參數(shù)資料
型號: XRT79L72IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
中文描述: ATM NETWORK INTERFACE, PBGA456
封裝: 27 X 27 MM, 1 MM PITCH, PLASTIC, BGA-456
文件頁數(shù): 56/72頁
文件大?。?/td> 441K
代理商: XRT79L72IB
XRT79L72
REV. P1.0.2
PRELIMINARY
2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
xr
53
T
ABLE
6: DS3 P
ULSE
M
ASK
E
QUATIONS
T
IME
IN
U
NIT
I
NTERVALS
N
ORMALIZED
A
MPLITUDE
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]
T
ABLE
7: DS3 T
RANSMITTER
L
INE
S
IDE
O
UTPUT
AND
R
ECEIVER
L
INE
S
IDE
I
NPUT
S
PECIFICATIONS
(GR-499)
P
ARAMETER
M
IN
T
YP
M
AX
U
NITS
T
RANSMITTER
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
R
ECEIVER
LINE
SIDE
INPUT
CHARACTERISTICS
Receiver Sensitivity (length of cable)
900
1100
feet
Jitter Tolerance @ 400 KHz (Cat II)
0.15
UI
pp
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
0.18
----T
+
sin
+
·
0.03
0.5 1
π
2 1
0.34
----T
+
sin
+
·
0.03
+
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