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TI GbE transceiver consumes 162mW per channel

Posted: 06 Jan 2003 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? tlk2206? gbe transceiver? gigabit Ethernet transceiver? ieee 802.3z?

The TLK2206 eight-port GbE transceiver from Texas Instruments Inc. has a maximum power consumption of 162mW per channel at 1.25Gbps - 20 percent lower than comparable devices. Other single-channel devices operating at the similar rate consume 200mW.

Manufactured using a 0.18?m CMOS process, the octal device is available in a 289-ball BGA with a 19-by-19mm footprint and is suitable for serial backplanes, switches, and routers operating at GbE speeds.

The eight full-duplex channels of the IC, compliant with the IEEE 802.3z GbE specification, are synchronizable at speeds from 1Gbps to 1.3Gbps. The channels can be used with independent timing in either of two selectable parallel interface modes. Based on reduced-pin DDR timing, the dual-mode feature allows the transceiver to interface to existing ASICs and FPGAs. Also, the device's timing mechanism provides compatibility with both source-synchronous and source-centered ASICs.

On the serial output, the TLK2208 features programmable pre-emphasis to support transmissions over long distances without data loss. Voltage-mode logic drivers on the serial side require no external capacitors or pull-down resistors, saving board space and lowering component counts while eliminating power consumption from external passive devices.

The TLK2206 also has a selectable clock tolerance that the company claims to allow the easier synchronization of clock and data, helping simplify design. An integrated 8-bit/10-bit encoder/decoder with bypass is also included to add more flexibility to the board designer.





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