MC68HC908GZ8 Datasheet, PDF (185/344 Pages) Motorola, Inc – Microcontrollers

MSCAN08 Controller (MSCAN08)
Programmer’s Model of Control Registers
Addr.
Register
Bit 7
6
5
4
3
2
1
Bit 0
$0515
Read:
CIDMR1 _Write:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
$0516
Read:
CIDMR2 _Write:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
$0517
CIDMR3
Read:
Write:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
= Unimplemented
R
= Reserved
Figure 16-14. MSCAN08 Control Register Structure (Sheet 3 of 3)
16.13.1 MSCAN08 Module Control Register 0
Address: $0500
Bit 7
Read:
0
Write:
Reset:
0
6
5
4
0
0
SYNCH
0
0
0
= Unimplemented
3
TLNKEN
0
2
SLPAK
0
1
SLPRQ
0
Figure 16-15. Module Control Register 0 (CMCR0)
Bit 0
SFTRES
1
SYNCH — Synchronized Status
This bit indicates whether the MSCAN08 is synchronized to the CAN bus and
as such can participate in the communication process.
1 = MSCAN08 synchronized to the CAN bus
0 = MSCAN08 not synchronized to the CAN bus
TLNKEN — Timer Enable
This flag is used to establish a link between the MSCAN08 and the on-chip timer
(see 16.9 Timer Link).
1 = The MSCAN08 timer signal output is connected to the timer input.
0 = The port is connected to the timer input.
SLPAK — Sleep Mode Acknowledge
This flag indicates whether the MSCAN08 is in module internal sleep mode. It
shall be used as a handshake for the sleep mode request (see 16.8.1
MSCAN08 Sleep Mode). If the MSCAN08 detects bus activity while in sleep
mode, it clears the flag.
1 = Sleep – MSCAN08 in internal sleep mode
0 = Wakeup – MSCAN08 is not in sleep mode
MC68HC908GZ8
Freescale Semiconductor
MSCAN08 Controller (MSCAN08)
Data Sheet
185