XRT75R03IVTR Exar Corporation, XRT75R03IVTR Datasheet - Page 48

• Manufacturer Part Number: XRT75R03IVTR
• Description: IC LIU E3/DS3/STS-1 3CH 128LQFP
• Manufacturer: Exar Corporation

Specifications of XRT75R03IVTR

• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

XRT75R03
REV. 1.0.8
The Clock and Data Recovery Circuit extracts the embedded clock, RxClk_n from the sliced digital data stream
and provides the retimed data to the B3ZS (HDB3) decoder.
The Clock Recovery PLL can be in one of the following two modes:
Training Mode:
In the absence of input signals at RTIP_n and RRing_n pins, or when the frequency difference between the
recovered line clock signal and the reference clock applied on the ExClk_n input pins exceed 0.5%, a Loss of
Lock condition is declared by toggling RLOL_n output pin “High” (in Hardware Mode) or setting the RLOL_n bit
to “1” in the control registers (in Host Mode). Also, the clock output on the RxClk_n pins are the same as the
reference clock channel.
F
6.2
IGURE
Signal Source
2
17.184mHz
Sine Wave
Generator
23
19. I
-1 PRBS
Clock and Data Recovery:
NTERFERENCE
STS-1
M
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
DS3
E3
ODE
N
S
Attenuator 1
M
ARGIN
T
ABLE
C
ABLE
T
EST
9: I
L
S
ENGTH
NTERFERENCE
ET UP FOR
225 feet
450 feet
225 feet
450 feet
12 dB
0 feet
0 feet
Attenuator 2
0 dB
(A
TTENUATION
E3.
45
M
ARGIN
)
∑
Cable Simulator
T
EST
R
I
NTERFERENCE
ESULTS
Equalizer “IN”
-18.5 dB
-17.5 dB
-14 dB
-19 gB
-17 dB
-15 dB
-14 dB
-14 dB
T
OLERANCE
(XRT75R03)
DUT
xr
xr
xr
xr
Equipment
Test