Users Guide: DS80C390 Supplement Manual
High-Speed Microcontroller User’s Guide: DS80C390 Supplement 
33 of 158 
CAN 0 TRANSMIT MESSAGE ACKNOWLEDGEMENT REGISTER 1 (C0TMA1) 
  7 6 5 4 3 2 1 0 
SFR 9Fh        
  R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0 
R = Unrestricted Read, -n = Value after Reset 
CAN 0 Transmit Message Acknowledgement Register 1. This register 
indicates which of CAN 0 message centers 9-15 have successfully 
transmitted a message since the last read of this register. A logic one in a 
location indicates a message has been transmitted for that message center. 
This register is automatically cleared to 00h when read. This register should 
always be read in conjunction with the C0TMA0 register to ascertain the 
status of all message centers. 
Bit 7  Reserved 
C0TMA1.6 
Bit 6 
Message Center 15, Message Transmitted 
C0TMA1.5 
Bit 5 
Message Center 14, Message Transmitted 
C0TMA1.4 
Bit 4 
Message Center 13, Message Transmitted 
C0TMA1.3 
Bit 3 
Message Center 12, Message Transmitted 
C0TMA1.2 
Bit 2 
Message Center 11, Message Transmitted 
C0TMA1.1 
Bit 1 
Message Center 10, Message Transmitted 
C0TMA1.0 
Bit 0 
Message Center 9, Message Transmitted 










