Advantech PC-LabCard PCI-1784 - Manual (Page 37)

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C.3 Counter 0/1/2/3 mode — BASE+00/04/08/0CH
Table C-2 PCI-1784 Register for counter 0/1/2/3 mode
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Base Addr.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Counter 0 Mode
DI3 DI2 DI1 DI0 TM IX SW DF UL OL RF M2 M1 M0 00H W
Counter 1 Mode
DI3 DI2 DI1 DI0 TM IX SW DF UL OL RF M2 M1 M0 04H W
Counter 2 Mode
DI3 DI2 DI1 DI0 TM IX SW DF UL OL RF M2 M1 M0 08H W
Counter 3 Mode
DI3 DI2 DI1 DI0 TM IX SW DF UL OL RF M2 M1 M0 0CH W
M2 ~ M0 Counter input mode control
000 Disable
001 Quadrature input x 1
010 Quadrature input x 2
011 Quadrature input x 4
100 2 pulse input
101 1 pulse input
110 N/A
111 N/A
RF Set counter reset value
0 80000000h
1 00000000h
OL Counter overflow lock control
0 Counter continues counting (wraps over) when
counter overflow
1 Counter locked when counter overflow