The TLK2226 is the third generation of Gigabit Ethernet transceivers from Texas Instruments combining high port density and ultra-low power in a small form factor footprint. The TLK2226 provides for high-speed full-duplex point-to-point data transmissions based on the IEEE802.3z 1000Mbps Ethernet specification. The TLK2226 supports data rates from 1.0 Gbps through 1.3 Gbps. Each channel is capable of operating at 125 Mbps for IEEE Ethernet 100FX mode, and the rate for each channel may be set through MDIO or automatically sensed and set by the TLK2226.The primary application of this device is to provide building blocks for developing point-to-point baseband data transmission over controlled impedance media of 50 . The transmission media can be printed circuit board traces, copper cables or fiber-optical media. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment. This device performs the data encoding, decoding, serialization, deserialization, clock extraction and clock tolerance compensation functions for a physical layer interface device. Each channel operates at up to 1.3 Gbps providing up to 7.5 Gbps of aggregate data bandwidth over a copper or optical media interface. The TLK2226 has six channels of SERDES each with 5 bit busses clocked double data rate (DDR). The parallel interface accepts un-encoded or 5-bit wide encoded data aligned to both the rising and falling edge of the transmit clock. The data is clocked low-order bits first, (i.e. bits 04 of the 8b/10b encoded data) on the rising edge of the transmit clock and the high-order bits (i.e. bits 59 of the 8b/10b encoded data) are clocked on the falling edge of the clock. The receive path interface is clocked in the same manner. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.