LMH0031 Datasheet, PDF (2/39 Pages) National Semiconductor (TI) – SMPTE 292M/259M Digital Video Deserializer Descrambler with Video and Ancillary Data FIFOs

LMH0031
SNLS218A – JANUARY 2006 – REVISED APRIL 2013
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DESCRIPTION (CONTINUED)
The unique multi-functional I/O port of the LMH0031 provides external access to functions and data stored in the
configuration and control registers. This feature allows the designer greater flexibility in tailoring the LMH0031 to
the desired application. The LMH0031 is auto-configured to a default operating condition at power-on or after a
reset command. Separate power pins for the PLL, deserializer and other functional circuits improve power supply
rejection and noise performance.
The LMH0031 has a unique Built-In Self-Test (BIST) and video Test Pattern Generator (TPG). The BIST enables
comprehensive testing of the device by the user. The BIST uses the TPG as input data and includes SD and HD
component video test patterns, reference black, PLL and EQ pathologicals and a 75% saturation, 8 vertical
colour bar pattern, for all implemented rasters. The colour bar pattern has optional transition coding at changes in
the chroma and luma bar data. The TPG data is output via the parallel data port.
The LMH0030, SMPTE 292M / 259M Digital Video Serializer with Ancillary Data FIFO and Integrated Cable
Driver, is the ideal complement to the LMH0031.
The LMH0031's internal circuitry is powered from +2.5 Volts and the I/O circuitry from a +3.3 Volt supply. Power
dissipation is typically 850mW. The device is packaged in a 64-pin TQFP.
SMPTE Video
Data Input
Parallel Ancilliary
Data Input
TYPICAL APPLICATION
V_DD
LMH0030
SD/HD Encoder/ Serializer/
Cable Driver
75:
1%
1 PF
SMPTE 292M
or 259M
Serial Data
SMPTE Video
Data Output
Parallel Ancilliary
Data Output
LMH0034
Adaptive Cable
Equalizer
1 PF
75:
1%
LMH0031
SD/HD Decoder/
Deserializer
75: Coaxial Cable
2
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