MT92210 Datasheet, PDF (68/175 Pages) Zarlink Semiconductor Inc – 1023 Channel Voice Over IP Processor

Data Sheet
MT92210
If an xxPCM channel is carried by this connection, then the format of the TX RTP connection structure will be the
following:
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
+0
I
Next Packet Assembled Starting With This Byte [13:0]
+2 Buf Size ^V
Extra Delay Frames [7:0]
+4
TX Silence Suppression Structure Base [20:5]
+6
TX RTP Header Structure Pointer [20:5]
+8 Samples per packet at 64 kbps
SI
+A
Number of Channels [7:0]
+C ^{Samples per packet at 40 kbps}
+E ^{Samples per packet at 24 kbps}
Samples per packet at 32 kbps
Samples per packet at 16 kbps
+10
Time Stamp Offset [31:16]
+12
Time Stamp Offset [15:0]
+14
Transmitted Packet Count [15:0]
+16
Sequence Number [15:0]
+18
Transmitted Octet Count [31:16]
+1A
Transmitted Octet Count [15:0]
+1C
First Word of Last RTP Packet Sent
+1E
Second Word of Last RTP Packet Sent
+20
Third Word of Last RTP Packet Sent
+22
Fourth Word of Last RTP Packet Sent
+24
Fifth Word of Last RTP Packet Sent
+26
Sixth Word of Last RTP Packet Sent
+28
Bearer 1 - Circular Buffer Base Address [20:9]
+2A
Bearer 2 - Circular Buffer Base Address [20:9]
Bearer N-2 - Circular Buffer Base Address [20:9]
Bearer N-1 - Circular Buffer Base Address [20:9]
Figure 39 - xxPCM Channel Addition to TX RTP Connection Structure
Zarlink Semiconductor Inc.
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