XRT79L71_07 Datasheet, PDF (93/109 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE

REV. 1.0.0
XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
TABLE 13: DS3 PULSE MASK EQUATIONS
TIME IN UNIT INTERVALS
NORMALIZED AMPLITUDE
LOWER CURVE
-0.85 < T < -0.36
- 0.03
-0.36 < T < 0.36
·
0.5
1
+
sin
⎩⎨⎧ ^2-π-
⎝⎛ ¹
+
0----.-T-1---8--^⎠⎞
⎫
⎬
⎭
– 0.03
0.36 < T < 1.4
-0.85 < T < -0.68
-0.68 < T < 0.36
- 0.03
UPPER CURVE
0.03
·
0.5
1
+
sin
⎧
⎨
⎩
2-^π-
⎛
⎝
1
+
0----.-T-3---4--
⎞
⎠
⎫
⎬
⎭
+ 0.03
0.36 < T < 1.4
0.08 + 0.407 x e^{-1.84[T-0.36]}
TABLE 14: DS3 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS (GR-499)
PARAMETER
MIN
TYP
MAX
UNITS
TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS
Transmit Output Pulse Amplitude
(measured with TxLEV = 0)
0.65
0.75
0.85
V_pk
Transmit Output Pulse Amplitude
(measured with TxLEV = 1)
0.9
1.0
1.1
V_pk
Transmit Output Pulse Width
10.10
11.18
12.28
ns
Transmit Output Pulse Amplitude Ratio
0.9
1.0
1.1
Transmit Intrinsic Jitter ( without Jitter Attenuator in Transmit path)
0.01
0.015
UI_pp
Transmit Intrinsic Jitter ( withJitter Attenuator in Transmit path)
0.02
0.04
UI_pp
RECEIVER LINE SIDE INPUT CHARACTERISTICS
Receiver Sensitivity (length of cable)
900
1100
feet
Jitter Tolerance @ 400 KHz (Cat II)
Signal Level to Declare Loss of Signal
0.15
UI_pp
Refer to Table 10
Signal Level to Clear Loss of Signal
Refer to Table 10
90