MT92220BG Zarlink Semiconductor, MT92220BG Datasheet - Page 101

• Manufacturer Part Number: MT92220BG
• Description: Description = 1023 Channel Voice Over IP/AAL2 Processor ;; Package Type = Epbga ;; No. Of Pins = 608
• Manufacturer: Zarlink Semiconductor

Data Sheet
The format of the RX RTP Connection structure is the following:
Payload Type /
Marker Bit Table
Base
UCD
RTP
Field
+1A
+10
+12
+14
+16
+18
+A
+C
+E
+0
+2
+4
+6
+8
b 15
IJ
IJ
This field is a pointer to a Payload Type / Marker Bit Table Structure and is used to
determine the index used in the 16-way split to a RX RTP Channel Structure. This
pointer is defined in increments of 128 bytes.
UDP Checksum Error Discard. When this bit is ‘1’ and a packet is received with an
invalid UDP checksum, the packet will be discarded prior to updating the content of
this structure.
This bit must be set when packets received through this RX RTP Connection Structure
are in the RTP format. This bit must be cleared when packets are non-RTP (i.e., any
other protocol over UDP). The indexing to the Payload Type / Marker Bit table will be
done with the Payload Type / Marker Bit for RTP, and will be done with the UDP
Payload Length for all other protocols over UDP.
Last Local Time Stamp [7:0]
UCD
b14
R
R
b13
Figure 54 - RX RTP Connection Structure
RX RTP Channel 15 Structure Address [20:5]
Type
RX RTP Channel 0 Structure Address [20:5]
Type
Network Jitter Integer [11:0]
b12
RTP
Table 39 - Fields and Description
Payload Type / Marker Bit Table Base [20:7]
Last Received Sequence Number [15:0]
UCR
b11
Last Received Time Stamp [31:16]
Last Received Time Stamp [15:0]
Last Local Time Stamp [23:8]
Received Packet Count [15:0]
Received Octet Count [31:16]
Zarlink Semiconductor Inc.
b10
Received Octet Count [15:0]
LR
b9
b8
b7
Description
Network Jitter Integer [19:12]
b6
b5
b4
Net Jitter Fraction [3:0]
b3
PCM Info
PCM Info
b2
JI
b1
b0
I
MT92220
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