參數(shù)資料
型號(hào): IDT82V2081PP
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 14/68頁
文件大小: 0K
描述: IC LIU T1/J1/E1 1CH 44-TQFP
標(biāo)準(zhǔn)包裝: 80
類型: 線路接口裝置(LIU)
規(guī)程: T1/E1/J1
電源電壓: 3.13 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 44-LQFP
供應(yīng)商設(shè)備封裝: 44-TQFP(10x10)
包裝: 托盤
其它名稱: 800-1997-5
82V2081PP
IDT82V2081PP-ND
21
INDUSTRIAL
TEMPERATURE RANGES
SINGLE CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
3.4
RECEIVE PATH
The receive path consists of Receive Internal Termination, Monitor
Gain,Amplitude/WaveShapeDetector,DigitalTuningController,Adaptive
Equalizer, Data Slicer, CDR (Clock & Data Recovery), Optional Jitter
Attenuator, Decoder and LOS/AIS Detector. Refer to Figure-7.
3.4.1
RECEIVE INTERNAL TERMINATION
The impedance matching can be realized by the internal impedance
matching circuit or the external impedance matching circuit. If R_TERM[2]
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
, 100
, 110 or 120 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. Figure-8 shows the appropriate external compo-
nents to connect with the cable. Table-15 is the list of the recommended
impedance matching for receiver.
Figure-7 Receive Path Function Block Diagram
Figure-8 Transmit/Receive Line Circuit
Table-15 Impedance Matching for Receiver
Cable Configuration
Internal Termination
External Termination
R_TERM[2:0]
RR
R_TERM[2:0]
RR
E1/75
000
120
1XX
75
E1/120
001
120
T1
010
100
J1
011
110
Monitor Gain
Adaptive
Equalizer
LOS/AIS
Detector
Data Slicer
Decoder
LOS
RCLK
RDP
RDN
RTIP
Clock
and Data
Recovery
Receive
Internal
termination
RRING
Jitter
Attenuator
A
B
RX Line
RR
TX Line
RT
RTIP
RRING
TRING
TTIP
IDT
82
V2081
VDDT
D4
D3
D2
D1
1:1
2:1
D6
D5
D8
D7
Cp
VDDA
0.1
F
GNDT
VDDT
68
F1
3.3 V
0.1
F
GNDA
VDDA
68
F
3.3 V
1
Note: 1. Common decoupling capacitor
2. Cp 0-560 (pF)
3. D1 - D8, Motorola - MBR0540T1;
International Rectifier - 11DQ04 or 10BQ060
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IDT82V2082 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:DUAL CHANNEL T1/E1/J1 LONG HAUL/ SHORT HAUL LINE INTERFACE UNIT
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