PEF80902HV11XT Infineon Technologies, PEF80902HV11XT Datasheet - Page 29

• Manufacturer Part Number: PEF80902HV11XT
• Manufacturer: Infineon Technologies

Specifications of PEF80902HV11XT

• Lead Free Status / Rohs Status: Compliant

Table 9
0 + 0,
0 + –
+ + 0,
2.3.4.1
The running digital sum monitor (RDSM) computes the running digital sum from the
received ternary symbols by adding the polarity of the received user data (+ 1, 0, –1). At
the end of each block, the running digital sum is supposed to reflect the number of the
next column in
A code violation has occurred if the running digital sum is less than one or more than four
at the end of a ternary block, or if the ternary block 0 0 0 (three user symbols with zero
polarity) is found in the received data.
If at the end of a ternary block no error was found, the running digital sum retains its
current value. If the counter value is greater than 4, it is set to 4 at the beginning of the
next ternary block, if its value is 0 or less, it is set to one. So after a code violation has
been detected, the RDSM synchronizes itself within a period depending on the received
data pattern. Note there are some transmission errors which do not cause a code
violation.
2.3.5
Scrambler
The binary transmit data from the IOM
23 bits, before it is sent to the 4B3T coder. The scrambler polynomial 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 is self synchronized after 23 symbols. The descrambler
polynomial is::
The scrambling / descrambling process is controlled fully by the T-SMINTO. Hence, no
influence can be taken by the user.
Data Sheet
Monitoring of Code Violations
Scrambler / Descrambler
4B3T Decoding Table (cont’d)
Table
– 0 –
0 0 –
8.
z
z
–
–
23
23
+
+
®
z
-2 interface is scrambled with a polynomial of
z
–
5 –
18
21
+
+
1
1
1
1
1
1
1
1
Functional Description
0
1
1
PEF 80902
2001-11-12
1
0
1
®
-2