Chapter 16 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
619
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).
Read: Anytime
Write: Anytime when not in initialization mode
16.3.2.9
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).
Read: Anytime
Write: Anytime when not in initialization mode
Module Base + 0x0007
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 16-11. MSCAN Transmitter Interrupt Enable Register (CANTIER)
Table 16-13. 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
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 16-12. MSCAN Transmitter Message Abort Request Register (CANTARQ)
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