Atmel ATmega32M1 User Manual

200
7647H–AVR–03/12
Atmel ATmega16/32/64/M1/C1
16.11.4 CAN Identifier Mask Registers -
CANIDM1, CANIDM2, CANIDM3, and CANIDM4
V2.0 part A
V2.0 part B
V2.0 part A
• Bit 31:21 – IDMSK10:0: Identifier Mask
– 0 - comparison true forced - See “Acceptance Filter” on page 180.
– 1 - bit comparison enabled - See “Acceptance Filter” on page 180.
• 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.
• Bit 0 – IDEMSK: Identifier Extension Mask
– 0 - comparison true forced
– 1 - bit comparison enabled.
V2.0 part B
• Bit 31:3 – IDMSK28:0: Identifier Mask
– 0 - comparison true forced - See “Acceptance Filter” on page 180.
– 1 - bit comparison enabled. - See “Acceptance Filter” on page 180.
Bit 15/7 14/6 13/5 12/4 11/3 10/2 9/1 8/0
-----RTRMSK-IDEMSKCANIDM4
--------CANIDM3
IDMSK 2 IDMSK 1 IDMSK 0-----CANIDM2
IDMSK 10 IDMSK 9 IDMSK 8 IDMSK 7 IDMSK 6 IDMSK 5 IDMSK 4 IDMSK 3 CANIDM1
Bit 31/23 30/22 29/21 28/20 27/19 26/18 25/17 24/16
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value--------
Bit 15/7 14/6 13/5 12/4 11/3 10/2 9/1 8/0
IDMSK 4 IDMSK 3 IDMSK 2 IDMSK 1 IDMSK 0 RTRMSK - IDEMSK CANIDM4
IDMSK 12 IDMSK 11 IDMSK 10 IDMSK 9 IDMSK 8 IDMSK 7 IDMSK 6 IDMSK 5 CANIDM3
IDMSK 20 IDMSK 19 IDMSK 18 IDMSK 17 IDMSK 16 IDMSK 15 IDMSK 14 IDMSK 13 CANIDM2
IDMSK 28 IDMSK 27 IDMSK 26 IDMSK 25 IDMSK 24 IDMSK 23 IDMSK 22 IDMSK 21 CANIDM1
Bit 31/23 30/22 29/21 28/20 27/19 26/18 25/17 24/16
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value--------

Atmel ATmega32M1 Specifications

General

Brand	Atmel
Model	ATmega32M1
Category	Microcontrollers
Language	English