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T1/E1/J1 transceiver includes cell/packet/TDM interface

Posted: 17 Feb 2005 ?? ?Print Version ?Bookmark and Share

Keywords:dallas semiconductor? ds26556? transceiver?

Dallas Semiconductor released what it claims as the only multiport T1/E1/J1 transceiver available with a cell/packet/TDM interface.

According to the press release, the DS26556 transceiver contains all the line interface and framer functions necessary to connect four T1, E1 or J1 lines. No relays or switched external components are required, and a single clock supports all standard T1, E1 or J1 operating modes, said Dallas. The device also supports UTOPIA (Level 2 and 3) and POS/PHY (Level 2 and 3) system interfaces, as well as a TDM backplane interface that can operate at bus rates up to 16.384MHz.

Additional features include software-selectable receive and transmit termination, one HDLC controller per port, programmable bit error-rate testing (BERT), and optional crystal-less jitter


The DS26556 is housed in a 17-by-17mm BGA package and is available in commercial and industrial operating temperature ranges. Prices start at $44 (1,000-up, FOB USA). Evaluation kits are also available.

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