s908az32ag2cfue Freescale Semiconductor, Inc, s908az32ag2cfue Datasheet - Page 268

• Manufacturer Part Number: s908az32ag2cfue
• Description: M68hc08 Microcontrollers 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MSCAN Controller (MSCAN08)
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Two identifier acceptance filters, each to be applied to a) the 14 most significant bits of the
extended identifier plus the SRR and the IDE bits of CAN2.0B messages, or b) the 11 bits of the
identifier plus the RTR and IDE bits of CAN 2.0A/B messages.
filter bank (CIDAR0-3, CIDMR0-3) produces filter 0 and 1 hits.
Four identifier acceptance filters, each to be applied to the first eight bits of the identifier. This mode
implements four independent filters for the first eight bits of a CAN 2.0A/B compliant standard
identifier.
3 hits.
Closed filter. No CAN message will be copied into the foreground buffer RxFG, and the RXF flag
will never be set.
Figure 24-5
AM7
AC7
ID28
ID10
AM7
AC7
AM7
AC7
ID28
ID10
Figure 24-3. Single 32-Bit Maskable Identifier Acceptance Filter
CIDMR0
CIDAR0
CIDMR0
CIDMR2
CIDAR0
CIDAR2
Figure 24-4. Dual 16-Bit Maskable Acceptance Filters
IDR0
IDR0
IDR0
IDR0
ID ACCEPTED (FILTER 0 HIT)
ID ACCEPTED (FILTER 1 HIT)
shows how the 32-bit filter bank (CIDAR0-3, CIDMR0-3) produces filter 0 to
AM0
ID21
AC0
AM0
AM0
ID21
AC0
AC0
ID3
ID3
AM7
AC7
ID20
ID2
AM7
AC7
AM7
AC7
ID20
ID2
MC68HC908AZ32A Data Sheet, Rev. 2
CIDMR1
CIDAR1
CIDMR1
CIDMR3
CIDAR1
CIDAR3
IDR1
IDR1
IDR1
IDR1
ID Accepted (Filter 0 Hit)
IDE
IDE
AM0
AM0
AM0
ID15
ID15
AC0
AC0
AC0
AM7
AC7
ID14
ID10
ID14
ID10
CIDMR2
CIDAR2
IDR2
IDR2
IDR2
IDR2
AM0
AC0
ID7
ID3
ID7
ID3
Figure 24-4
AM7
AC7
ID6
ID10
ID6
ID10
CIDMR3
CIDAR3
IDR3
IDR3
IDR3
IDR3
shows how the 32-bit
Freescale Semiconductor
RTR
AM0
RTR
AC0
ID3
ID3