82V2081PP8 IDT, Integrated Device Technology Inc, 82V2081PP8 Datasheet - Page 21

• Manufacturer Part Number: 82V2081PP8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2081PP8

• 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

SINGLE CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
3.4
Gain, Amplitude/Wave Shape Detector, Digital Tuning Controller, Adaptive
Equalizer, Data Slicer, CDR (Clock & Data Recovery), Optional Jitter
Attenuator, Decoder and LOS/AIS Detector. Refer to Figure-7.
3.4.1
matching circuit or the external impedance matching circuit. If R_TERM[2]
Table-15 Impedance Matching for Receiver
RTIP
RRING
The receive path consists of Receive Internal Termination, Monitor
The impedance matching can be realized by the internal impedance
RECEIVE PATH
RECEIVE INTERNAL TERMINATION
Cable Configuration
termination
Receive
Internal
E1/120 Ω
E1/75 Ω
T1
J1
R
Note: 1. Common decoupling capacitor
Monitor Gain
X
T
Line
X
Line
2. Cp 0-560 (pF)
3. D1 - D8, Motorola - MBR0540T1;
A
B
•
•
Figure-7 Receive Path Function Block Diagram
2:1
1:1
•
•
Figure-8 Transmit/Receive Line Circuit
Cp
Equalizer
Adaptive
R_TERM[2:0]
R
R
Internal Termination
000
001
010
011
•
•
R
R
T
T
VDDA
D6
D5
•
·
VDDT
VDDA
VDDT
D2
D1
D8
D7
D4
D3
International Rectifier - 11DQ04 or 10BQ060
Data Slicer
•
•
•
·
·
·
21
RTIP
RRING
TTIP
TRING
is set to ‘0’, the internal impedance matching circuit will be selected. In this
case, the R_TERM[1:0] bits (TERM, 03H) can be set to choose 75 Ω, 100
Ω, 110 Ω or 120 Ω internal impedance of RTIP/RRING. If R_TERM[2] is
set to ‘1’, the internal impedance matching circuit will be disabled. In this
case, the external impedance matching circuit will be used to realize the
impedance matching.
nents to connect with the cable.
impedance matching for receiver.
120 Ω
R
R
Recovery
and Data
Clock
GNDA
VDDA
GNDT
VDDT
R_TERM[2:0]
Figure-8
Attenuator
Jitter
1XX
0.1µF
0.1µF
shows the appropriate external compo-
Table-15
External Termination
•
•
68µF
68µF
is the list of the recommended
TEMPERATURE RANGES
LOS/AIS
Detector
Decoder
3.3 V
3.3 V
1
1
120 Ω
100 Ω
110 Ω
75 Ω
R
INDUSTRIAL
R
LOS
RCLK
RDP
RDN