MC912DG128ACPVE Datasheet, PDF (351/478 Pages) Freescale Semiconductor, Inc – Upward compatible with M68HC11 instruction set

Freescale Semiconductor, Inc.
MSCAN Controller
Programmer’s Model of Control Registers
18.13 Programmer’s Model of Control Registers
18.13.1 Overview
The programmer’s model has been laid out for maximum simplicity and
efficiency.
18.13.2 msCAN12 Module Control Register (CMCR0)
CMCR0 R
$0100 W
RESET
Bit 7
0
0
6
5
4
3
2
1
Bit 0
0
SYNCH
SLPAK
CSWAI
TLNKEN
SLPRQ SFTRES
0
1
0
0
0
0
1
CSWAI — CAN Stops in Wait Mode
0 = The module is not affected during WAIT mode.
1 = The module ceases to be clocked during WAIT mode.
SYNCH — Synchronized Status
This bit indicates whether the msCAN12 is synchronized to the CAN
bus and as such can participate in the communication process.
0 = msCAN12 is not synchronized to the CAN bus
1 = msCAN12 is synchronized to the CAN bus
TLNKEN — Timer Enable
This flag is used to establish a link between the msCAN12 and the on-
chip timer (see Timer Link).
0 = The port is connected to the timer input.
1 = The msCAN12 timer signal output is connected to the timer
input.
SLPAK — SLEEP Mode Acknowledge
This flag indicates whether the msCAN12 is in module internal
SLEEP Mode. It shall be used as a handshake for the SLEEP Mode
request (see msCAN12 SLEEP Mode).
0 = Wake-up – The msCAN12 is not in SLEEP Mode.
1 = SLEEP – The msCAN12 is in SLEEP Mode.
MC68HC912DT128A — Rev 4.0
MOTOROLA
MSCAN Controller
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Technical Data
351