Rainbow Electronics ATmega64C1 - Manual (Page 198)

198
7647A–AVR–02/08
ATmega32/64/M1/C1
V2.0 part B
V2.0 part A
• Bit 31:21 – IDMSK10:0: Identifier Mask
– 0 - comparison true forced - See “Acceptance Filter” on page 179.
– 1 - bit comparison enabled - See “Acceptance Filter” on page 179.
• 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 179.
– 1 - bit comparison enabled. - See “Acceptance Filter” on page 179.
• Bit 2 – RTRMSK: Remote Transmission Request Mask
– 0 - comparison true forced
– 1 - bit comparison enabled.
• Bit 1 – Reserved Bit
Writing zero in this bit is recommended.
• Bit 0 – IDEMSK: Identifier Extension Mask
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
IDMSK4 IDMSK3 IDMSK2 IDMSK1 IDMSK0 RTRMSK - IDEMSK CANIDM4
IDMSK12 IDMSK11 IDMSK10 IDMSK9 IDMSK8 IDMSK7 IDMSK6 IDMSK5 CANIDM3
IDMSK20 IDMSK19 IDMSK18 IDMSK17 IDMSK16 IDMSK15 IDMSK14 IDMSK13 CANIDM2
IDMSK28 IDMSK27 IDMSK26 IDMSK25 IDMSK24 IDMSK23 IDMSK22 IDMSK21 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 - - - - - - - -