RETIMER / FIFO

VCO / PLL

SDI0

LOCK DETECT

SDO

CONTROL LOGIC

AUTO BYPASS

BYPASS/

O/P MUTE

RATE0

RATE1

50

50

XTAL IN/EXT CLK

XTAL OUT

LOOP FILTER 1

LOOP FILTER 2

SCO_EN

SCO/SDO2

BYPASS

SDI0

SDO

50

50

SD/ HD

SCO/SDO2

SDI1

SDI1

SDI2

SDI2

SDI3

SDI3

SEL0

SEL1

ENABLE

EQUALIZER

EQUALIZER

EQUALIZER

EQUALIZER

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LMH0356

SNLS270L – AUGUST 2007 – REVISED JANUARY 2016

LMH0356 3-Gbps HD/SD SDI Reclocker with 4:1 Input Mux and FR4 EQs

1

1 Features

1

•

Supports SMPTE ST-424, ST-292, and ST-259

Serial Digital Video Standards

•

Supports 270-Mbps, 1.483-Gbps, 1.485-Gbps,

2.967-Gbps, and 2.97-Gbps Serial Data Rate

Operation

•

Supports DVB-ASI at 270 Mbps

•

Single 3.3-V Supply Operation

•

430-mW Typical Power Consumption

•

Integrated 4:1 Multiplexed Input

•

0 to 30-inch FR4 Equalizer on Each Multiplexed

Input

•

Two Differential, Reclocked Outputs

•

Choice of Second Reclocked Output or

Recovered 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

•

Power Saver Mode With Device Power-Down

Control (10-mW Typical Power Consumption in

Disabled State)

•

Differential LVPECL-Compatible Serial Data

Inputs and Outputs

•

LVCMOS Control Inputs and Indicator Outputs

•

48-Pin WQFN or 40-Pin WQFN Package

•

Industrial Temperature Range: –40°C to 85°C

•

48-Pin WQFN Version Footprint-Compatible with

the LMH0056 and LMH0036

2 Applications

•

SDTV/HDTV and 3-Gbps Serial Digital Video

Interfaces for:

–

Digital Video Routers and Switchers

–

Digital Video Processing and Editing

Equipment

–

DVB-ASI Equipment

–

Video Standards and Format Converters

3 Description

The LMH0356 3-Gbps HD/SD SDI Reclocker with 4:1

Input Mux and FR4 EQs retimes serial digital video

data conforming to the SMPTE ST-424, ST-292, and

ST-259 standards. The LMH0356 operates at serial

data rates of 270 Mbps, 1.483 Gbps, 1.485 Gbps,

2.967 Gbps, and 2.97 Gbps. The LMH0356 supports

DVB-ASI operation at 270 Mbps. The LMH0356

includes an integrated 4:1 input multiplexer for

selecting one of four input data streams for retiming.

In addition, the four inputs of the LMH0356 each have

an FR4 equalizer capable of equalizing 0 to 30 inches

of FR4 trace length.

The LMH0356 automatically detects the incoming

data rate and adjusts itself to retime the incoming

data to suppress accumulated jitter. The LMH0356

recovers the serial data-rate clock and optionally

provides it as an output. The LMH0356 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, output mute, and device

enable. The serial data inputs, outputs, and serial

clock outputs are differential LVPECL compatible.

The CML serial data and serial clock outputs are

suitable for driving 100-

Ω differentially terminated

networks. The control logic inputs and outputs are

LVCMOS compatible.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMH0356

WQFN (40)

5.00 mm x 5.00 mm

WQFN (48)

7.00 mm x 7.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Functional Block Diagram