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See Technical Specifications

DS92LX2121SQE/NOPB

10-MHz to 50-MHz DC-balanced Channel Link III Bi-Directional control serializer

Manufacturer: Texas Instruments, Inc
Mfr.Part #: DS92LX2121SQE/NOPB
Datasheet: DS92LX2121SQE/NOPB Datasheet (PDF)
Function: Serializer
Data Rate: 1.05Gbps
Input Type: Channel Link III (LVCMOS)
Output Type: Channel Link III (CML)
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DS92LX2121SQE/NOPB General 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.

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Key Features

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
- 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

Specifications

Category	Integrated Circuits (ICs)InterfaceSerializers, Deserializers	Mfr	Texas Instruments
Series	-	Package	Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status	Active	Function	Serializer
Data Rate	1.05Gbps	Input Type	Channel Link III (LVCMOS)
Output Type	Channel Link III (CML)	Number of Inputs	21
Number of Outputs	1	Voltage - Supply	1.71V ~ 1.89V, 3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)	Mounting Type	Surface Mount
Supplier Device Package	40-WQFN (6x6)	Base Product Number	DS92LX2121
Protocols	Catalog	Rating	Catalog
Operating temperature range (°C)	-40 to 85	feature-function	Serializer
feature-number-of-drivers	1	feature-number-of-receivers	1
feature-number-of-elements-per-chip	1	feature-transmission-data-rate-mbps	1050
feature-maximum-propagation-delay-time-ns		feature-input-signal-type	LVCMOS
feature-differential-input-low-threshold-voltage-v	-0.09	feature-differential-input-high-threshold-voltage-v	0.09
feature-maximum-differential-output-voltage-v	0.412	feature-maximum-input-current-ua	20
feature-supplier-temperature-grade		feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	40
feature-supplier-package	WQFN EP	feature-standard-package-name1	QFN
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-escc-qualified		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-auto-motive	No	feature-p-pap	No
feature-eccn-code	5A991b.1.	feature-svhc	Yes
feature-svhc-exceeds-threshold	No