TDM
Bus

·    
Function

·    
Implementation

The TDM bus
provides a data channel for the narrowband services. It transmits the synchronization clock and narrowband timeslot
information of the system.

Function

The SWU is the switching core of the narrowband service
plane. It implements timeslot information exchange between boards and subracks
on the narrowband service plane.
In addition, the SWU receives the synchronization clock information generated
by the system clock module and transfers the information to the narrowband
interface modules through the TDM bus. Figure 1 shows the connections of the TDM buses.

Figure 1 (attached) Connections of the TDM buses




 
 
 
 
 
 
 
 
 
 
 
 

The
clock synchronization module is configured on the SWI in slot 0. It uses the external clock reference source to
generate the synchronization clock source required for the system and sends the
clock source to the SWU in slot 0. The
SWU transfers the synchronization clock information to various narrowband
interface modules through the TDM bus. On receiving the synchronization
clock information, the narrowband interface modules generate clocks required
for various services, thus achieving synchronization throughout the system.

Very helpful. Thanks for sharing.

good description