tdat04622 ETC-unknow, tdat04622 Datasheet - Page 108

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 SONET/SDH
155/622/2488 Mbits/s Data Interface
Functional Description
Data Engine (DE) Block
Transmit Data Engine (continued)
The multiplexing rules of SONET are illustrated in Figure 19, and are shown for the case of two-stage byte inter-
leaving of 12 STS-1 signals into an STS-12 signal. The values provisioned in the time-slot registers should obey
the SONET multiplexing rules. In Figure 18, time slots 1 through 12 of channel A represent the interleaved bytes of
the multiplexed STS-12 signal being received/transmitted in logical channel 0 (0x4). Channels B, C, and D are con-
figured similarly; however, data is being received/transmitted from logical channels 1, 2, and 3, respectively.
80
STS#
10
11
12
1
2
3
4
5
6
7
8
9
3:1
3:1
3:1
3:1
12
3
6
9
Figure 19. SONET Multiplexing: 2-Stage Byte Interleaving Example
11
2
5
8
(continued)
10
(continued)
1
4
7
12TH BYTE
12
9
6
3
11
8
5
2
Agere Systems Inc.
10
Data Sheet
7
May 2001
1ST BYTE
4
5-8387(F)
1