North Atlantic 75DS2, Operation Manual

Page: 18 / 43

D/S One/Two Channel (Modules 1*, 2*, 3*, 4*)
75DS2 Operations Manual North Atlantic Industries, Inc. 11/11/2011
Rev: 2011-11-11-1000 www.naii.com Page 18 of 43
Signal Loss Interrupt Enable
Set the bit to enable interrupts for the corresponding channel. When enabled, a signal input loss ( D/S Status,
Signal Los
s) will trigger an interrupt. Default is “0” to disable interrupt on all channels. When Status Interrupt is
enabled, Status Interrupt is reported through the Signal Loss Interrupt Vector .
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Signal Loss Interrupt Enable
X
X X X X X
X
X X X X X X X
CH2 CH1
BIT Test Fail Interrupt Enable
Set the bit to enable interrupts for the corresponding channel. When enabled, a BIT Test Failure ( D/S Status, BIT
Test
) will trigger an interrupt. Default is “0” to disable interrupt on all channels. When Status Interrupt is enabled,
Status Interrupt is reported through the BIT Test Loss Interrupt Vector .
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
BIT Test Fail Interrupt Enable
X
X X X X X
X
X X X X X X X
CH2 CH1
Phase Lock Loss Interrupt Enable
Set the bit to enable interrupts for the corresponding channel. When enabled, a Phase Lock Loss (D/S Status,
Phase Lock Loss) will trigger an
interrupt. Default is “0” to disable interrupt on all channels. When Status Interrupt
is enabled, Status Interrupt is reported through the Phase Lock Loss Interrupt Vector.
-
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Phase Lock Loss Interrupt Enable
X X X X X X X X X X X X X X CH2 CH1
OSC (Optional Onboard Reference Supply) Set Frequency
Type: 16-bit unsigned integer
Range: 47 to 10,000 Hz
Read/Write: R/W
Initialized Value: N/A
Program Reference Frequency, where LSB is 0.01 Hz. For example: To program 400 Hz, 400 x 100= 40,000,
which equals 0x9C40. In this example, 0x0000 would be programmed in the Reference Frequency High register,
and 0x9C40 would be programmed in the Reference Frequency Low register. To program 10,000 Hz, 10,000 x
100= 1,000,000, which equals 0xF4240. In this example, 0x000F would be programmed in the Reference
Frequency High register, and 0x4240 would be programmed in the Reference Frequency Low register.
REGISTER D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
327.
68
163.
84
81.
92
40.
96
20.
48
10.
24
5.
12
2.
56
1.
28
0.
64
0.
32
0.
16
0.
08
0.
04
0.
02
0.
01
approximate value
REF FREQUENCY LO
D D D D D D D D D D D D D D D D
D=DATA BIT (Hz)
REGISTER D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
0 0 0 0 0 0 0 0 0 0 0 0
5242.
88
2621.
44
1310.
72
655.
36
approximate value
REF FREQUENCY HI
D D D D D D D D D D D D D D D D
D=DATA BIT (Hz)