mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 349

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC08QA24
Freescale Semiconductor
The background buffer, RxBG, will be copied into the foreground buffer,
RxFG, and the RxF flag will be set only in case of an accepted identifier
(an identifier acceptance filter hit). A hit also will cause a receiver
interrupt if enabled.
A filter hit is indicated to the application software by a set RXF (receiver
buffer full flag, see
bits in the identifier acceptance control register (see
Identifier Acceptance Control
(IDHIT1–IDHIT0) clearly identify the filter section that caused the
acceptance. They simplify the application software’s task to identify the
cause of the receiver interrupt. When more than one hit occurs (two or
more filters match), the lower hit has priority.
AC7
AC7
AC7
AC7
ID28
ID10
Figure 22-4. Dual 16-Bit Maskable Acceptance Filters
CIDMR0
CIDMR2
CIDAR0
CIDAR2
IDR0
IDR0
ID ACCEPTED (FILTER 0 HIT)
ID ACCEPTED (FILTER 1 HIT)
ID21
AC0
AC0
AC0
AC0
ID3
CAN Controller
22.14.5 MSCAN08 Receiver Flag
AC7
AC7
AC7
AC7
ID20
ID2
CIDMR1
CIDMR3
CIDAR1
CIDAR3
IDR1
IDR1
IDE
Register). These identifier hit flags
ID15
AC0
AC0
AC0
AC0
ID14
ID10
IDR2
IDR2
ID7
ID3
22.14.9 MSCAN08
ID6
ID10
Register) and two
CAN Controller
Technical Data
IDR3
IDR3
RTR
ID3
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