Maxim Integrated High-Speed Microcontroller Users Guide: Network Microcontroller Supplement User Manual
Page 42
High-Speed Microcontroller User’s
Guide: Network Microcontroller
Supplement
42
CAN 0 Transmit Message Acknowledgment Register 1 (C0TMA1)
7
6
5
4
3
2
1
0
SFR 9Fh
—
C0TMA1.6
C0TMA1.5
C0TMA1.4
C0TMA1.3
C0TMA1.2
C0TMA1.1
C0TMA1.0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R = Unrestricted read, -n = Value after reset. The C0TMA0 is cleared to 00h on all forms of reset, including the reset established by the CRST bit.
This SFR is not present on the DS80C411.
C0TMA1.6–0
Bits 7-0
Bit 7
C0TMA1.6
Bit 6
C0TMA1.5
Bit 5
C0TMA1.4
Bit 4
C0TMA1.3
Bit 3
C0TMA1.2
Bit 2
C0TMA1.1
Bit 1
C0TMA1.0
Bit 0
CAN 0 transmit message acknowledgment register 1. The C0TMA1 bits indicate which message cen-
ter (1–8) has been successfully transmitted. The contents of the C0TMA1 register are updated each time
a new message is successfully transmitted. The contents of the C0TMA1 register are automatically
cleared following each read of C0TMA1 by the microcontroller. A bit value of 1 indicates that the
assigned message center has been successfully transmitted since the last read of the C0TMA1 regis-
ter. A bit value of 0 indicates that no new message has been successfully transmitted since the last read
of the C0TMA1 register. The corresponding C0TMA1 bits are assigned to the following message cen-
ters. No interrupts are asserted because of the C0TMA1 settings. This register works fully independent
of the status bits in the CAN status register and the INTIN7–0 vector in the CAN interrupt register, as well
as of the INTRQ bit in the CAN message control registers (same as C0TMA0).
Reserved.
Message center 15, message transmitted.
Message center 14, message transmitted.
Message center 13, message transmitted.
Message center 12, message transmitted.
Message center 11, message transmitted.
Message center 10, message transmitted.
Message center 9, message transmitted.
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