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相关产品
产品信息
DS21354L+
3.3V/5V E1 Single-Chip Transceivers
电信接口IC 3.3/5V E1 Single Chip Transceiver
DS21354L+ GENERAL DESCRIPTION
The DS21354L+ DS21354/DS213554 single-chip transceivers (SCTs) contain all the necessary functions to connect to E1 lines. The devices are upward-compatible versions of the DS2153 and DS2154 SCTs. The on-board clock/data recovery circuitry coverts the AMI/HDB3 E1 waveforms to an NRZ serial stream.
DS21354L+ FEATURES
Complete E1 (CEPT) PCM-30/ISDN-PRI
Transceiver Functionality
On-Board Long- and Short-Haul Line Interface
for Clock/Data Recovery and Waveshaping
32-Bit or 128-Bit Crystal-Less Jitter Attenuator
Frames to FAS, CAS, CCS, and CRC4 Formats
Integral HDLC Controller with 64-Byte Buffers
Configurable for Sa Bits, DS0, or Sub-DS0
Operation
Dual Two-Frame Elastic Store Slip Buffers that
can Connect to Asynchronous Backplanes up to
8.192MHz
Interleaving PCM Bus Operation
8-Bit Parallel Control Port that can be used
Directly on Either Multiplexed or
Nonmultiplexed Buses (Intel or Motorola)
Extracts and Inserts CAS Signaling
Detects and Generates Remote and AIS Alarms
Programmable Output Clocks for Fractional E1,
H0, and H12 Applications
Fully Independent Transmit and Receive
Functionality
Full Access to Si and Sa Bits Aligned with
CRC-4 Multiframe
