Ethernet Mapper with Integrated T1/E1/J1 Transceiver

The DS33R11 extends a 10/100 Ethernet LAN segment by encapsulating MAC frames in HDLC or X.86 (LAPS) for transmission over a T1/E1/J1 data stream.

The device performs store-and-forward of packets with full wire-speed transport capability. The built-in Committed Information Rate (CIR) Controller provides fractional bandwidth allocation up to the line rate in increments of 512kbps. The DS33R11 can operate with an inexpensive external processor.

Applications

* Ethernet Delivery Over T1/E1/J1 * LAN Extension * Transparent LAN Service

* 10/100 IEEE 802.3 Ethernet MAC (MII and RMII) Half/Full Duplex with Automatic Flow Control

* Integrated T1/E1/J1 Framer and LIU

* HDLC/LAPS Encapsulation with Programmable FCS and Interframe Fill

* Committed Information Rate Controller Provides Fractional Allocations in 512kbps Increments

* Programmable BERT for Serial (TDM) Interface

* External 16MB, 100MHz SDRAM Buffering

* Parallel Microprocessor Interface

* 1.8V, 3.3V Supplies

* Reference Design Routes on Two Signal Layers

* IEEE 1149.1 JTAG Support