59
Appendix C
C.14 Timer/Counter Enable — BASE+0AH
Write register BASE+0AH enables or disables the PCL-818HD/HG/L's
timer/counter.
T
able C-14 Register for Timer/Counter Enable
TC0 Disable/enable pacer
0 Pacer
enabled
1
Pacer controlled by TRIG0. This blocks trigger pulses sent from the
pacer to the A/D until TRIG0 is taken high.
TC1 Counter 0 input source mode
0
Sets Counter 0 to accept external clock pulses
1
Connects Counter 0 internally to a 100 KHz clock source
C.15 Programmable Timer/Counter — BASE+0C~0FH
The four registers located at addresses BASE+0CH, BASE+0DH,
BASE+0EH and BASE+0FH are used for the Intel 8254 programmable
timer/counter. Please refer to the 8254 product literature for detailed
application information.
Write
Timer/Counter enable
Bit #
7
6
5
4
3
2
1
0
BASE + 0AH
TC1
TC0
Summary of Contents for PCL-818 Series
Page 1: ...PCL 818 Series 12 bit ISA Multifunction Card User Manual ...
Page 14: ...PCL 818 Series User Manual 6 Figure 1 1 Installation Flow Chart ...
Page 28: ...PCL 818 Series User Manual 20 ...
Page 45: ...2 APPENDIX A Specifications ...
Page 49: ...2 APPENDIX B Block Diagram ...
Page 51: ...2 APPENDIX C Register Structure Format ...
Page 71: ...2 APPENDIX D Calibration ...