82V2082PF IDT, Integrated Device Technology Inc, 82V2082PF Datasheet - Page 20

• Manufacturer Part Number: 82V2082PF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2082PF

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Package Type: TQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

the T1.102 and the measuring diagram is shown in Figure-7. This also
meets the requirement of G.703, 2001. The cable length is divided into five
grades, and there are five pulse templates used for each of the cable length.
The pulse template is selected by PULS[3:0] bits (TCF1, 05H...).
FUNCTIONAL DESCRIPTION
IDT82V2082
Note: 1. For R
For T1 applications, the pulse shape is shown in
2. For R
Figure-4 E1 Waveform Template Diagram
IDT82V2082
Figure-5 E1 Pulse Template Test Circuit
1 .2 0
1 .0 0
0 .6 0
0 .4 0
- 0 .2 0
0 .8 0
0 .2 0
0 .0 0
LOAD
LOAD
-0 .6
= 75 Ω (nom), V
=120 Ω (nom), V
- 0 .4
TTIPn
TRINGn
- 0 .2
out
out
T im e in U n it In te rv a ls
(Peak)=2.37V (nom)
(Peak)=3.00V (nom)
0
0 .2
Figure-6
R
LOAD
0 .4
DUAL CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
according to
V
0 .6
OUT
20
‘0111’.
3.3.3.2 LBO (Line Build Out)
could be attenuated before transmission for long haul applications. The
FCC Part 68 Regulations specifies four grades of attenuation with a step
of 7.5 dB. Three LBOs are used to implement the pulse attenuation. The
PULS[3:0] bits (TCF1, 05H...) are used to select the attenuation grade. Both
Table-14
Note: R
For J1 applications, the PULS[3:0] (TCF1, 05H...) should be set to
To prevent the cross-talk at the far end, the output of TTIPn/TRINGn
IDT82V2082
-0.2
-0.4
-0.6
1.2
0.8
0.6
0.4
0.2
1
0
Table-14
LOAD
0
Figure-7 T1 Pulse Template Test Circuit
and
Figure-6 DSX-1 Waveform Template
= 100 Ω ± 5%
Table-15
lists these values.
TTIPn
TRINGn
250
list these values.
500
Time (ns)
750
Cable
1000
May 4, 2009
R
LOAD
V
OUT
1250