LMH0056SQ/NOPB National Semiconductor, LMH0056SQ/NOPB Datasheet

IC RECLOCKER HD/SD SDI 48-LLP

LMH0056SQ/NOPB

Manufacturer Part Number
LMH0056SQ/NOPB
Description
IC RECLOCKER HD/SD SDI 48-LLP
Manufacturer
National Semiconductor
Type
Reclockerr
Datasheet

Specifications of LMH0056SQ/NOPB

Applications
SDTV/HDTV
Mounting Type
Surface Mount
Package / Case
48-LLP
For Use With
SD056EVK - BOARD EVALUATION LMH0056
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMH0056SQ
LMH0056SQTR
© 2007 National Semiconductor Corporation
LMH0056
HD/SD SDI Reclocker with 4:1 Input Multiplexer
General Description
The LMH0056 HD/SD SDI Reclocker with 4:1 Input Multi-
plexer retimes serial digital video data conforming to the
SMPTE 292M and SMPTE 259M (A & C) standards. The
LMH0056 operates at serial data rates of 143 Mbps, 270
Mbps, 1.483 Gbps and 1.485 Gbps. The LMH0056 supports
DVB-ASI operation at 270 Mbps. The LMH0056 includes an
integrated 4:1 input multiplexer for selecting one of four input
data streams for retiming.
The LMH0056 automatically detects the incoming data rate
and adjusts itself to retime the incoming data to suppress ac-
cumulated jitter. The LMH0056 recovers the serial data-rate
clock and optionally provides it as an output. The LMH0056
has two differential serial data outputs; the second output may
be selected as a low-jitter, data-rate clock output. Controls
and indicators are: serial clock or second serial data output
select, manual rate select input, SD/HD rate indicator output,
lock detect output, auto/manual data bypass and output mute.
The serial data inputs, outputs, and serial data-rate clock out-
puts are differential LVPECL compatible. The CML serial data
and serial data-rate clock outputs are suitable for driving
100Ω differentially terminated networks. The control logic in-
puts and outputs are LVCMOS compatible.
The LMH0056 is powered from a single 3.3V supply. Power
dissipation is typically 360 mW. The device is housed in a 48-
pin LLP package.
Typical Application
202019
Features
Applications
Supports SMPTE 292M and SMPTE 259M (A & C) serial
digital video standards
Supports 143 Mbps, 270 Mbps, 1.483 Gbps, and 1.485
Gbps serial data rate operation
Supports DVB-ASI at 270 Mbps
Single 3.3V supply operation
360 mW typical power consumption
Integrated 4:1 multiplexed input
Two differential, reclocked outputs
Choice of second reclocked output or low-jitter,
differential, data-rate clock output
Single 27 MHz external crystal or reference clock input
Manual rate select input
SD/HD operating rate indicator output
Lock Detect indicator output
Output mute function for data and clock
Auto/Manual reclocker bypass
Differential LVPECL compatible serial data inputs and
outputs
LVCMOS control inputs and indicator outputs
48-Pin LLP package
Industrial temperature range: -40°C to +85°C
SDTV/HDTV serial digital video interfaces for:
— Digital video routers and switchers
— Digital video processing and editing equipment
— DVB-ASI equipment
— Video standards and format converters
20201901
www.national.com
April 2007

Related parts for LMH0056SQ/NOPB

LMH0056SQ/NOPB Summary of contents

Page 1

... LVCMOS compatible. The LMH0056 is powered from a single 3.3V supply. Power dissipation is typically 360 mW. The device is housed in a 48- pin LLP package. Typical Application © 2007 National Semiconductor Corporation Features ■ Supports SMPTE 292M and SMPTE 259M (A & C) serial digital video standards ■ ...

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Block Diagram www.national.com 2 20201903 ...

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Connection Diagram The exposed die attach pad is the primary negative electrical terminal for this device. It must be connected to the negative power supply voltage. 48-Pin LLP Order Number LMH0056SQ See NS Package Number SQA48A 3 20201902 www.national.com ...

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Pin Descriptions Pin Name 1 SDI0 2 SDI0 SDI1 5 SDI1 SDI2 8 SDI2 SDI3 11 SDI3 BYPASS/AUTO ...

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Pin Name 48 SEL1 V DAP EE Description Data Input select input Connect exposed DAP to negative power supply (ground) 5 www.national.com ...

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Absolute Maximum Ratings It is anticipated that this device will not be offered in a military qualified version. If Military/Aerospace specified devices are required, please contact the National Semicon- ductor Sales Office/Distributors for availability and specifica- tions. Supply Voltage (V ...

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AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Note 3) Symbol Parameter BR Serial Data Rate SMPTE 259M Serial Data Rate SMPTE 259M Serial Data Rate SMPTE 292M SD ...

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Note 1: “Absolute Maximum Ratings” are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of these maximums shall not be construed to imply that the device can or should be ...

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Device Description The LMH0056 HD/SD SDI Reclocker with 4:1 Input Multi- plexer is used in many types of digital video signal processing equipment. Supported serial digital video standards are SMPTE 259M (A & C) and SMPTE 292M. Corresponding se- rial ...

Page 10

FIGURE 2. Equivalent SDO Output Circuit (SDO, SDO, SCO/SDO2, SCO/SDO2) OPERATING SERIAL DATA RATES This device operates at serial data rates of 143 Mbps, 270 Mbps, 1483 Mbps and 1485 Mbps. The device does not lock to harmonics of these ...

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SERIAL DATA INPUT SELECTOR The Serial Data Input Selector (SEL [1:0]) allows the user to select the active input channel. Table 2 shows the input se- lected for a given state of SEL [1:0]. TABLE 2. Data Input Select Codes ...

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SD/HD The SD/HD output indicates whether the LMH0056 is pro- cessing data rates. It may be used to control another device such as the LMH0002 cable driver. When this output is high it indicates that the data ...

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SCO_EN Input SCO_EN enables the SCO/SDO2 differential output to function either as a serial data-rate clock or second serial data output. SCO/SDO2 functions as a serial data-rate clock when SCO_EN is high. This pin has an internal pull-down device. The ...

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Application Information Figure 4 shows an application circuit for the LMH0056. www.national.com FIGURE 4. Application Circuit 14 20201904 ...

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Physical Dimensions inches (millimeters) unless otherwise noted 48-Pin LLP Order Number LMH0056SQ NS Package Number SQA48A 15 www.national.com ...

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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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