PEB24911HV13TR Lantiq, PEB24911HV13TR Datasheet - Page 63
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PEB24911HV13TR
Manufacturer Part Number
PEB24911HV13TR
Description
Manufacturer
Lantiq
Datasheet
1.PEB24911HV13TR.pdf
(155 pages)
Specifications of PEB24911HV13TR
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3.13
The 2B1Q line code is a 4-level pulse amplitude modulation (PAM) code without
redundancy. 2B1Q stands for 2 Binary, 1 Quaternary. In transmit direction two-bit binary
pairs are converted into quaternary symbols that are called quats. In each pair of bits the
first bit is called the sign bit and the second is called the magnitude bit.
the relationship of the bits to quats.
Table 9
The four values listed under ’Quaternary symbol’ in the table above should be
understood as symbol names, not numerical values.
At the receiver, each quaternary symbol is converted to a pair of bits by reversing the
table, descrambled and finally formed into the original bit stream.
Data Sheet
First bit
Encoding/ Decoding (2B1Q)
(sign)
1
1
0
0
2B1Q Coding Table
(magnitude)
Second bit
53
0
1
1
0
Quaternary Symbol
Functional Description
(quat)
+3
+1
-1
-3
Table 9
PEF 24911
2001-07-16
shows
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