MT92220BG Zarlink Semiconductor, MT92220BG Datasheet - Page 16

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

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Up to 1023 PCM/ADPCM channels
Support for up to 4096 HDLC channels distributed over 512 streams and 2046 time slots
Up to 255 PCM/ADPCM channels per connection
Up to 248 voice CIDs per AAL2 VC
One single AAL2 CID can interlace up to 64 PCM/ADPCM channels
HDLC packets contain application data (UDP payload) converted to IP/UDP datagram
Packets sizes up to 1500 bytes for IP/UDP and 64 bytes for AAL2
Support of up to 1500 TDM samples of data per packet
Jitter Absorption Buffer size up to 4096 bytes allowing absorption of up to ±256 ms of PDV
Injection of CPU-generated RTP or AAL2 packets
Reception of CPU-destined RTP or AAL2 packets in buffers of up to 64K bytes
Packet Delay Variation monitoring to diagnose and reduce delay
Packet loss & misinsertion compensation for PCM and ADPCM packets
Network jitter monitoring allows support of RTCP for PCM, ADPCM, HDLC and CPU connections
Policing on HDLC channels and CPU channels protects against misbehaving connections
PCM, ADPCM, HDLC and CPU mini-packets can all be transported on the same connection with chip's RTP
engine to guarantee consistency among the packets
In the disassembly module, synchronization deltas allow multiple independent connections to be
synchronized end-to-end, allowing, for example, transparent transport of a DS3 over many IP connections
or AAL2 CIDs
IP packet identification can be performed using any combination of IP source address, IP destination
address, UDP source port, UDP destination port and RTP Synchronization Source Identifier and are
programmable on a per-connection basis
Non-voice packets can be injected and received via the CPU Interface
Non-voice packets can be injected and received via the secondary UTOPIA port
The MT92220 can be daisy-chained to other UTOPIA devices to increase capacity
Off-the-shelf AAL5 SAR can be used to terminate data connections on a PCI bus
Support of 16 different look-up profiles, each one of which can use different fields from the packet headers
Look-up can be performed on a priority basis: for example, a packet can be looked-up using IP, UDP and
RTP headers, then the look-up result can request a second lookup using only IP and UDP headers
Binary tree of up to 128K nodes is used to route packets using packet identification key
Dynamically balanced tree system ensures optimal performance
IP, UDP and RTP header verification is performed
Multihoming is supported with any number of local IP addresses
Payload Type & Marker bit routing allows different compression formats as well as signaling packets to be
transported on the same connection
MPLS labels, MPOA tags and ELAN ID can be looked-up in binary tree to establish data format that will
follow them, logical subnet number and quality of service
Voice Treatment Functions
Network Functions
Zarlink Semiconductor Inc.