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XR-T7295 Datasheet, PDF (2/20 Pages) Exar Corporation – DS3/Sonet STS-1 Integrated Line Receiver | |||
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XR-T7295
BLOCK DIAGRAM
ÃÃÃÃÃÃÃÃÃÃÃÃ 2
Attenuator
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ RIN
REQB
18
Gain &
Equalizer
ÃÃÃÃÃÃÃÃÃ Slicers
LPF1 LPF2 VDDA GNDA VDDD GNDD VDDC GNDC
ÃÃÃÃÃÃÃÃÃÃÃ 4
5
20
1 11
9 12 10
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Phase
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Ã Detector
Loop
Filter
VCO
14 RCLK
ÃÃÃPeak
ÃÃÃÃÃÃ Detector
ÃÃÃÃÃÃÃ 19
LOSTHR
AGC
ÃÃÃÃÃÃÃÃÃÃÃÃ Analog
ÃÃÃÃÃÃÃÃÃÃ LOS
Equalizer
Tuning Ckt.
ÃÃÃÃÃÃÃÃÃRetimer
ÃÃÃÃÃÃ Frequency Phase
ÃÃÃÃÃÃÃÃÃÃÃÃ Aquisition Circuit
Analog
LOS
Digital
ÃÃÃ LOS
ÃÃÃ Detector
16 RPDATA
ÃÃ15 RNDATA
Ã7 RLOS
ÃÃÃÃ ÃÃÃ 17
3
6
ÃÃÃÃ ÃÃÃ ICT TMC1 TMC2
13
8
EXCLK RLOL
Figure 1. Block Diagram
Rev. 1.05
2
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