TLK2208B Datasheet, PDF (1/40 Pages) Texas Instruments – 8-PORT GIGABIT ETHERNET TRANCSEIVER

D Eight 1.0- to 1.3-Gigabits Per Second
(Gbps) Synchronizable Transceivers
D Low Power Consumption <1.3 W at
1.25 Gbps
D IEEE 802.3z Gigabit Ethernet Compliant
D Differential VML Transmit Outputs With
No External Components Necessary.
PECL Compatible Levels
D Programmable High-Speed Output
Preemphasis Levels
D Selectable Parallel Interface Modes:
− Nibble-Wide Double Data Rate (DDR)
Clocking Interface
− Multiplexed Channel DDR Clock
Interface
D Selectable Clock Tolerance
Compensation
D Selectable On-Chip 8b/10b IEEE 802.3z
Compliant Encoder and Decoder
D JEDEC-Compliant 1.8-V LVCMOS
(Extendable to 2.5 V)
TLK2208B
8ĆPORT GIGABIT ETHERNET TRANSCEIVER
SLLS578D − AUGUST 2003 − REVISED SEPTEMBER 2006
D 3.6-V Tolerant Inputs on Parallel I/O
D Internal Series Termination on LVCMOS
Outputs to Drive 50-Ω Lines
D Comprehensive Suite of Built-In
Testability Features (PRBS Generation
and Verification, Serial Loopback, and
Far-End Loopback)
D IEEE 802.3 Clause 22 Management Data
Interface (MDIO) Support
D IEEE 1149.1 JTAG Support
D Hot-Plug Protection on Serial I/O
D No External Filter Components
Required for PLLs
D Small Footprint 19×19-mm,
289-Terminal, 1,0-mm Ball-Pitch BGA
D Advanced Low-Power 0.18-µm CMOS
Technology
D Commercial Temperature Rating (0°C to
70°C)
description
The TLK2208B is the third generation of Gigabit Ethernet transceivers from Texas Instruments combining high
port density and ultralow power in a small form-factor footprint. The TLK2208B provides for high-speed
full-duplex point-to-point data transmissions based on the IEEE 802.3z 1000-Mbps Ethernet specification. The
TLK2208B supports data rates from 1.0 Gbps through 1.3 Gbps.
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 Ω. The transmission media can be printed circuit board
traces, copper cables or fiber-optical interface modules. The ultimate rate and distance of data transfer is
dependent upon the attenuation characteristics of the media and the noise coupling to the environment.
The TLK2208B 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 8.32 Gbps of aggregate data bandwidth over copper or optical-media interfaces.
The TLK2208B supports two selectable reduced-pin-count double-data-rate (DDR) timing interfaces, nibble
mode and multiplexed channel mode, to a protocol device.
In the nibble interface mode, the parallel interface accepts nibble-wide unencoded or 8b/10b encoded data
aligned to both the rising and falling edges of the transmit clock.
In the multiplexed channel mode, the parallel interface accepts 8-bit-wide unencoded or 10-bit-wide 8b/10b
encoded data with channels A, C, E, and G aligned to the falling edge of the source synchronous transmit clock
and channels B, D, F, and H aligned to the rising edge of the transmit clock. The receive path interface is done
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2003 − 2006, Texas Instruments Incorporated
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