GS1582_09 Datasheet, PDF (1/115 Pages) Gennum Corporation – Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner

GS1582 Multi-Rate Serializer with Cable Driver, Audio Multiplexer and
ClockCleaner^TM
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:
Š Generic ancillary data insertion
Š Support for HVF or EIA/CEA-861 timing input
Š Automatic standard detection and indication
Š Enhanced SMPTE 352M payload identifier
generation and insertion
Š TRS, CRC, ANC data checksum, and line number
calculation and insertion
Š EDH packet generation and insertion
Š Illegal code remapping
Š SMPTE 292M and SMPTE 259M-C compliant
scrambling and NRZ → NRZI encoding
Š Blanking of input HANC and VANC space
• User selectable audio processing features, including:
Š SMPTE 299M and SMPTE 272M-A/C compliant
audio embedding
Š Support for up to 8 channels
Š 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: -20^oC to +85^oC
• 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
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
GS1582 Multi-Rate Serializer with Cable Driver, Audio Multiplexer and ClockCleaner^TM
www.gennum.com
Data Sheet
40117 - 3
March 2009
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