cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 84

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

5.2.9
Examples of the overhead TSBUS operates at a data rate of 12.96 Mbps. It carries PDH, or SDH overhead
communication channels and it carries the data monitoring and data configuration for the device that
communicates through TSBUS interface with CX28500.
The data on the overhead TSBUS is framed and consists of 84 time slots.
5.2.9.1
The sources and destinations of overhead data transferred to and from the Overhead TSBUS are as follows:
•
•
•
5.2.9.2
The number of time slots configured for data payload or overhead are illustrated in
Figure 5-3.
5.2.9.2.1
For a detailed description of the TSBUS interface, see related documents:
1. Mindspeed’s CX29503 Data Sheet (Section 2.10).
28500-DSH-002-C
SONET
•
•
•
•
•
DX3 – DS3 TDL Overhead—1 time slot
Command Status Processor (CSP)—100 time slots
SONET/SDH Section DCCR—3 time slots
Line CDDM Overhead—9 time slots
SPE Path F2 User Data—1 time slot
SPE Path F3 User Data—1 time slot
SPE N1 Tandem Connection—1 time slot
TSBUS Number of Time Slots into a Payload or Overhead Frame
Overhead TSBUS
Overhead Data Channels
TSBUS Time Slots
TSBUS References
1
1
Time Slot No. 1 is First Byte of
Payload and Overhead TSBUS Frame
2
2
3
3
4
4
Mindspeed Proprietary and Confidential
5
5
Mindspeed Technologies
6
6
7
8
1 Byte per Time Slot
. . .
Payload and Overhead TSBUS Frame
Time Slot No. 84 is Last Byte of
79 80 81 82 83 84
®
Payload and Overhead Time Slot
Bus Frame = 84 Time Slots
Figure
5-3.
Serial Interface
500052_025
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