Advantech PCM-3780 Appendix A Specifications................................................. 26, Appendix D Waveform of Each Mode.............................. 44

PCM-3780 User Manual viii
3.6.2 Using Direct I/O ........................................................... 24
Figure 3.5:Frequency Measurement ................. ...........24
Appendix A Specifications................................................. 26
A.1 Programmable Counter................................................... 26
A.2 Digital Input/Output........................................................26
A.3 General............................................................................27
Appendix B Block Diagram............................................... 30
Appendix C Register Structure & Format....................... 32
C.1 Overview.........................................................................32
C.2 I/O Port Address Map..................................................... 32
C.2.1 Register Format ............................................................33
Table C.1:Register Offset Address Table .................... 33
C.3 Counter 0/1 Mode Register............................................. 35
C.4 Counter 0/1 Load Register:............................................. 37
C.5 Counter 0/1 Hold Register...............................................37
C.6 Counter 0/1 Command Register......................................38
C.7 Counter Command Enable Register................................38
C.8 Interrupt Control Register............................................... 39
C.9 Interrupt Status Register..................................................39
C.10 Interrupt Clear Register...................................................40
C.11 I/O Direction Control Register........................................40
C.12 Port A/B/C Interrupt Status Register...............................40
C.13 FOUT Register................................................................41
Appendix D Waveform of Each Mode.............................. 44
D.1 Counter Mode Descriptions............................................ 44
Table D.1:PCM-3780 Counter Mode .................... ......45
Table D.2:PCM-3780 Counter Mode .................... ......46
D.2 Mode A Waveforms........................................................47
D.3 Mode B Waveforms ....................................................... 48
D.4 Mode C Waveforms........................................................49
D.5 Mode D Waveforms .......................................................50
D.6 Mode E Waveforms........................................................ 51
D.7 Mode F Waveforms ........................................................52
D.8 Mode G Waveforms........................................................53
D.9 Mode H Waveforms........................................................54
D.10 Mode I Waveforms..........................................................55
D.11 Mode J Waveforms......................................................... 56
D.12 Mode K Waveforms........................................................57
D.13 Mode L Waveforms........................................................ 58
D.14 Mode O Waveforms .......................................................59
D.15 Mode R Waveforms........................................................60
D.16 Mode U Waveforms........................................................61
D.17 Mode X Waveforms .......................................................62