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Description
The PM7344-RI is a monolithic integrated circuit that serves as a quad T1/E1 Multi-PHY User Network Interface (S/UNIMPH). It is designed to handle the T1/E1 processing and ATM mapping functions for four 1.544 Mbit/s or 2.048 Mbit/s ATM User Network Interfaces. The PM7344-RI can also be used with external framing devices to support other bit rates. It meets the requirements of both ANSI and ITU standards as well as ATM Forum UNI specifications. The chip is software configurable, allowing for feature selection without the need for changes to external wiring.
Specifications and features
- Single chip quad ATM User Network Interface operating at 1.544 Mbit/s or 2.048 Mbit/s.
- Implements the ATM Forum User Network Interface Specification V3.1 for DS1 and E1 transmission rates.
- Implements the ATM physical layer for Broadband ISDN according to ITU-T Recommendation I.432.
- Implements direct cell mapping into DS1 or E1 transmission systems according to ITU-T Recommendation G.804.
- Implements direct cell mapping into J2 (6.312 Mbit/s) transmission systems with the use of external framer devices, as per ITU-T Recommendation G.804.
- Integrates a quad full-featured T1/E1 framer/transmitter for terminating four duplex 1.544 Mbit/s DS-1 signals or four duplex 2.048 Mbit/s E1 signals.
- Integrates a quad ATM cell processor for mapping ATM cells into T1, E1, and other arbitrary rate streams using HEC (Header Check Sequence Error Correction) cell delineation.
- Provides Saturn Compatible Interface (SCI-PHYTM) FIFO buffers in both transmit and receive paths with parity support and Utopia Level 2 compatible multi-PHY control signals.
- Software compatible with the PM4341A T1XC, PM6341 E1XC, and PM7345 S/UNI-PDH.
- Provides a standard 5 signal P1149.1 JTAG test port for boundary scan board test purposes.
- Provides a generic 8-bit microprocessor bus interface for configuration, control, and status monitoring.
- Low power, +5V, CMOS technology.
- 128 pin rectangular (14mm x 20mm) PQFP package.
Application Scenarios
- ATM Switches Supporting DS1 or E1 UNI Ports
- ATM Switches Supporting DS3 Ports Carrying Multiplexed DS1 or E1 UNI Signals
- ATM Switches Supporting STS-3/STM-1 Or Other SONET/SDH Ports Carrying Tributary Mapped DS1 or E1 UNI Signals
- ATM Customer Premise Equipment Supporting Multiple DS1 or E1 UNI Ports
Comparison
Advantages- Single chip quad ATM User Network Interface supporting multiple transmission rates
- Fully compliant with ANSI, ITU, and ATM Forum standards
- Software configurable for easy feature selection
- Integrates T1/E1 framer/transmitter and ATM cell processor for seamless operation
- Provides standard interfaces for testing and monitoring
- Low power consumption and compact size
Disadvantages- External framing devices required for mapping into J2 transmission systems
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download PM7344-RI
- Chipdatas Part: CD94-PM7344-RI
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 17:46 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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