XRT7295AT Datasheet, PDF (2/18 Pages) Exar Corporation – DS3/Sonet STS-1 Integrated Line Receiver

XRT7295AT
BLOCK DIAGRAM
2
Attenuator
R_IN
REQB
18
Gain &
Equalizer
Slicers
19
LOSTHR
AGC
Analog
LOS
Peak
Detector
Equalizer
Tuning Ckt.
LPF1 LPF2 V_DDA GNDA V_DDD GNDD V_DDC GNDC
4
5
20
1
11
9
12 10
Phase
Detector
Loop
Filter
VCO
14 RCLK
Retimer
Frequency Phase
Aquisition Circuit
Digital
LOS
Detector
Analog
LOS
16 RPDATA
15 _RNDATA
7 _RLOS
17
3
6
ICT TMC1 TMC2
13
8
EXCLK RLOL
Figure 1. Block Diagram
Rev.1.20
2