LMH0340_08 Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – 3G, HD, SD, DVB-ASI SDI Serializer and Driver with LVDS Interface

October 20, 2008
LMH0340, LMH0040, LMH0070, LMH0050
3 Gbps, HD, SD, DVB-ASI SDI Serializer and Cable Driver
with LVDS Interface
General Description
The LMH0340/0040/0070/0050 SDI Serializers are part of
National’s family of FPGA-Attach SER/DES products sup-
porting 5-bit LVDS interfaces with FPGAs. An FPGA Host will
format data with supplied IP such that the output of the
LMH0340 is compliant with the requirements of DVB-ASI,
SMPTE 259M-C, SMPTE 292M and SMPTE 424M stan-
dards. See Table 1 for details on which Standards are sup-
ported per device.
The interface between the SER (Serializer) and the FPGA
consists of a 5 bit wide LVDS data bus, an LVDS clock and
an SMBus interface. The LMH0340/0040/0070 SER devices
include an integrated cable driver which is fully compliant with
all of the SMPTE specifications listed above. The LMH0050
has a CML output driver that can drive a differential transmis-
sion line or interface to a cable driver.
The FPGA-Attach SER/DES family is supported by a suite of
IP which allows the design engineer to quickly develop video
applications using the SER/DES products. The SER is pack-
aged in a physically small 48 pin LLP package.
Key Specifications
■ ^{Output compliant with SMPTE 424M, SMPTE 292M,}
SMPTE 259M-C and DVB-ASI (See Table 1)
■ ^{Typical power dissipation: 440 mW}
■ ^{30 ps typical output jitter (HD, 3G)}
Features
■ ^{LVDS Interface to Host FPGA}
■ ^{No external VCO or clock ref required}
■ ^{Integrated Variable Output Cable Driver}
■ ^{3.3V SMBus configuration interface}
■ ^{Integrated TXCLK PLL cleans clock noise}
■ ^{Small 48pin LLP package}
Applications
■ ^{SDI interfaces for:}
— Video Cameras
— DVRs
— Video Switchers
— Video Editing Systems
General Block Diagram
TRI-STATE^® is a registered trademark of National Semiconductor Corporation.
© 2008 National Semiconductor Corporation 300170
30017001
www.national.com