CIRCUIT DESCRIPTION
The GX4314 is a wideband video multiplexer implemented in bipolar technology. This device is characterized by excellent differential phase and gain in the enabled state, very high off-isolation in the disabled state and fully buffered unilateral signal path. Make-before-break switching assures virtually glitch-free switching.
For use in NxM routing matrices, the GX4314 features a very high, nearly constant input impedance coupled with high output impedance in the disabled state. This allows multiple devices to be paralleled at the inputs and outputs without additional circuitry.
Logic inputs are TTL and 5V CMOS compatible, providing address and chip select functions. The operation of the devices is described in the Truth Table below. The wideband GX4314 is pin for pin compatible with the high performance GX414, extending the flat frequency response characteristics from 50 to 100 MHz.

FEATURES
*low differential phase and gain
*wide bandwidth, 100 MHz at -1 dB (Flattened)
*small switching transient
*±4.5 to ± 11 volts supplies

APPLICATIONS
*HDTV
*Very high quality video switching
*Very high density video switching
*Computer graphics
*PCM / data routing

GX4314-CDB, GX4314-CKB  

GX4314 - Wideband, Monolithic 4x1 Video Multiplexer

DEVICE DESCRIPTION
The GS9002 is a monolithic bipolar integrated circuit designed to serialize SMPTE 125M and SMPTE 244M bit parallel digital signals as well as other 8 or 10 bit parallel formats.
This device performs the functions of sync detection, parallel to serial conversion, data scrambling (using the X9 + X4 +1 algorithm), 10x parallel clock multiplication and conversion of NRZ to NRZI serial data.
It supports any of four selectable serial data rates from 100 Mb/s to over 360 Mb/s.
The data rates are set by resistors and are selected by an on-board 2:4 decoder having two TTL level input address lines.
Other features such as a sync detector output, a sync detector disable input, and a lock detect output are also provided.
The X9 + X4 + 1 scrambler and NRZ to NRZI converter may be bypassed to allow the output of the parallel to serial converter to be directly routed to the output drivers.
The GS9002 provides pseudo-ECL outputs for the serial data and serial clock as well as a single-ended pseudo-ECL output of the regenerated parallel clock.
The GS9002 directly interfaces with cable drivers GS9007, GS9008 and GS9009.
The device requires a single +5 volt or -5 volt supply and typically consumes 713 mW of power while driving 100 Ω loads.
The 44 pin PLCC packaging assures a small footprint for the complete encoder function.

FEATURES
*fully compatible with SMPTE-259M serial digital standard
*supports up to four serial bit rates to 400 Mb/s
*accepts 8 bit and 10 bit TTL and CMOS compatible parallel data inputs
*X9 + X4 + 1 scrambler, NRZI converter and sync detector may be disabled for transparent data
transmission
*pseudo-ECL serial data and clock outputs
*single +5 or -5 volt supply
*713 mW typical power dissipation (including ECL pull-down loads).
*44 pin PLCC packaging

APPLICATIONS
*4ƒSC, 4:2:2 and 360 Mb/s serial digital interfaces for Video cameras, VTRs, Signal generators

GS9002 - CPM

 

GS9002-Serial Digital Encoder

Description
The GS9090B is a 270Mb/s reclocking deserializer with an internal FIFO.
It provides a complete receive solution for SD-SDI and DVB-ASI applications.
In addition to reclocking and deserializing the input data stream, the GS9090B performs NRZI-to-NRZ decoding, descrambling as per SMPTE 259M-C, and word alignment when operating in SMPTE mode.
When operating in DVB-ASI mode, the device will word align the data to K28.5 sync characters and 8b/10b decode the received stream.
The internal reclocker features a very wide input jitter tolerance, and is fully compatible with both SMPTE and DVB-ASI input streams.
The GS9090B includes a range of data processing functions such as EDH support (error detection and handling), and automatic standards detection.
The device can also detect and extract SMPTE 352M payload identifier packets and independently identify the received video standard.
 This information is read from internal registers via the host interface port.
The GS9090B also incorporates a video line-based FIFO.
This FIFO may be used in four user-selectable modes to carry out tasks such as data alignment / delay, clock phase interchange, MPEG packet extraction and clock rate interchange, and ancillary data packet extraction.
Parallel data outputs are provided in 10-bit multiplexed format, with the associated parallel clock output signal operating at 27MHz.
The device may also be used in a low-latency data pass through mode where only descrambling and word alignment will be performed in SMPTE mode.

Key Features
* SMPTE 259M-C compliant descrambling and NRZI to NRZ decoding (with bypass)
* DVB-ASI sync word detection and 8b/10b decoding
* Integrated line-based FIFO for data alignment/delay, clock phase interchange, DVB-ASI
data packet extraction and clock rate interchange, and ancillary data packet extraction
* Integrated VCO and reclocker
* Automatic or manual selection between SMPTE video and DVB-ASI data
* User selectable additional processing features including:
* TRS, ANC data checksum, and EDH CRC error detection and correction
* programmable ANC data detection
* illegal code remapping
* Internal flywheel for noise immune H, V, F extraction
* Automatic standards detection and indication
* Enhanced Gennum Serial Peripheral Interface (GSPI)
* JTAG test interface
* Polarity insensitive for DVB-ASI and SMPTE signals
* +1.8V core power supply with optional +1.8V or +3.3V I/O power supply
* Small footprint (8mm x 8mm)
* Low power operation (typically 145mW)
* Pb-free

Applications
* SMPTE 259M-C Serial Digital Interfaces
* DVB-ASI Serial Digital Interfaces

 

GS9090B - 270Mb/s Deserializer for SDI

Description
 The GO1555 is a self contained, miniature Voltage Controlled Oscillator (VCO). It produces a clean 1.485GHz reference clock signal with low spurious noise content. It is designed to drive 50Ω strip lines.
The VCO requires a single 2.5V supply and draws a maximum of 8mA of current. It is packaged in a miniature 8-pin proprietary surface mount package and operates over the temperature range of -40°C to +85°C.
The GO1555 can be used in place of the older GO1525 VCO.
Compared to the GO1525, the GO1555 saves space, consumes less power and achieves better jitter performance.
Note: Optimal performance of the GO1555 is achieved using slightly different loop bandwidth component values than those used with the GO1525.
This component and all homogeneous subcomponents are RoHS compliant.

Features
* Generates 1.485GHz or 1.485/1.001GHz signal for Gennum ICs
* Low power - 20mW less than GO1525
* 50Ω output impedance
* Operates from a single 2.5V supply
* 8 pin tape on reel
* Pb-free and RoHS Compliant

Applications
Other Products:
* GS4915 ClockCleaner™
Deserializers:
* GS1559, GS1560A, GS1561, GS9060
Serializers:
* GS1531, GS1532, GS9062

GO1555-IXTE3

 

GO1555 - Voltage Controlled Oscillator

Description
 The GS1582 is the next generation multi-standard serializer with an integrated cable driver.
The device provides robust parallel to serial conversion, generating a SMPTE 292M/259M-C compliant serial digital output signal.
The integrated cable driver features an output disable (high impedance) mode and an adjustable signal swing.
Data input is accepted in 20-bit parallel format or 10-bit parallel format. An associated parallel clock input must be provided at the appropriate operating frequency; 74.25/74.1758/13.5MHz (20-bit mode) or 148.5/148.352/27MHz (10-bit mode).
The GS1582 features an internal PLL which, if desired, can be configured for a loop bandwidth below 100kHz.
When used in conjunction with the GO1555 Voltage Controlled Oscillator, the GS1582 can tolerate well in excess of 300ps jitter on the input PCLK and still provide output jitter within SMPTE specifications.
In addition to serializing the input, the GS1582 performs NRZ-to-NRZI encoding and scrambling as per SMPTE 292M/259M-C when operating in SMPTE mode.
When operating in DVB-ASI mode, the device will insert K28.5 sync characters and 8b/10b encode the data prior to serialization.
The device also provides a range of other data processing functions.
All processing features are optional and may be enabled/disabled via external control pin(s) and/or host interface programming.
The GS1582 can embed up to 8 channels of audio into the video data stream in accordance with SMPTE 299M and SMPTE 272M.
The audio input signal formats supported by the device include AES/EBU and I2S serial digital formats with a 16, 20 or 24 bit sample size and a 48 kHz sample rate.
Additional audio processing features include individual channel enable, channel swap, group swap, ECC generation and audio channel status insertion.
Typical power consumption, including the GO1555 VCO, is 500mW.
The standby feature allows the power to be reduced to 125mW.
Power may be reduced to less than 10mW by also removing the power to the cable driver and eliminating transitions at the parallel data and clock inputs.
The GS1582 is Pb-free and RoHS compliant.

Key Features
* HD-SDI, SD-SDI, DVB-ASI transmitter with audio embedding
* Integrated SMPTE 292M and 259M-C compliant cable driver
* Integrated ClockCleaner™
* User selectable video processing features, including:
* Generic ancillary data insertion
* Support for HVF or EIA/CEA-861 timing input
* Automatic standard detection and indication
* Enhanced SMPTE 352M payload identifier generation and insertion
* TRS, CRC, ANC data checksum, and line number calculation and insertion
* EDH packet generation and insertion
* Illegal code remapping
* SMPTE 292M and SMPTE 259M-C compliant scrambling and NRZ → NRZI encoding
* Blanking of input HANC and VANC space
* User selectable audio processing features, including:
* SMPTE 299M and SMPTE 272M-A/C compliant audio embedding
* Support for up to 8 channels
* Support for audio group replacement
* JTAG test interface
* 1.8V core and 3.3V charge pump power supply
* 1.8V and 3.3V digital I/O support
* Low power standby mode
* Operating temperature range: -20oC to +85oC
* Pb-free, RoHS compliant, 11mm x 11mm 100-ball BGA package

Applications
* SMPTE 292M and SMPTE 259M-C Serial Digital Interfaces
* DVB-ASI Serial Digital Interfaces

GS1582-IBE3

 

GS1582 - Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner™