MT92220 Zarlink Semiconductor, MT92220 Datasheet - Page 133
MT92220
Manufacturer Part Number
MT92220
Description
1023 Channel Voice Over IP/AAL2 Processor
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT92220.pdf
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Data Sheet
The format of the RX AAL2 CPU Channel Structure is the following:
Last Packet Local Time
Stamp:
I
Received Packet Count:
Received Octet Count
Field
+10
+12
+14
+A
+C
+E
+0
+2
+4
+6
+8
b 15
A
Last Packet Local Time Stamp [7:0]
b14
B
Time stamp in frames of the last received packet used to determine the time delta
between the reception of RX CPU packets. Used to discharge the Current Bucket
Fill.
Initialized bit. Written to zero by software channel initialization. Written to ‘1’ by
hardware as soon at the first packet is received on this channel.
Total number of packets received on this channel so far. Every packet that gets to
this structure will be included.
Total number of bytes received on this channel so far. Every packet that gets to this
structure will be included. This field increments by the UDP Length - 8 each time
packet is received.
Table 54 - Fields and Description (continued)
b13
1
Figure 71 - RX AAL2 CPU Channel Structure
b12
1
b11
1
Last Packet Local Time Stamp [23:8]
Received Packet Count [15:0]
Received Octet Count [31:16]
b10
Received Octet Count [15:0]
Zarlink Semiconductor Inc.
Maximum Bucket Fill [15:0]
Current Bucket Fill [15:0]
b9
1
Discharge Rate [5:0]
HFE
0x0000
b8
b7
I
RX CPU Buffer Index [8:0]
Description
b6
b5
Current Bucket Fill [21:16]
b4
0x00
b3
0
b2
0
b1
0
b0
0
MT92220
133
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