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6.5 d64h_OREQ_width_set
VC6
short d64h_OREQ_width_set (BYTE bCardID, U16 wOREQWidth)
VB6
d64h_OREQ_width_set (ByVal bCardID As Byte, ByVal wOREQWidth As Integer) As Integer
Description:
This function set the width of O_REQ output signal.
Parameters:
bCardID: The specific Card ID that is configured with the on-board Dip-Switch.
wOREQWidth: the delay factor for digital filter ( 0
≦
wOREQWidth
≦
7 ).
Width of O_REQ = ( 2^ (wORE 1) ) * 25ns
Notice:
The period of O_REQ signal will be twice as long as the time at high-level. Please take the output
update-rate into consideration when you set this parameter.
Assuming the output date is updated at 1MHz, the maximum period of O_REQ signal is 1000ns.
Therefore,
2 * (2 ^ ((wORE 1) ) * 25ns)
≦
1000ns
2 ^ ((wORE 1) )
≦
20, wOREQWidth < 4
Notice:
The period of O_REQ signal will be twice longer than the time at high-level. Therefore, please take
the output update-rate into consideration when you set this parameter
The period of O_REQ signal will be twice longer than the time at high-level. Therefore, please take
the output update-rate into consideration when you set this parameter.
(O_REQ Period > 2 * ( 2^ (wORE 1) ) * 25ns )
Return Code:
SUCCESS_NO_ERROR: The function returns successfully.
ERROR_INVALID_CARD_ID: There is no active PCI-D64HU card configured with bCardID, or the
given Card ID is invalid (for instance, Card ID is assigned to 254).
ERROR_INVALID_OREG_WIDTH: Indicates the width-setting is out of range.
PCI-D64HU Function Reference Version
48
Содержание PCI-D64HU
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