1FEATURES

2• General

– Up to 1050 Mbits/sec Data Throughput

– 10 MHz to 50 MHz Input Clock Support

– Supports 18-bit Color Depth (RGB666 + HS,

VS, DE)

– Embedded Clock with DC Balanced Coding

to Support AC-Coupled Interconnects

– Capable to Drive up to 10 Meters Shielded

Twisted-Pair

– Bi-Directional Control Interface Channel

with I2C Support

– I2C Interface for Device Configuration.

Single-Pin ID Addressing

– Up to 4 GPI on DES and GPO on SER bi–

AT-SPEED BIST Diagnosis Feature to

Validate Link Integrity

– Individual Power-Down Controls for both

SER and DES

– User-Selectable Clock Edge for Parallel

Data on both SER and DES

– Integrated Termination Resistors

– 1.8V- or 3.3V-Compatible Parallel Bus

Interface

– Single Power Supply at 1.8V

– IEC 61000–4–2 ESD Compliant

– Temperature Range −40°C to +85°C

• DESERIALIZER — DS92LX2122

– No Reference Clock Required on

Deserializer

– Programmable Receive Equalization

– LOCK Output Reporting Pin to Ensure

– EMI/EMC Mitigation

– Programmable Spread Spectrum (SSCG)

Outputs

– Receiver Output Drive Strength Control

(RDS)

– Receiver Staggered Outputs

APPLICATIONS

• Industrial Displays, Touch Screens

• Medical Imaging

DESCRIPTION

The DS92LX2121/DS92LX2122 chipset offers a

Channel Link III interface with a high-speed forward

channel and a full-duplex control channel for data

transmission over a single differential pair. The

DS92LX2121/DS92LX2122 incorporates differential

signaling on both the high-speed and bi-directional

back channel control data paths. The Serializer/

Deserializer pair is targeted for direct connections between graphics host controller and displays

modules. This chipset is ideally suited for driving

video data to displays requiring 18-bit color depth

(RGB666 + HS, VS, and DE) along with a bi–

directional back channel control bus. The primary transport converts 21 bit data over a single high-

speed serial stream, along with a separate low

latency bi-directional back channel transport that

accepts control information from an I2C port. Using

TI’s embedded clock technology allows transparent

full-duplex communication over a single differential pair, carrying asymmetrical bi-directional back

channel control information in both directions. This

single serial stream simplifies transferring a wide data

bus over PCB traces and cable by eliminating the

skew problems between parallel data and clock paths. This significantly saves system cost by

narrowing data paths that in turn reduce cable width,

connector size and pins.

In addition, the Deserializer provides input

equalization to compensate for loss from the media

over longer distances. Internal DC balanced

encoding/decoding is used to support AC-Coupled interconnects.

A sleep function provides a power-savings mode

when the high speed forward channel and embedded

bi-directional control channel are not needed.

The Serializer is offered in a 40-pin lead in WQFN

and Deserializer is offered in a 48-pin WQFN

packages.