DP83815DVNG/HAPB National Semiconductor, DP83815DVNG/HAPB Datasheet - Page 26
DP83815DVNG/HAPB
Manufacturer Part Number
DP83815DVNG/HAPB
Description
Manufacturer
National Semiconductor
Datasheet
1.DP83815DVNGHAPB.pdf
(108 pages)
Specifications of DP83815DVNG/HAPB
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
3.6V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
144
Lead Free Status / RoHS Status
Not Compliant
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Figure 3-10 EIA/TIA Attenuation vs. Frequency for 0, 50,
3.0 Functional Description
Figure 3-11 MLT-3 Signal Measured at AII after 0 meters
3.10.4 Line Quality Monitor
It is possible to determine the amount of Equalization being
used by accessing certain test registers with the DSP
engine. This provides a crude indication of connected
cable length. This function allows for a quick and simple
verification of the line quality in that any significant
deviation from an expected register value (based on a
known cable length) would indicate that the signal quality
has deviated from the expected nominal case.
100, 130 & 150 meters of CAT V cable
of CAT V cable
2ns/div
(Continued)
26
3.10.5 MLT-3 to NRZI Decoder
The DP83815 decodes the MLT-3 information from the
Digital Adaptive Equalizer block to binary NRZI data.
Figure 3-13 MLT-3 Signal Measured at AII after 100
Figure 3-12 MLT-3 Signal Measured at AII after 50
meters of CAT V cable
meters of CAT V cable
2ns/div
2ns/div
Rev O
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