Texas Instruments DS90UH927Q Manual

5MHz - 85MHz 24-bit Color FPD-Link III Serializer with HDCP
General Description
The DS90UH927Q serializer, in conjunction with a
DS90UH928Q or DS90UH926Q deserializer, provides a so-
lution for secure distribution of content-protected digital video
within automotive entertainment systems. This chipset trans-
lates a FPD-Link video interface into a single-pair high-speed
serialized interface. The digital video data is protected using
the industry standard High-Bandwidth Digital Content Protec-
tion (HDCP) copy protection scheme. The FPD-Link III serial
bus scheme supports full duplex, high speed forward channel
data transmission and low-speed back channel communica-
tion over a single differential link. Consolidation of audio,
video, and control data over a single differential pair reduces
the interconnect size and weight, while also eliminating skew
issues and simplifying system design.
The DS90UH927Q serializer embeds the clock, content pro-
tects the data payload, and level shifts the signals to high-
speed differential signaling. Up to 24 RGB data bits are
serialized along with three video control signals, and up to four
I2S data inputs.
The FPD-Link data interface allows for easy interfacing with
data sources while also minimizing EMI and bus width. EMI
on the high-speed FPD-Link III bus is minimized using low
voltage differential signaling, data scrambling and random-
ization, and dc-balancing.
The HDCP cipher engine is implemented in both the serializer
and deserializer. HDCP keys are stored in on-chip memory.
Applications Diagram
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
PRODUCTION DATA information is current as of
publication date. Products conform to specifications per
the terms of the Texas Instruments standard warranty.
Production processing does not necessarily include
testing of all parameters.
Features
●
Integrated HDCP cipher engine with on-chip key storage
●
Bidirectional control channel interface with I2C compatible
serial control bus
●
Low EMI FPD-Link video input
●
Supports high definition (720p) digital video format
●
5MHz – 85MHz PCLK supported
●
RGB888 + VS, HS, DE and I2S audio supported
●
Up to 4 I2S Digital Audio inputs for surround sound
applications
●
4 Bidirectional GPIO channels with 2 dedicated pins
●
Single 3.3V supply with 1.8V or 3.3V compatible LVCMOS
I/O interface
●
AC-coupled STP Interconnect up to 10 meters
●
DC-balanced & scrambled Data with Embedded Clock
●
Supports HDCP repeater application
●
Internal pattern generation
●
Low power modes minimize power dissipation
●
Automotive grade product: AEC-Q100 Grade 2 qualified
●
>8kV HBM and ISO 10605 ESD rating
●
Backward compatible modes
Applications
●
Automotive Display for Navigation
●
Rear Seat Entertainment Systems
301930 SNLS433A Copyright © 1999-2012, Texas Instruments Incorporated
DS90UH927Q
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