PEF24901HV22XT Lantiq, PEF24901HV22XT Datasheet - Page 49
![](/photos/31/31/313132/64pin_mqfp_sml.jpg)
PEF24901HV22XT
Manufacturer Part Number
PEF24901HV22XT
Description
Manufacturer
Lantiq
Datasheet
1.PEF24901HV22XT.pdf
(111 pages)
Specifications of PEF24901HV22XT
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
- Current page: 49 of 111
- Download datasheet (2Mb)
3.5.6
Scrambler
The binary transmit data from the IOM
23 bits, before it is sent to the 4B3T coder. The scrambling algorithm ensures that no
sequences of permanent binary 0 s or 1 s are transmitted.
– The scrambler polynomial in LT mode and NT mode with the analog loop closed is:
– The scrambler polynomial in NT mode with open analog loop is:
Descrambler
The received data (after decoding from ternary to binary) is multiplied with a polynomial
of 23 bits in order to recover the original data before it is forwarded to the IOM
interface. The descrambler itself is synchronized after 23 symbols.
– The descrambler polynomial in LT mode with open analog loop is:
– The descrambler polynomial in NT mode or in LT with the analog loop closed is:
3.5.7
For control and monitoring purposes of the activation/deactivation progress the following
signal elements are defined by TS 102 080 and FTZ 1 TR 220.
Encoding Scheme
The table below describes the characteristics of the defined 4B3T signal elements.
Data Sheet
Scrambler / Descrambler
4B3T Signal Elements
z
z
z
z
–
–
–
–
23
23
23
23
+
+
+
+
®
z
z
-2 interface is scrambled with a polynomial of
z
z
–
–
5 –
5 –
18
18
50
+
+
+
+
1
1
1
1
Functional Description
PEF 24901
2002-09-30
DFE-T
®
-2
Related parts for PEF24901HV22XT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PEB22811H-V13X](/images/manufacturer_photos/0/3/379/lantiq_tmb.jpg)
Part Number:
Description:
Manufacturer:
Lantiq
Datasheet:
![ADM6996L-AA-T-1](/images/manufacturer_photos/0/3/379/lantiq_tmb.jpg)
Part Number:
Description:
Manufacturer:
Lantiq
Datasheet:
![PEF22810T-V21TR](/images/manufacturer_photos/0/3/379/lantiq_tmb.jpg)
Part Number:
Description:
Manufacturer:
Lantiq
Datasheet: