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XRT79L71IB датащи(PDF) 91 Page - Exar Corporation

номер детали XRT79L71IB
подробное описание детали  1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
PDF  109 Pages
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производитель  EXAR [Exar Corporation]
домашняя страница  http://www.exar.com
Logo EXAR - Exar Corporation

XRT79L71IB датащи(HTML) 91 Page - Exar Corporation

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XRT79L71
88
REV. 1.0.0
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
DS3/E3 LIU INTERFACE - LINE SIDE ELECTRICAL CHARACTERISTIC INFORMATION
E3 LINE SIDE PARAMETERS
The XRT79L71 line output at the Transmit Output complies with the pulse template requirements as specified
in ITU-T G.703 for 34.368Mbps operation. The pulse mask as specified in ITU-T G.703 for 34.368Mbps is
shown below in Figure 14.
t10
Clock high to pRD_L high
11
-
-
t11
Clock high to pDBEN_L high
10
-
-
FIGURE 14. PULSE MASK FOR E3 (34.368MBPS) INTERFACE AS PER ITU-T G.703
TABLE 12: E3 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS
PARAMETER
MIN
TYP
MAX
UNITS
TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS
Transmit Output Pulse Amplitude
(Measured at secondary of the transformer)
0.9
1.0
1.1
Vpk
Transmit Output Pulse Amplitude Ratio
0.95
1.00
1.05
Transmit Output Pulse Width
12.5
14.55
16.5
ns
Transmit Intrinsic Jitter (without Jitter Attenuator in theTransmit path)
0.01
0.015
UIPP
TABLE 11: TIMING INFORMATION FOR THE MICROPROCESSOR INTERFACE, WHEN CONFIGURED TO OPERATE IN THE
IBM POWER PC403 MODE
Test Conditions: TA = 25°C, VCC = 3.3V±5% and 2.5V±5%, unless otherwise specified.
TIMING
DESCRIPTION
MIN.TYP.MAX.
0%
50%
V = 100%
14.55ns
N om inal P ulse
12.1ns
(14.55 - 2.45)
17 ns
(14.55 + 2.45)
8.65 ns
10%
10%
20%



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