XRT75L00
REV. 1.0.2
E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
21
TABLE 6: DS3 PULSE MASK EQUATIONS
TIME IN UNIT INTERVALS
NORMALIZED AMPLITUDE
LOWER CURVE
-0.85
< T < -0.36
- 0.03
-0.36
< T < 0.36
0.36
< T < 1.4
- 0.03
UPPER CURVE
-0.85
< T < -0.68
0.03
-0.68
< T < 0.36
0.36
< T < 1.4
0.08 + 0.407 x e-1.84[T-0.36]
TABLE 7: DS3 TRANSMITTER AND RECEIVER LINE SIDE SPECIFICATIONS (TA = 250C AND VDD = 3.3V ± 5%)
PARAMETER
MIN
TYP
MAX
UNITS
TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS
Transmit Output Pulse Amplitude
(measured with TxLEV = 0)
0.65
0.75
0.85
Vpk
Transmit Output Pulse Amplitude
(measured with TxLEV = 1)
0.90
1.00
1.10
Vpk
Transmit Output Pulse Width
10.10
11.18
12.28
ns
Transmit Output Pulse Amplitude Ratio
0.90
1.00
1.10
Intrinsic Jitter
0.02
0.05
UIpp
RECEIVER LINE SIDE INPUT CHARACTERISTICS
Receiver Sensitivity (length of cable)
900
1100
feet
Jitter Tolerance @ 400 KHz (Cat II)
0.15
0.60
UIpp
Signal Level to Declare Loss of Signal
Refer to Table 10
Signal Level to Clear Loss of Signal
Refer to Table 10
0.5 1
π
2
---1
T
0.18
----------
0.03
–
+
sin
+
0.5 1
π
2
--- 1
T
0.34
----------
0.03
++
sin
+