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CS61318 Datasheet(PDF) 5 Page - Cirrus Logic

Part No. CS61318
Description  E1 LINE INTERFACE UNIT
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS61318
DS441PP2
5
ANALOG SPECIFICATIONS (TA = -40
°C to 85°C; TV+, RV+ = 5.0 V ±5%; GND = 0 V)
Notes: 8. Using a 0.47 µF capacitor in series with the primary of a transformer recommended in the Applications
Section.
9. Pulse amplitude measured at the secondary of the transformer across a 75
Ω load.
10. Pulse amplitude measured at the secondary of the transformer across a 120
Ω load.
11. Assuming that jitter free clock is input to TCLK.
12. Not production tested. Parameters guaranteed by design and characterization.
13. Measured broadband through a 0.5
Ω resistor across the secondary of the transmitter transformer
during the transmission of an all ones data pattern.
14. Data decision threshold established after the receiver equalizer filters pulse overshoot and undershoot.
15. Jitter tolerance for 0 dB input signal level. Jitter tolerance increases at lower frequencies.
Parameter
Min
Typ
Max
Units
Transmitter
AMI Output Pulse Amplitudes
(Note 8)
E1, 75
Ω (Note 9)
E1, 120
Ω (Note 10)
2.14
2.7
2.37
3.0
2.6
3.3
V
V
Transmitter Output Impedance
Transformer turns ratio = 1:2
Low Z, Long Haul
1.5
Jitter Added by the Transmitter
(Notes 11,12)
10 Hz - 8 kHz
8k Hz - 40 kHz
10 Hz - 40 kHz
Broad Band
-
-
-
-
0.015
0.015
0.015
0.020
-
-
-
-
UI
UI
UI
UI
Positive to Negative Pulse Imbalance
(Notes 8, 12)
-
0.2
0.5
dB
Transmitter Short Circuit Current
(Notes 8, 13)
-
-
50
mA RMS
Receiver
RTIP/RRING Input Impedance
-
20k
-
Sensitivity Below DSX (0 dB = 3.0 V)
-36
48
-
-
-
-
dB
mV
Sensitivity Below G.703 (0 dB = 2.4 V) E1 - Short Haul
-15
430
-
-
-
-
dB
mV
Loss of Signal Threshold
-
-42
-
dB
Data Decision Threshold
(Note 14)
45
50
55
% of peak
Allowable Consecutive Zeros before LOS
160
175
190
bits
Receiver Input Jitter Tolerance - Short Haul
(Note 15)
10 kHz - 100 kHz
(Note 12, 15) 2 kHz
(Note 12, 15) 10 Hz and below
0.35
6.0
300
-
-
-
-
-
-
UI
UI
UI
Receiver Input Jitter Tolerance - Long Haul
10 kHz - 100 kHz
(Note 12, 15) 1 Hz
0.35
138
-
-
-
-
UI
UI




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