MT92220BG Zarlink Semiconductor, MT92220BG Datasheet - Page 102

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

102
UCR
LR
JI
I
Last Received
Sequence Number
Last Received Time
Stamp
Last Local Time
Stamp
Network Jitter
Integer/Fraction
Received Packet
Count
Received Octet
Count
IJ
R
Type
Field
UDP Checksum Error Report. When this bit is ‘1’, any packet received with an
erroneous UDP checksum will generate an event in the RX Disassembly Event Report
Queue.
Loss Report. When this bit is set and two consecutive packets do not have sequential
RTP sequence numbers, an event in the RX Disassembly Event Report Queue will be
generated. This bit should be cleared if packets processed by this structure are not in
the RTP format.
Jitter init. This bit must be cleared by software when this structure is first created. It will
be set by hardware when the first packet is received that has the IJ bit set in the RX
RTP Channel Structure branching entry.
Initialized bit. This bit must be cleared by software when this structure is first created.
It will be set by hardware when the first packet is received.
Sequence number contained in the last received RTP packet. This field is not defined
if packets processed by this structure are not in the RTP format.
Time Stamp contained in the last received RTP packet. This field is not defined if
packets processed by this structure are not in the RTP format.
This field contains the local TDM Bus Time Stamp at the arrival time of the last packet
processed by this structure. Only the bottom 24 bits of the local TDM Bus Time Stamp
are kept. This field is used to calculate the RTP interpacket jitter.
This field contains the interpacket jitter as monitored for all packets received via this
structure, as defined by the RTP specification. The time unit of this field is frames.
This field is a counter of the total number of packets received on this connection so
far.
This field is a counter of the total number of bytes received on this connection so far.
For each packet received, this field will increment by UDP Length - 8.
Include Jitter. When this bit is set, the RTP Time Stamp and Sequence Number of any
packet that passes through this RX RTP Channel Entry Split will be used to update the
following fields: Last Received Sequence Number, Last Received Time Stamp,
Network Jitter Integer and Fraction.
Report UUI/LI Combination to CPU through the RX Disassembly Event Report Queue
(when set).
Type of RX RTP Channel Structure.
“000” = PCM + ADPCM;
“001” = HDLC;
“010” = RX CPU;
“111” = delete;
others = reserved.
Table 39 - Fields and Description (continued)
Zarlink Semiconductor Inc.
Description