TLK1501_12 Datasheet, PDF (1/32 Pages) Texas Instruments – 0.6 TO 1.5 GBPS TRANSCEIVER

TLK1501
0.6 TO 1.5 GBPS TRANSCEIVER
D Hot Plug Protection
D 0.6 to 1.5 Gigabits Per Second (Gbps)
Serializer/Deserializer
D High-Performance 64-Pin VQFP Thermally
Enhanced Package (PowerPAD)
D 2.5 V Power Supply for Low Power
Operation
D Programmable Voltage Output Swing on
Serial Output
D Interfaces to Backplane, Copper Cables, or
Optical Converters
D Rated for Industrial Temperature Range
SLLS428F − JUNE 2000 − REVISED JANUARY 2004
D On-Chip 8-Bit/10-Bit (8B/10B)
Encoding/Decoding, Comma Alignment,
and Link Synchronization
D On-Chip PLL Provides Clock Synthesis
From Low-Speed Reference
D Receiver Differential Input Thresholds
200 mV Minimum
D Typical Power: 250 mW
D Loss of Signal (LOS) Detection
D Ideal for High-Speed Backplane
Interconnect and Point-to-Point Data Link
description
The TLK1501 is a member of the transceiver family of multigigabit transceivers used in ultrahigh-speed
bidirectional point-to-point data transmission systems. The TLK1501 supports an effective serial interface
speed of 0.6 Gbps to 1.5 Gbps, providing up to 1.2 Gbps of data bandwidth. The TLK1501 is pin-for-pin
compatible with the TLK2500. The TLK1501 is both pin-for-pin compatible with and functionally identical to the
TLK2501, a 1.6 to 2.5 Gbps transceiver, providing a wide range of performance solutions with no required board
layout changes.
The primary application of this chip is to provide very high-speed I/O data channels for point-to-point baseband
data transmission over controlled impedance media of approximately 50 Ω. The transmission media can be
printed-circuit board, copper cables, or fiber-optic cable. The maximum rate and distance of data transfer is
dependent upon the attenuation characteristics of the media and the noise coupling to the environment.
This device can also be used to replace parallel data transmission architectures by providing a reduction in the
number of traces, connector terminals, and transmit/receive terminals. Parallel data loaded into the transmitter
is delivered to the receiver over a serial channel, which can be a coaxial copper cable, a controlled impedance
backplane, or an optical link. It is then reconstructed into its original parallel format. It offers significant power
and cost savings over current solutions, as well as scalability for higher data rate in the future.
The TLK1501 performs data conversion parallel-to-serial and serial-to-parallel. The clock extraction functions
as a physical layer interface device. The serial transceiver interface operates at a maximum speed of 1.5 Gbps.
The transmitter latches 16-bit parallel data at a rate based on the supplied reference clock (GTX_CLK). The
16-bit parallel data is internally encoded into 20 bits using an 8-bit/10-bit (8B/10B) encoding format. The
resulting 20-bit word is then transmitted differentially at 20 times the reference clock (GTX_CLK) rate. The
receiver section performs the serial-to-parallel conversion on the input data, synchronizing the resulting 20-bit
wide parallel data to the extracted reference clock (RX_CLK). It then decodes the 20 bit wide data using
8-bit/10-bit decoding format resulting in 16 bits of parallel data at the receive data terminals (RXD0-15). The
outcome is an effective data payload of 480 Mbps to 1.2 Gbps (16 bits data x the GTX_CLK frequency).
The TLK1501 is housed in a high performance, thermally enhanced, 64-pin VQFP PowerPAD package. Use
of the PowerPAD package does not require any special considerations except to note that the PowerPAD, which
is an exposed die pad on the bottom of the device, is a metallic thermal and electrical conductor. It is
recommended that the TLK1501 PowerPAD be soldered to the thermal land on the board. All ac performance
specifications in this data sheet are measured with the PowerPAD soldered to the test board.
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.
PowerPAD is a trademark of Texas Instruments.
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  2000 − 2004, Texas Instruments Incorporated
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