SERDES03-40USB/NOPB National Semiconductor, SERDES03-40USB/NOPB Datasheet

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SERDES03-40USB/NOPB

Manufacturer Part Number
SERDES03-40USB/NOPB
Description
KIT EVALUATION FOR DS99R103/104
Manufacturer
National Semiconductor

Specifications of SERDES03-40USB/NOPB

Main Purpose
Interface, Serializer, Deserializer (SERDES)
Utilized Ic / Part
DS99R103, DS99R104
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Other names
SERDES03-40USB
© 2009 National Semiconductor Corporation
FPD-Link II Display
SerDes Overview
Introduction
National’s FPD-Link II family of embedded clock LVDS
SerDes provide enhanced features, and improved signal
quality over prior generations of FPD-Link SerDes devices for
Display applications. FPD-Link Chipsets serialized the wide
parallel RGB buses down to 4 or 5 pairs of LVDS signaling
depending upon the chipset. 18-bit RGB was serialized to
three LVDS data lines and a LVDS clock, while 24-bit RGB
was serialized to four LVDS data lines and a LVDS clock. This
provided a smaller, higher speed video bus and has become
the defacto standard for Notebook Display interfaces.
The single serial differential signal carries the parallel data
(RGB and control) information, clock information and a small
amount of serial overhead. Routing of the single signal pair
FIGURE 1. General Block Diagram – FPD-Link II 18-bit RGB Display Application
300558
National Semiconductor
Application Note 1807
John Goldie
November 4, 2009
The FPD-Link II SerDes family serializes the wide parallel
display bus all the way to a single serial differential signal as
shown in
or even greater (if ground wires are taken into account) are
obtained. Current devices in the family support common 18-
bit and 24-bit RGB Display applications. With the single serial
signal, skew problems between multiple lines (lanes) are re-
moved and cable lengths up to 10 meters are supported. This
makes the FPD-Link II SerDes ideal for long reach applica-
tions with low cost small cables.
greatly eases system design, saves bulk interconnect, saves
connector pins, and reduces concern over interface intercon-
nect skew.
Figure 1
below. Signal compression ratios of 24:1
www.national.com
30055801

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SERDES03-40USB/NOPB Summary of contents

Page 1

... FIGURE 1. General Block Diagram – FPD-Link II 18-bit RGB Display Application The single serial differential signal carries the parallel data (RGB and control) information, clock information and a small amount of serial overhead. Routing of the single signal pair © 2009 National Semiconductor Corporation National Semiconductor Application Note 1807 John Goldie ...

Page 2

An example of the 24-bit (user) payload is shown in 2. The 24-bit data field is appended with four additional serial bits which provide the embedded clock information, link cod- ing, and operating mode information. A fixed clock edge is ...

Page 3

FIGURE 3. 24-bit RGB FPD-Link II SERDES XGA Display Application In this example, if the PCLK was at 43MHz, the serial trans- mission rate is 28 times the PCLK, or 1.2 Gbps. The user data rate is 24X of PCLK, ...

Page 4

NSID (root) Function DS90UR906Q DES DS90UR907Q SER DS90UR908Q DES Check website for latest product introductions. www.national.com Color Depth General (bits per pixel) Purpose I/O 24-bit N/A 24-bit N/A 24-bit N/A 4 Parallel Interface PCLK (MHz) LVCMOS FPD-Link ...

Page 5

Summary The FPD-Link II SerDes devices provide an embedded clock single serial stream for Display, Imaging, Pixel based, and other applications. The serial interface greatly eases inter- connect design in terms of space, pins, skew and cost. The FPD-Link II ...

Page 6

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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