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RF/Microwave??

16-port T1/E1/J1 transceiver debuts

Posted: 25 Jul 2007 ?? ?Print Version ?Bookmark and Share

Keywords:16-port single-chip transceiver? BER tester? test equipment?

DS26519

Dallas Semiconductor, a subsidiary of Maxim Integrated Products, has introduced what it claims to be the industry's first 16-port T1/E1/J1 long- and short-haul transceiver.

At 16 ports, the DS26519 single-chip transceiver (SCT) is said to offer the highest integration and lowest cost per port in the industry. The high integration of the DS26519, along with its low 1.8V/3.3V power operation, makes it well suited for channel service units (CSUs), data service units (DSUs), muxes, switches, routers, channel banks and test equipment.

DS26519 saves space and cost by eliminating the need for mechanical relays typically required by redundancy protection implementations. This device uses hitless protection switching (HPS) to provide reliable redundancy protection by presenting high impedance at transmit outputs and receive inputs when power is not applied. Additional space and cost savings are provided by its software-selectable, internal receive- and transmit-side termination for 75次, E1 coaxial, 100次, T1 twisted-pair, 110次, J1 twisted-pair or 120次 and E1 twisted-pair applications.

DS26519 provides comprehensive functions for monitoring performance and communicating diagnostic information. The diagnostic suite includes, but is not limited to a BER tester, loss-of-signal indication, analog, local, remote and dual loopbacks, large error counters for BPV, CV, CRC-6, CRC-4 and E-bit, in-band repeating-pattern generation/detection and JTAG. Also included is an internal clock-rate adapter and a HDLC controller with a 64byte buffer in both the transmit and receive paths.

The DS26519 device is available in a thermally robust 23mm x 23mm, 484-pin HSBGA package. DS26518 is also available as a software compatible 8-port version in a 17mm x 17mm, 256-pin BGA package. Evaluation kits with supporting software, driver source code and reference designs are available for both devices. Prices start at $69.96 for the DS26519 and at $40.60 for the DS26518 for 5,000-unit pieces.




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