PEB20571 INFINEON [Infineon Technologies AG], PEB20571 Datasheet - Page 89

• Manufacturer Part Number: PEB20571
• Description: ICs for Communications
• Manufacturer: INFINEON [Infineon Technologies AG]

Table 4-2
Frame number
1
2
6
7
11
12
16
17
...
Note: 1.Only frame positions (within the 20-frame multiframe) that carry S- or Q-channel
On the IOM-2000 interface, the S/T multiframe information is included in the DX/DR data
stream (transparently to the VIP). The values of the multiframe are controlled by the DSP
software in the DELIC.
When multiframe synchronization is not achieved or lost, the VIP mirrors the received F
bits. Once the multiframe synchronization is established, the DSP sends the multiframe
synchronization command to the VIP (MSYNC bit). Upon reception of the MSYNC, the
VIP stops mirroring the F
4.2.4.3
In the transmit direction the F
opposite of the F
to ‘1’, which indicates the Q-bit position to the TE.
The receive direction, the F
4.2.4.4
In transmit (downstream) direction the L-bit is generated in compliance with ITU-T I.430:
• A balance bit is ‘0’ if the number of 0’s following the previous balance bit is odd.
• A balance bit is ‘1’ if the number of 0’s following the previous balance bit is even.
Preliminary Data Sheet
information are shown here
2.The Q- and S-bits, which are not used, are set to ‘1’.
F
DC-Balancing Bit (L-Bit)
a
/N Bit
S/T Mode Multiframe Bit Positions
a
. The F
CO to LT-T,
F
1
0
1
0
1
0
1
0
...
LT-S to TE or
a
bit position
a
a
bit is equal to binary ‘0’, except every 5-th frame when it is set
-bit.
a
bit positions represent the Q-channel.
a
/N bit pair is coded in such a way that N is the binary
LT-S to TE or
CO to LT-T,
M-bit
1
0
0
0
0
0
0
0
...
4-5
LT-S to TE or
CO to LT-T,
S-bit
S11
S21
S12
S22
S13
S23
S14
S24
...
Functional Description
TE to LT-S or
LT-T to CO
F
Q1
0
Q2
0
Q3
0
Q4
0
...
a
bit position
PEB 20571
DELIC
2003-08
a