MC9S08DZ16 FREESCALE [Freescale Semiconductor, Inc], MC9S08DZ16 Datasheet - Page 240

• Manufacturer Part Number: MC9S08DZ16
• Description: 8-Bit HCS08 Central Processor Unit (CPU)
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
Read: Anytime
Write: Anytime in initialization mode (INITRQ = 1 and INITAK = 1)
12.3.16 MSCAN Identifier Mask Registers (CANIDMR0–CANIDMR7)
The identifier mask register specifies which of the corresponding bits in the identifier acceptance register
are relevant for acceptance filtering. To receive standard identifiers in 32 bit filter mode, it is required to
program the last three bits (AM[2:0]) in the mask registers CANIDMR1 and CANIDMR5 to “don’t care.”
To receive standard identifiers in 16 bit filter mode, it is required to program the last three bits (AM[2:0])
in the mask registers CANIDMR1, CANIDMR3, CANIDMR5, and CANIDMR7 to “don’t care.”
Read: Anytime
Write: Anytime in initialization mode (INITRQ = 1 and INITAK = 1)
240
AC[7:0]
AC[7:0]
Field
Field
7:0
7:0
Figure 12-20. MSCAN Identifier Acceptance Registers (Second Bank) — CANIDAR4–CANIDAR7
Reset
Reset
W
W
R
Figure 12-21. MSCAN Identifier Mask Registers (First Bank) — CANIDMR0–CANIDMR3
R
Acceptance Code Bits — AC[7:0] comprise a user-defined sequence of bits with which the corresponding bits
of the related identifier register (IDRn) of the receive message buffer are compared. The result of this comparison
is then masked with the corresponding identifier mask register.
Acceptance Code Bits — AC[7:0] comprise a user-defined sequence of bits with which the corresponding bits
of the related identifier register (IDRn) of the receive message buffer are compared. The result of this comparison
is then masked with the corresponding identifier mask register.
AM7
AC7
7
0
7
0
Table 12-20. CANIDAR0–CANIDAR3 Register Field Descriptions
Table 12-21. CANIDAR4–CANIDAR7 Register Field Descriptions
AM6
AC6
0
6
0
6
MC9S08DZ60 Series Data Sheet, Rev. 4
AM5
AC5
0
5
0
5
AM4
AC4
0
4
0
4
Description
Description
AM3
AC3
0
0
3
3
AM2
AC2
0
0
2
2
Freescale Semiconductor
AM1
AC1
0
0
1
1
AM0
AC0
0
0
0
0