Chapter 12 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12ZVM Family Reference Manual Rev. 1.3
420
Freescale Semiconductor
NOTE
The CANTIER register is held in the reset state when the initialization mode
is active (INITRQ = 1 and INITAK = 1). This register is writable when not
in initialization mode (INITRQ = 0 and INITAK = 0).
12.3.2.9
MSCAN Transmitter Message Abort Request Register (CANTARQ)
The CANTARQ register allows abort request of queued messages as described below.
NOTE
The CANTARQ register is held in the reset state when the initialization
mode is active (INITRQ = 1 and INITAK = 1). This register is writable when
not in initialization mode (INITRQ = 0 and INITAK = 0).
Module Base + 0x0007
Access: User read/write
(1)
1. Read: Anytime
Write: Anytime when not in initialization mode
7
6
5
4
3
2
1
0
R
0
0
0
0
0
TXEIE2
TXEIE1
TXEIE0
W
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 12-11. MSCAN Transmitter Interrupt Enable Register (CANTIER)
Table 12-13. CANTIER Register Field Descriptions
Field
Description
2-0
TXEIE[2:0]
Transmitter Empty Interrupt Enable
0 No interrupt request is generated from this event.
1 A transmitter empty (transmit buffer available for transmission) event causes a transmitter empty interrupt
request.
Module Base + 0x0008
Access: User read/write
(1)
1. Read: Anytime
Write: Anytime when not in initialization mode
7
6
5
4
3
2
1
0
R
0
0
0
0
0
ABTRQ2
ABTRQ1
ABTRQ0
W
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 12-12. MSCAN Transmitter Message Abort Request Register (CANTARQ)
