DS21Q58
E1 Quad Transceiver
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Overview
Features and Benefits
- Four Complete E1 (CEPT) PCM-30/ISDN-PRI Transceivers
- Pin Compatible with the DS21Q50 and DS21Q59
- Short-Haul Line Interfaces
- 32-Bit or 128-Bit Crystal-Less Jitter Attenuator
- Frames to FAS, CAS, and CRC4 Formats
- CAS/CCS Signaling Support
- 4MHz/8MHz/16MHz Clock Synthesizer
- Flexible System Clock with Automatic Source Switching on Loss-of-Clock Source
- Two-Frame Elastic-Store Slip Buffer on the Receive Side
- Interleaving PCM Bus Operation Up to 16.384MHz
- Configurable Parallel and Serial Port Operation
- Detects and Generates Remote and AIS Alarms
- Fully Independent Transmit and Receive Functionality
- Four Separate Loopback Functions
- PRBS Generation/Detection/Error Counting
- 3.3V Low-Power CMOS
- Large Counters for Bipolar and Code Violations, CRC4 Codeword Errors, FAS Word Errors, and E Bits
- Eight Additional User-Configurable Output Pins
- 100-Pin (14mm x 14mm) LQFP Package
Product Details
The DS21Q58 E1 quad transceiver contains all the necessary functions for connecting to four E1 lines. The DS21Q58 is a direct replacement for the DS21Q50, with the addition of signaling access and improved interrupt handling. It is composed of a line interface unit (LIU), framer, and a TDM backplane interface, and is controlled through an 8-bit parallel port configured for Intel or Motorola bus operations or serial port operation.
Applications
- Add/Drop Multiplexers
- Central Office Equipment
- Customer Premise Equipment
- DSLAM Backplane
- IMA
- Line Cards
- PBXs
- Routers/Switches
- Routers/Switches
- Timing Systems
- WAN Interface
Documentation & Resources
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DS21Q58: E1 Quad Transceiver Data Sheet (Rev. 1)1/21/2004PDF647K
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Selecting a T1/E1/J1 Single-Chip Transceiver3/24/2004
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T1/E1 and T3/E3 Transformer Selection Guide10/15/2001