I/O Port Bit Assignment
CNT24-4D(PCI)
44
Interrupt Mask (Command 15H)
15H
TIME
CH2
CH1
CH0
CH3
D7
D6
D5
D4
D3
D2
D1
D0
Not in use
Output 15H to output port +0 and set the mask with output port +1.
Setting an appropriate bit to "1" inhibits interrupt signals to be
generated.
TIME
Set to "1" to inhibit interrupts to be generated
when the time set on the programmable timer
elapses. Set to "0" to cancels the inhibition of
interrupts.
CH3-CH0
Correspond to each channel. Set each to "1" to
inhibit interrupts to be generated when the count
matches. Set to "0" to cancel the inhibition of
interrupts.
Note!
- The initial state is set to mask all channels with the timer (1FH).
- Even in masked state, each channel's count match and timer's
time-up statuses do change.
Sense Reset (Command 16H)
16H
TIME
Not in use
CH2
CH1
CH0
CH3
D7
D6
D5
D4
D3
D2
D1
D0
During interrupt sensing an appropriate bit is set to "1" when the
count of each channel matches or when the time set on the timer
expires. If the appropriate bit is set to "1," no interrupt signal is
generated when the count matches or the set time expires the next
time. Output of 16H to output port +0 and output of "1" to the
appropriate bit of output port +1 clear the sense bit, allowing the
next interrupt signal to be generated.
TIME
Resets the sense bit when the time set on the
programmable timer expires.
CH3-CH0
Reset the count match sense bit of each channel.
Summary of Contents for CNT24-4D(PCI)
Page 1: ...CNT24 4D PCI 24Bit Differencial Up Down Counter Board for PCI User s Guide ...
Page 29: ...Board Setup CNT24 4D PCI 20 ...
Page 63: ...I O Port Bit Assignment CNT24 4D PCI 54 ...
Page 66: ...Board Specifications CNT24 4D PCI 57 External Dimensions 176 4 107 0 mm ...
Page 67: ...Board Specifications CNT24 4D PCI 58 ...