DESCRIPTION
The PM4332 High Density 32 Channel T1/E1 Framer is a feature-rich device for use in any application requiring high density framing of T1/J1 and E1 links.
Each of the T1 and E1 framers and transmitters is independently software configurable, allowing timing master and feature selection without changes to external wiring. However, mixed framing modes are not supported. The framers must be all configured for either T1 or E1 framing.

FEATURES
• High Density 32 channel T1/E1/J1 framer.
• Software selectable between T1/J1 or E1 operation on a per device basis.
• Supports 8 Mbit/s H-MVIP on the system interface for all T1 or E1 links, a separate 8 Mbit/s H-MVIP system interface for all T1 or E1 CAS channels and a separate 8 Mbit/s H-MVIP system interface for all T1 or E1 CCS and V5.1/V5.2 channels.
• Supports a byte serial Scaleable Bandwidth Interconnect (SBI) bus interface for high density system side device interconnection of up to 32 T1 streams, 32 E1 streams.
• Provides jitter attenuation in the T1 or E1 receive and transmit directions.
• Provides three independent de-jittered T1 or E1 recovered clocks for system timing and redundancy.
• Provides per link diagnostic and line loopbacks.
• Also provides PRBS generators and detectors on each tributary for error testing at DS1, E1 and NxDS0 rates as recommended in ITU-T O.151 and O.152.
• Provides a generic 8-bit microprocessor bus interface for configuration, control and status monitoring. Provides a standard 5 signal P1149.1 JTAG test port for boundary scan board test purposes.
• Low power 1.8V/3.3V CMOS technology. All pins are 5V tolerant.
• 324-pin fine pitch PBGA package (23mm x 23mm). Supports industrial temperature range (-40 oC to 85 oC) operation.
• Line side interface is SBI bus.
• System side interface is either H-MVIP or SBI bus.

 APPLICATIONS
• Multiservice Switches
• Voice Gateways
• Wireless Base Station Controllers
• Edge Routers
• Multiservice Add-Drop Multiplexers
• Digital Access Cross-Connect Systems