Datasheet

____________________________________________________ DS34S101, DS34S102, DS34S104, DS34S108

Rev: 032609 74 of 198

10.6.11.10

TDM to TDM (Cross-Connect) Flow

Each payload-type machine receives the data of bundle-specific TDM timeslots and maps the data into Ethernet

packets. To store a packet, the payload-type machine needs an SDRAM buffer which it gets by extracting a buffer

pointer from the free buffer pool. It then fills the buffer as it processes the TDM timeslots. When a packet is

completed in a buffer, the machine places the buffer pointer in the cross-connect queue. The RX arbiter polls the

cross-connect queue, extracts the pointer, transfers the buffer data to the appropriate payload-type machine, and

then returns the pointer to the free buffer pool. The payload-type machine then extracts the TDM data and inserts it

into the jitter buffer in the SDRAM. From there, the data is transmitted serially out the TDM port.

Figure 10-53. TDM-to-TDM Flow

AAL1

HDLC

SDRAM

DATA

FREE

BUFFER

POOL

TDMoP BLOCK

RAW

ARBITER

CROSS

CONNECT

QUEUE