Features 10 MHz to 43 MHz input PCLK support 210 Mbps to 903 Mbps data throughput Single differential pair interconnect Bidirectional control interface channel with I 2C support Embedded clock with DC Balanced coding to support AC-coupled interconnects Capable to drive up to 10 meters shielded twisted-pair I 2C compatible serial interface Single hardware device addressing pin Up to 4 General Purpose Input (GPI)/ Output (GPO) LOCK output reporting pin and AT-SPEED BIST diagnosis feature to validate link integrity Integrated termination resistors 1.8V- or 3.3V-compatible parallel bus interface Single power supply at 1.8V ISO 10605 ESD and IEC 61000-4-2 ESD compliant Automotive grade product: AEC-Q100 Grade 2 qualified Temperature range −40°C to +105°C No reference clock required on Deserializer Programmable Receive Equalization EMI/EMC Mitigation DES Programmable Spread Spectrum (SSCG) outputs DES Receiver staggered outputs Description The DS90UB903Q/DS90UB904Q chipset offers a FPD-Link III interface with a high-speed forward channel and a bidirectional control channel for data transmission over a single differential pair. The DS90UB903Q/904Q incorporates differential signaling on both the high-speed forward channel and bidirectional control channel 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 bidirectional control channel bus. The primary transport converts 21 bit data over a single high-speed serial stream, along with a separate low latency bidirectional control channel transport that accepts control information from an I 2C port. Using National’s embedded clock technology allows transparent full-duplex communication over a single differential pair, carrying asymmetrical bidirectional control channel 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 PCB layers, cable width, and connector size and pins. In addition, the Deserializer inputs provide equalization control to compensate for loss from the media over longer distances. Internal DC balanced encoding/decoding is used to support AC-Coupled interconnects. The Serializer is offered in a 40-pin lead in LLP and Deserializer is offered in a 48-pin LLP packages. Applications Automotive Display Systems Central Information Displays Navigation Displays Rear Seat Entertainment Touch Screen Displays

Also Recommended DS90UB904Q▲ Companion Deserializer Applications Diagram

Typical Application *click for larger image Applications Diagram	Block Diagram *click for larger image DS90UB903Q/DS90UB904Q BLOCK DIAGRAM

Parameters / Values	DS90UB903Q	DS90UB904Q
Color Depth	18 bpp	18 bpp
Pixel Clock Min	10 MHz	10 MHz
Pixel Clock Max	43 MHz	43 MHz
Function	Serializer	Deserializer
Output Compatibility	CML	LVCMOS
Control Channel	I2C, GPO	I2C. GPI
EMI Reduction	RBS Coding	SSCG, Staggered Outputs
Signal Conditioning	DC Balance	Programmable Equalizer
Diagnostics	BIST	BIST
Input Compatibility	LVCMOS	CML
Parallel Bus Width	21 bits	21 bits
Total Throughput	900 Mbps	900 Mbps
AEC Q-100 Automotive Grade	2	2
Temperature Min	-40 deg C	-40 deg C
Temperature Max	105 deg C	105 deg C

Datasheets

Title		Size	Date	Other Language
	DS90UB903Q 10 - 43MHz 18 Bit Color FPD-Link III Serializer with Bidirectional Control Channel	907 Kbytes	14-Jan-11

Application Notes

Title		Size	Date	Other Language
	AN-2173: Application Note 2173 I2C Communication Over FPD-Link III with Bidirectional Control Channel	247 Kbytes	14-Jul-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS90UB903QSQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.85 each at 1K+ pcs	reel of 1000
DS90UB903QSQE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 731 MOUSER Worldwide 239	$5.85 each at 1K+ pcs	reel of 250
DS90UB903QSQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.85 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90UB903Q.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90UB903Q is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
SERDESUB-21USB/NOPB	FPD Link III - DS90UB903Q & DS90UB904Q EVK	Preliminary Lead Free (RoHS)	Distributor Region Qty MOUSER Worldwide 2	CALL	N/A
Description: The SERDESUB-21USB is an evaluation kit designed to demonstrate performance and capabilities of the DS90UB903Q and DS90UB904Q FPD-Link III Serializer/Deserializer chipset. The chipset enables transmission of a high-speed video data along with a low latency bidirectional control bus over a single twisted pair cable. The integrated control channel transfers data simultaneously over the same serial video link. The DS90UB903Q Serializer board accepts LVCMOS input signals along with a low latency bidirectional control bus and provides a single serialized FPD-Link III LVDS data pair as an output. The DS90UB904Q Deserializer board accepts FPD-Link III LVDS serialized data stream and converts the data back into parallel LVCMOS signals along with a bidirectional control bus. A USB cable is provided as a generic medium for the high speed data link. The I2C interface allows communication and configuration features of the Serializer and Deserializer. Features: 10 MHz to 43 MHz input PCLK support Single differential pair interconnect Bidirectional control interface channel with I2C support Embedded clock with DC Balanced coding to support AC-coupled interconnects Capable to drive up to 10 meters shielded twisted-pair LOCK output reporting pin and AT-SPEED BIST diagnosis feature to validate link integrity Integrated termination resistors 1.8V - or 3.3V-compatible parallel bus interface Single power supply at 1.8V No reference clock required on Deserializer Programmable Receive Equalization EMI/EMC Mitigation Contents: One Serializer board with the DS90UB903Q One Deserializer board with the DS90UB904Q One 2-meter high speed USB 2.0 cable assembly Evaluation Kit Documentation

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS90UB903QSQ/NOPB	99.658	LLP	40	3	260	Detail	N/A	N/A	NS UZXYTTE# UB903QSQ
DS90UB903QSQE/NOPB	99.658	LLP	40	3	260	Detail	N/A	N/A	NS UZXYTTE# UB903QSQ
DS90UB903QSQX/NOPB	99.658	LLP	40	3	260	Detail	N/A	N/A	NS UZXYTTE# UB903QSQ

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90UB903Q.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90UB903Q is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

DS90UB90x FPD-Link III SerDes Multi-Camera Demo Loading video... DS90UB90x FPD-Link III SerDes Single Camera Demo Loading video... Intro to FPD-Link III SerDes with Bidirectional Control Channel for Auto Infotainment Loading video...

DS90UB90x FPD-Link III SerDes Multi-Camera Demo Date: 2010-10-06 Length: 00:02:52 DS90UB90x FPD-Link III SerDes Single Camera Demo Date: 2010-10-06 Length: 00:03:10 Intro to FPD-Link III SerDes with Bidirectional Control Channel for Auto Infotainment Date: 2010-03-26 Length: 00:48:14