CS5461A
6.15 Pulsewidth Register ( PW )
Address: 21
MSB
LSB
2 23
2 22
2 21
2 20
2 19
2 18
2 17
2 16
.....
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Default = 0x000200 = 512 sample periods
PW sets the pulsewidth of E1 and E2 pulses in Alternate Pulse and Mechanical Counter format. The width is a
function of number of sample periods. The default corresponds to a pulsewidth of
512 samples/[(MCLK/K)/1024] = 128 msec with MCLK = 4.096 MHz and K = 1. The value is represented in un-
signed notation.
6.16 E3 Pulse Width Register ( PulseWidth )
Address: 22
MSB
LSB
0
2 22
2 21
2 20
2 19
2 18
2 17
2 16
.....
2 6
2 5
2 4
2 3
2 2
2 1
2 0
E3 pulse width = ---------------------------------------------
Default = 0x000000 = Hardware-generated pulse width (up to 125 ? s)
The PulseWidth register sets the pulse width of E3 pulses in units of 1/OWR.
PulseWidth
? ? MCLK ? ? K ? ? 1024
The range of this register is from 1 to 8388607.
6.17 Voltage Sag Duration Register ( VSAG Duration )
Address: 23
MSB
LSB
0
2 22
2 21
2 20
2 19
2 18
2 17
2 16
.....
2 6
2 5
2 4
2 3
2 2
2 1
2 0
Default = 0x000000
Voltage Sag Duration (VSAG Duration ) defines the number of instantaneous voltage measurements utilized to de-
termine a voltage level sag event (VSAG LEVEL ). Setting this register to zero will disable Voltage Sag-detect. The
value is represented in unsigned notation.
6.18 Voltage Sag Level Register ( VSAG Level )
Address: 24
MSB
LSB
0
2 -1
2 -2
2 -3
2 -4
2 -5
2 -6
2 -7
.....
2 -17
2 -18
2 -19
2 -20
2 -21
2 -22
2 -23
Default = 0x000000
Voltage Sag Level (VSAG Level ) defines the voltage level that the magnitude of input samples, averaged over the
sag duration, must fall below in order to register a sag condition. This value is represented in unsigned notation
and in the range of 0 ? VSAG Level ? 1.0, with the binary point to the right of the MSB.
DS661F3
31
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