NXP Semiconductors MC9S12G - Page 583

Scalable Controller Area Network (S12MSCANV3)
MC9S12G Family Reference Manual Rev.1.27
NXP Semiconductors 585
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).
18.3.2.9 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
76543210
R0 0 0 0 0
TXEIE2 TXEIE1 TXEIE0
W
Reset:00000000
= Unimplemented
Figure 18-11. MSCAN Transmitter Interrupt Enable Register (CANTIER)
Table 18-14. 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
76543210
R0 0 0 0 0
ABTRQ2 ABTRQ1 ABTRQ0
W
Reset:00000000
= Unimplemented
Figure 18-12. MSCAN Transmitter Message Abort Request Register (CANTARQ)