MT92220 Datasheet, PDF (84/210 Pages) Zarlink Semiconductor Inc – 1023 Channel Voice Over IP/AAL2 Processor

Data Sheet
MT92220
If an xxPCM channel is carried over this connection, then the format of the TX AAL2 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
Silence Suppression Structure Base [20:5]
+6
AAL2 TX VC Base Address [20:5]
+8 Samples per packet at 64 kbps
AAL2 CID [7:0]
+A
Num Seq Bits
Number of Bearers [7:0]
+C _{Samples per packet at 40 kbps}
Samples per packet at 32 kbps
+E Samples per packet at 24 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
+18
+1A
+1C
T[31]
+1E _{Seq # Interval [7:4]}
+20 _{Seq # Interval [3:0]}
Transmitted Octet Count [31:16]
Transmitted Octet Count [15:0]
Time Stamp Remainder [11:0]
Time Stamp Remainder Wrap Inc [11:0]
CPS Timer [11:0]
+22 _{FL 64 kbps UUI [4:0]}
40 kbps UUI [4:0]
32 kbps UUI [4:0]
+24
24 kbps UUI [4:0]
16 kbps UUI [4:0]
SID UUI [4:0]
+26
+28
Bearer 1 - Circular Buffer Base Address [20:9]
+2A
Bearer 2 - Circular Buffer Base Address [20:9]
Bearer 254 - Circular Buffer Base Address [20:9]
Bearer 255 - Circular Buffer Base Address [20:9]
Figure 48 - xxPCM Channel Addition to TX AAL2 Connection Structure
Zarlink Semiconductor Inc.
84