DS90UB903Q Datasheet, PDF (1/41 Pages) Texas Instruments – 10 - 43MHz 18 Bit Color FPD-Link III Serializer and Deserializer with Bidirectional Control Channel

DS90UB903Q/DS90UB904Q
April 25, 2012
10 - 43MHz 18 Bit Color FPD-Link III Serializer and
Deserializer with Bidirectional Control Channel
General Description
The DS90UB903Q/DS90UB904Q chipset offers a FPD-Link
III interface with a high-speed forward channel and a bidirec-
tional control channel for data transmission over a single
differential pair. The DS90UB903Q/904Q incorporates differ-
ential signaling on both the high-speed forward channel and
bidirectional control channel data paths. The Serializer/ De-
serializer 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 con-
verts 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 I²C port.
Using TI’s embedded clock technology allows transparent
full-duplex communication over a single differential pair, car-
rying asymmetrical bidirectional control channel information
in both directions. This single serial stream simplifies trans-
ferring a wide data bus over PCB traces and cable by elimi-
nating 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 con-
nector size and pins.
In addition, the Deserializer inputs provide equalization con-
trol to compensate for loss from the media over longer dis-
tances. Internal DC balanced encoding/decoding is used to
support AC-Coupled interconnects.
The Serializer is offered in a 40-pin lead in LLP and Deseri-
alizer is offered in a 48-pin LLP packages.
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 I2C support}
■ ^{Embedded clock with DC Balanced coding to support AC-}
coupled interconnects
■ ^{Capable to drive up to 10 meters shielded twisted-pair}
■ ^{I2C 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
Applications
■ ^{Automotive Display Systems}
— Central Information Displays
— Navigation Displays
— Rear Seat Entertainment
— Touch Screen Displays
Typical Application Diagram
FIGURE 1. Typical Application Circuit
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