9
14/6
-
-
IDMSK0
IDMSK8
13/5
-
-
IDMSK7
12/4
-
-
-
IDMSK6
11/3
-
-
-
RTRMSK
IDMSK5
10/2
ATmega32/64/M1/C1
-
-
IDMSK4
9/1
-
-
-
IDEMSK
IDMSK3
8/0
-
-
CANIDM4
CANIDM3
CANIDM2
CANIDM1
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