s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 141

• Manufacturer Part Number: s908gz60cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
2. Two identifier acceptance filters, each to be applied to:
3. Four identifier acceptance filters, each to be applied to the first eight bits of the identifier. This mode
4. Closed filter. No CAN message will be copied into the foreground buffer RxFG, and the RXF flag
Figure 12-5
filter 0 and 1 hits.
implements four independent filters for the first eight bits of a CAN 2.0A/B compliant standard
identifier.
produces filter 0 to 3 hits.
will never be set.
a. The 14 most significant bits of the extended identifier plus the SRR and the IDE bits of
b. The 11 bits of the identifier plus the RTR and IDE bits of CAN 2.0A/B messages.
CAN2.0B messages, or
Figure 12-6
AM7
AC7
ID28
ID10
AM7
AC7
AM7
AC7
ID28
ID10
Figure 12-4. Single 32-Bit Maskable Identifier Acceptance Filter
shows how the 32-bit filter bank (CIDAR0–CIDAR3 and CIDMR0–CIDMR3) produces
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
CIDMR0
CIDAR0
CIDMR0
CIDMR2
CIDAR0
CIDAR2
Figure 12-5. 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–CIDAR3 and CIDMR0–CIDMR3)
AM0
ID21
AC0
AM0
AM0
ID21
AC0
AC0
ID3
ID3
AM7
AC7
ID20
ID2
AM7
AC7
AM7
AC7
ID20
ID2
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
AM7
AC7
ID6
ID10
ID6
ID10
CIDMR3
CIDAR3
IDR3
IDR3
IDR3
IDR3
Identifier Acceptance Filter
RTR
AM0
RTR
AC0
ID3
ID3
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