Features 5 MHz–43 MHz embedded clock & DC-Balanced data transmission (21 total LVDS data bits plus 3 low speed LVCMOS data bits) User adjustable pre-emphasis driving ability through external resistor on LVDS outputs and capable to drive up to 10 meters shielded twisted-pair cable Supports AC-coupling data transmission 100Ω Integrated termination resistor at LVDS input Power-down control Available @SPEED BIST to DS90UR124 to validate link integrity All LVCMOS inputs & control pins have internal pulldown Schmitt trigger inputs on OS[2:0] to minimize metastable conditions. Outputs Tri-Stated through DEN On-chip filters for PLLs Power supply range 3.3V ± 10% Automotive temperature range −40°C to +105°C Greater than 8kV ESD Tolerance Meets ISO 10605 ESD and AEC-Q100 compliance Description The DS99R421 converts a FPD-Link input with 4 non-DC Balanced LVDS (3 LVDS Data + LVDS Clock) plus 3 over-sampled low speed control bits into a single LVDS DC-balanced serial stream with embedded clock information. This single serial stream simplifies transferring the 24-bit bus over a single differential pair of PCB traces and cable by eliminating the skew problems between the 3 parallel LVDS data inputs and LVDS clock paths. It saves system cost by narrowing 4 LVDS pairs to 1 LVDS pair that in turn reduce PCB layers, cable width, connector size, and pins. The DS99R421 incorporates a single serialized LVDS signal on the high-speed I/O. Embedded clock LVDS provides a low power and low noise environment for reliably transferring data over a serial transmission path. By optimizing the converter output edge rate for the operating frequency range EMI is further reduced. In addition the device features pre-emphasis to boost signals over longer distances using lossy cables. Internal DC balanced encoding is used to support AC-Coupled interconnects.

Also Recommended DS90UR124▲ Alternate Deserializer With LVCMOS Outputs DS90UR241▲ Companion Serialilzer With LVCMOS Inputs

Typical Application *click for larger image	Connection Diagram *click for larger image

Parameters / Values	DS99R421	DS90UR124	DS90UR241
Color Depth	18 bpp	18 bpp	18 bpp
Pixel Clock Min	5 MHz	5 MHz	5 MHz
Pixel Clock Max	43 MHz	43 MHz	43 MHz
Function	Serializer	Deserializer	Serializer
Output Compatibility	FPD-Link II LVDS	LVCMOS	FPD-Link LVDS
Backward Compatibility	w/ UR only	w/ C	w/ C
Signal Conditioning	Pre-emphasis	Pre-emphasis, VOD Select	Pre-emphasis, VOD Select
Diagnostics	BIST	BIST	BIST
Special Features	Pre-Emphasis, DC Balance, VOD Select	Adjustable Progressive Turn On (PTO), Slew Rate Control	Pre-Emphasis, DC Balance, VOD Select
Input Compatibility	FPD-Link LVDS	FPD-Link II LVDS	LVCMOS
AEC Q-100 Automotive Grade	2	Undefined, 2	Undefined, 2
Total Throughput	1032 Mbps	1032 Mbps	1032 Mbps
Payload/Channel	1032 Mbps	1032 Mbps	1032 Mbps
Reference Clock Req'd Deserializer	No	No	No
Embedded Clock	Yes	Yes	Yes
Parallel Bus Width	3 bits	24 bits	24 bits
Eval Kit	FPDXSDUR-43USB	SERDESUR-43USB	SERDESUR-43USB
ESD	8 kV	8 kV	8 kV
Supply Voltage	3.3 Volt	3.3 Volt	3.3 Volt
Temperature Min	-40 deg C	-40 deg C	-40 deg C
Temperature Max	105 deg C	105 deg C	105 deg C
PowerWise	No	No	No
Automotive	Yes	Yes	Yes
Communications	No	No	No
Sensing & Imaging	Yes	Yes	Yes
DisplayType	LCD	LCD	LCD

Datasheets

Title		Size	Date	Other Language
	DS99R421 5-43 MHz FPD-Link LVDS (3 Data + 1 Clock) to FPD-Link II LVDS (Embedded Clock DC-Balanced) Converter	1036 Kbytes	1-Sep-09	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1826: Application Note 1826 Extending the Reach of a FPD-Link II Interface with Cable Drivers and Equalizers	251 Kbytes	24-Mar-08	中文
	AN-1807: Application Note 1807 FPD-Link II Display SerDes Overview	106 Kbytes	4-Nov-09	中文
	AN-1898: Application Note 1898 LVDS Repeaters and Crosspoints Extend the Reach of FPD-Link II Interfaces	308 Kbytes	4-Sep-08	中文

Other Technical Documents

Title		Type	Date
	High-Definition Displays Hit the Highway	External Article	2010-01-05

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS99R421ISQ/NOPB RoHS Status	LLP	Not recommended for new designs (as of 15-Feb-08) Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.90 each at 1K+ pcs	reel of 250
DS99R421ISQX/NOPB RoHS Status	LLP	Not recommended for new designs (as of 15-Feb-08) Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.90 each at 1K+ pcs	reel of 2500
DS99R421QSQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 249 MOUSER Worldwide 248	$6.15 each at 1K+ pcs	reel of 250
DS99R421QSQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$6.15 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 DS99R421.

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 DS99R421 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
FPDXSDUR-43USB/NOPB	FPD- Link LVDS to FPD-Link II Embedded Clock LVDS Converter DS99R421 Evaluation Kit	Full production Lead Free (RoHS)	Distributor Region Qty DIGI-KEY Worldwide 0	$249.00 each	1
Description: The FPDXSDUR-43USB is an evaluation kit designed to demonstrated performance and capabilities of the DS99R421 FPD-Link to FPD-Link II Embedded Clock LVDS Converter The DS99R421 Serializer board accepts FPD Link LVDS (3 DAta + 1 Clock) input signals and provides single serialized FPD-LInk II LVDS data pair as an output. The DS90UR124 Deserializer board accepts the FPD-Link II LVDS serialized data stream and converts the data back into parallel LVCMOS signals and clock. USB cable is provided as a generic medium for the high speed data link. Jumpers and switches on the boards can be configured for evaluation of chipset features such as pre-emphasis, Progressive Turn On, etc. Contents: One DS99R421 FPD- Link to FPD-Link II converter board One DS90UR124 Deserializer board One 2-meter high speed USB 2.0 cable (4-pin USB) Evaluation Kit Documentation DS99R421 Datasheet What the user needs to provide: A source of 18 bit RGB bus and clock - for example a video generator LCD panel and interface from deserializer board to the panel itself , or a test equipment Power supply for the both boards

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
DS99R421ISQ/NOPB	93.079	LLP	36	3	260	Detail	Download	N/A	NS UZXYTTE# 99R421I
DS99R421ISQX/NOPB	93.079	LLP	36	3	260	Detail	Download	N/A	NS UZXYTTE# 99R421I
DS99R421QSQ/NOPB	93.079	LLP	36	3	260	Detail	Download	N/A	NS UZXYTTE# 99R421Q
DS99R421QSQX/NOPB	93.079	LLP	36	3	260	Detail	Download	N/A	NS UZXYTTE# 99R421Q

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 DS99R421.

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 DS99R421 is located at RoHS Status.

Design Tools

Title	Size	Date
Evaluation Kit for DS99R421 Serializer

CAD Symbols and Models Download DS99R421 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS99R421ISQ	CMOS7	0	21301	0	0	1584000	3	449464325
DS99R421ISQX	CMOS7	0	21301	0	0	1584000	3	449464325
DS99R421QSQ	CMOS7	0	21301	0	0	1584000	3	449464325
DS99R421QSQX	CMOS7	0	21301	0	0	1584000	3	449464325

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

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 DS99R421.

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 DS99R421 is located at RoHS Status.

DS90UR905/906 FPD-Link II Automotive Display SerDes Loading video...

DS90UR905/906 FPD-Link II Automotive Display SerDes Date: 2009-08-24 Length: 0:29:36