TLFD600

ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER

SLAS280B – MAY 2000 – REVISED NOVEMBER 2000

1

POST OFFICE BOX 655303

G.lite (G.992.2) ADSL Applications

Receiver for RX

Equalizer

and 2.0)

Rate for the RX Channel

Channel

Oscillator (VCXO) DAC and Digital

Phase-Lock Loop (DPLL)

Noise Floor

or C6000 DSP Families for Both Data and

Control

General-Purpose Digital Outputs

Flexibility

Modes

– 1.4 W With Line Driver Across 50-

Ω Load

Supplies

85

°C)

description

The TLFD600PAP is a high-speed, programmable, analog front end for customer premise equipment (CPE)

modems that supports G.lite (G.992.2) and full rate (G.992.1) ADSL applications and incorporates both the

codec and line drivers and receiver. The codec also coexists with home phoneline networking alliance

(HPNA)-devices, with the ability to work together with up to three HPNA devices connected to the same line.

The device performs transmit encoding (D/A conversion), receive decoding (A/D conversion), transmit and

receive filtering functions, receive equalizer, and programmable gain amplifications (PGA). The device also

incorporates a voltage compensated crystal oscillator (VCXO) DAC, DPLL, line driver, and receiver for TX and

RX channels which reduces the number of system components. Two auxiliary amplifiers are provided, on-chip,

for additional onboard filtering and amplification with additional off-chip passive components. The receive

channel has an update rate of 1.104 Msps in the G.lite mode and 2.208 Msps in the full rate mode. The transmit

channel has an update rate of 276 Ksps and 552 Ksps.

A simple serial interface on the digital side reduces system component count. Both data and control share the

same serial port. The interface can connect directly to the TI C6000 and C5000 families of DSP chips.

The device operates using 3.3-V and 12-V supply lines (12 V is used for the on-chip TX line driver) and is

packaged in a single 64-pin PAP (PowerPAD

) package. It is characterized for operation from –40°C to 85°C.

Copyright

 2000, Texas Instruments Incorporated

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.

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.