Robustly bridging digital display
standards
Key benefits
Ñ
Bridges different display standards
Ñ
Proven solution and reference design
Ñ
Interoperable with Intel, AMD/ATI and nVidia chipsets
supporting multi-standard display standards
Ñ
A complete level shifter and ESD solution
Key features
Ñ
Level shift from DisplayPort electrical level to DVI /
HDMI 3.3 V level
Ñ
Protection against ESD pulses in accordance with
IEC 61000-4-2 level 4
Ñ
Automatic low-power mode based on hot plug detect
Ñ
Optional output slew-rate control on TMDS outputs to
minimize EMI
Ñ
Optional HDMI dongle detection over I2C bus
(per VESA DisplayPort Interoperability Specification)
Ñ
Multiplexers support multi-mode chipset I/Os
Ñ
Long cable drive as an option
The VESA-approved digital display interface, DisplayPort, is a state-of-the-art digital audio /
video interconnect intended to be used primarily between a computer and its display monitor or
a home-theater system. NXP’s simple interfacing solution with embedded ESD protection allows
you to connect a multi-standard source using a DisplayPort connector directly to a DVI or
HDMI interface.
Key applications
Ñ
Desktop computers
Ñ
Notebooks computers
Ñ
Graphics cards
Ñ
Dongles, adapters
Ñ
Docking stations
Our DisplayPort-to-DVI / HDMI system solution bridges
the worlds between different display standards, connecting
DisplayPort devices to DVI / HDMI displays. As well as
integrated level shifting, this simple dongle design embeds
full ESD protection according to IEC 61000-4-2 level 4
(8 kV contact).
The solution supports the new high-speed graphics chipsets
from Intel, AMD/ATI, nVidia and others. It provides
electrical-level translation from PCIe and DisplayPort signals
to the current-mode outputs required to drive DVI and
HDMI displays.
NXP DisplayPort-to-DVI /
HDMI system solution
www.nxp.com
© 2007 NXP B.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and
reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use.
Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Date of release: December 2007
Document order number: 9397 750 16211
Printed in the Netherlands
When a graphics chipset is configured to DVI or HDMI,
it outputs TMDS-coded signals, while the chipset I/O pins
employ AC-coupled PCI express or DisplayPort electrical
levels. Electrical-level translation is necessary because DVI and
HDMI use DC-coupled 3.3 V differential signaling.
Key components
Ñ
Level shifters – PTN3300, PTN3301
Ñ
Display multiplexers – CBTL06121, CBTL06122, CBTL06141
Ñ
ESD protection – IP4220, IP4280, IP4790
brb101
DISPLAY
MULTIPLEXER
HDMI or DVI
connector
DisplayPort
connector
DisplayPort
connector
ESD
PROTECTION
ESD
PROTECTION
ESD
PROTECTION
LEVEL
SHIFTER
Reference design block diagram
