MT92210 Zarlink Semiconductor, MT92210 Datasheet - Page 124

Manufacturer Part Number

MT92210

Description

1023 Channel Voice Over ip (VoIP) Processor

Manufacturer

Zarlink Semiconductor

Datasheet

1.MT92210.pdf (190 pages)

124

Each RX HDLC stream structure in the RX TDM Control Memory corresponds to an entry in the RX HDLC

Stream/Buffer Control Table. This entry contains almost the same information as the RX HDLC stream structure,

but is updated first by the packet disassembly module. When the RX HDLC stream structure thinks its circular

buffer is empty, it checks the write pointer in the RX HDLC Stream/Buffer Control entry to see if it has changed

since last time. Similarly, when the RX TDM process completes a packet, it updates the value of the read pointer in

the RX HDLC Stream/Buffer Control entry.

16K Byte Buffer *

32K Byte Buffer *

64K Byte Buffer *

256 Byte Buffer

512 Byte Buffer

1K Byte Buffer

2K Byte Buffer

4K Byte Buffer

8K Byte Buffer *

* Note: Valid for HDLC Buffer only

Figure 68 - RX Circular Buffer Base/Size Indication

b13

RX Circ Buf Base [20:16]

RX Circ Buffer Base [20:15]

RX Circ. Buffer Base [20:14]

RX Circular Buffer Base [20:13]

b12

RX Circular Buffer Base [20:12]

RX Circular Buffer Base [20:11]

b11

Zarlink Semiconductor Inc.

RX Circular Buffer Base [20:10]

RX Circular Buffer Base [20:9]

b10

RX Circular Buffer Base [20:8]