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Home > Products > Integrated Circuits (ICs) > Linear > Video Processing

Semtech Corporation GS1532-CFE3

Name: GS1532-CFE3
Brand: Semtech Corporation
SKU: GS1532-CFE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GS1532-CFE3

Manufacturer:: Semtech Corporation

Category:: Video Processing

Package:: 80-LQFP

Datasheet:: GS1532-CFE3.pdf

Description:: IC VIDEO SERIALIZER 80LQFP

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Product details

Overview

GS1532-CFE3 from Gennum is a multi-rate HD/SD-SDI and DVB-ASI serializer with integrated ClockCleaner™ reclocking, SMPTE 292M/259M-C compliance, 1.485 Gb/s / 270 Mb/s serial output, 20-bit/10-bit parallel input, and internal PLL supporting ≤300 ps input jitter tolerance - used in broadcast video transmission systems requiring standards-compliant serial digital interface generation.

For engineers reviewing the GS1532-CFE3 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs (1.8V core, 3.3V I/O), real-time TRS/EDH packet insertion capability, SMPTE/DVB mode selection logic, and confirmed RoHS/Pb-free status per Gennum's February 2007 datasheet revision 21498-8.

Technical Context

The GS1532-CFE3 integrates a configurable PLL with loop bandwidth adjustable down to 100 kHz via LB_CONT pin, enabling robust jitter cleanup on PCLK inputs with >300 ps jitter while maintaining SMPTE-spec output jitter (<125 ps intrinsic). It supports three operational modes - SMPTE (with scrambling/NRZI encoding), DVB-ASI (with K28.5 sync word insertion and 8b/10b encoding), and Data-Through - each with distinct parallel clock requirements (148.5/74.25/27/13.5 MHz) and data bus configurations (20-bit demux or 10-bit mux).

Its dual-slew-rate cable driver automatically adapts to HD/SD rates, delivering 800 mV_p-p into 75 Ω with rise/fall times of 200–260 ps (HD) or 400–1500 ps (SD). All I/O processing features - including TRS generation with internal flywheel, line-number/CRC/ANC checksum insertion, and illegal code remapping - are enabled/disabled via dedicated control pins (IOPROC_EN/DIS, DETECT_TRS, H/V/F) or host interface registers.

Key Specifications

Parameter	Value and Actual Design Meaning
Serial Output Rates	1.485 Gb/s, 1.485/1.001 Gb/s, or 270 Mb/s - matches SMPTE 292M HD-SDI, SMPTE 259M-C SD-SDI, and DVB-ASI physical layer requirements.
Parallel Input Bus	20-bit demultiplexed or 10-bit multiplexed CMOS - supports both HD (74.25/148.5 MHz PCLK) and SD (13.5/27 MHz PCLK) video data formats.
Input Jitter Tolerance	≥300 ps on PCLK - achieved via narrow-loop PLL (100 kHz min bandwidth), enabling use with low-stability clocks like those from Gennum GS4911.
Output Swing & Load	800 mV_p-p into 75 Ω - meets SMPTE 292M/259M amplitude specifications with RSET = 281 Ω.
Power Supplies	1.8 V core (CORE_VDD), 3.3 V I/O (IO_VDD), 1.8 V cable driver (CD_VDD), 3.3 V charge pump (CP_VDD) - requires separate analog/digital ground partitioning.
Standards Compliance	SMPTE 292M, SMPTE 259M-C, DVB-ASI - includes mandatory scrambling, NRZI encoding, 8b/10b, and K28.5 sync insertion per standard.
Package	80-pin LQFP (12 × 12 mm, 0.5 mm pitch) - footprint-compatible with GS1560A, GS1561, GS9060, GS9062.

Pinout & Package

GS1532-CFE3 is housed in an 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Gennum datasheet revision 21498-8, pages 5–13. Power domains (CORE_GND/VDD, IO_GND/VDD, CP_VDD, CD_VDD) are physically segregated to minimize noise coupling between digital core, I/O buffers, PLL charge pump, and cable driver sections.

Pin/Terminal	Circuit Role	Design Meaning
DIN[0:19]	Parallel video/data input bus	20-bit demux (HD) or 10-bit mux (SD) LVCMOS/LVTTL inputs - DIN0–DIN9 and DIN10–DIN19 mapped separately for luma/chroma separation in SMPTE mode.
PCLK	Parallel clock input	Accepts 13.5/27/74.25/148.5 MHz LVCMOS clock - timing reference for all parallel data sampling and internal reclocking.
SDO, SDO	Differential serial output	Single-ended 75 Ω outputs (not true differential) - slew rate auto-selected for HD (200–260 ps) or SD (400–1500 ps) compliance.
IOPROC_EN/DIS	Processing enable control	Hardware-level master enable for TRS, EDH, CRC, line number, ANC checksum, and illegal code remap - overrides register settings when LOW.
DETECT_TRS	Flywheel timing source select	When HIGH, locks internal flywheel to embedded TRS in incoming data; when LOW, uses external H/V/F timing signals for TRS generation.
RSET	Output swing calibration	Analog input setting output amplitude - 281 Ω to CD_VDD yields 800 mV_p-p into 75 Ω load.
LB_CONT	PLL loop bandwidth control	Analog voltage (via 15 kΩ to VCO_VDD) sets PLL bandwidth from 100 kHz to >1 MHz - critical for jitter attenuation vs. lock time trade-off.

Key Features

Feature	Design Value
Integrated ClockCleaner™ reclocking	Configurable PLL with 100 kHz–1 MHz loop bandwidth tolerates ≥300 ps PCLK jitter while delivering <125 ps intrinsic output jitter at 1.485 Gb/s.
SMPTE/DVB protocol engine	Hardware-accelerated scrambling + NRZ→NRZI (SMPTE) or 8b/10b + K28.5 sync (DVB-ASI) - no host CPU overhead required.
TRS generation with internal flywheel	Generates SMPTE 292M TRS words using either embedded TRS detection (DETECT_TRS=HIGH) or external H/V/F timing (DETECT_TRS=LOW).
Programmable I/O processing	On-the-fly insertion of EDH packets, SMPTE 352M payload ID, line numbers, CRC, ANC checksums, and illegal code remapping - all pin- or register-controllable.
Auto-adaptive cable driver	Dual-slew-rate output automatically switches between HD (fast) and SD (slow) modes based on SD/HD pin state - ensures SMPTE 292M/259M waveform compliance.

Applications

Broadcast HD-SDI Transmitter	Professional SD-SDI Distribution
Use Scenario: Embedding TRS, EDH, and SMPTE 352M packets into uncompressed 1080i/720p video streams before transmission over coaxial cable. IC Role / Device Role / Timing Role: Serializer with ClockCleaner™ reclocking and real-time packet insertion - converts parallel 20-bit HD video + timing signals (H/V/F) into SMPTE 292M-compliant serial stream. Use Value: Eliminates need for external TRS generator and jitter cleaner; maintains <125 ps output jitter even with noisy PCLK sources.	Use Scenario: Converting studio-grade 480i/576i component video to SMPTE 259M-C serial format for routing over legacy SD infrastructure. IC Role / Device Role / Timing Role: Multi-rate serializer operating in SD mode (SD/HD=HIGH, PCLK=27 MHz) with optional line-number and CRC insertion. Use Value: Single-chip solution replaces discrete logic + FPGA-based packet engines; supports automatic standards detection and blanking control.
DVB-ASI Digital Video Interface	Video Test & Measurement Equipment
Use Scenario: Generating compliant DVB-ASI bitstreams from MPEG-TS data for satellite/cable headend equipment. IC Role / Device Role / Timing Role: DVB-ASI serializer with K28.5 sync word insertion and 8b/10b encoding - accepts 10-bit multiplexed TS data at 27 MHz. Use Value: Meets ETSI EN 300 429 physical layer spec without external encoder; supports pin-controlled bypass of processing features.	Use Scenario: Reference design in video signal analyzers and waveform monitors requiring precise, jitter-clean serial output for calibration. IC Role / Device Role / Timing Role: Reclocking and serialization engine with LOCKED status output and JTAG boundary scan - enables deterministic latency measurement and fault isolation. Use Value: LOCKED pin confirms SMPTE/DVB lock state in real time; JTAG/HOST pin allows in-system configuration and diagnostics without firmware dependency.

Broadcast HD-SDI Transmitter

Professional SD-SDI Distribution

Use Scenario: Embedding TRS, EDH, and SMPTE 352M packets into uncompressed 1080i/720p video streams before transmission over coaxial cable.

IC Role / Device Role / Timing Role: Serializer with ClockCleaner™ reclocking and real-time packet insertion - converts parallel 20-bit HD video + timing signals (H/V/F) into SMPTE 292M-compliant serial stream.

Use Value: Eliminates need for external TRS generator and jitter cleaner; maintains <125 ps output jitter even with noisy PCLK sources.

Use Scenario: Converting studio-grade 480i/576i component video to SMPTE 259M-C serial format for routing over legacy SD infrastructure.

IC Role / Device Role / Timing Role: Multi-rate serializer operating in SD mode (SD/HD=HIGH, PCLK=27 MHz) with optional line-number and CRC insertion.

Use Value: Single-chip solution replaces discrete logic + FPGA-based packet engines; supports automatic standards detection and blanking control.

DVB-ASI Digital Video Interface

Video Test & Measurement Equipment

Use Scenario: Generating compliant DVB-ASI bitstreams from MPEG-TS data for satellite/cable headend equipment.

IC Role / Device Role / Timing Role: DVB-ASI serializer with K28.5 sync word insertion and 8b/10b encoding - accepts 10-bit multiplexed TS data at 27 MHz.

Use Value: Meets ETSI EN 300 429 physical layer spec without external encoder; supports pin-controlled bypass of processing features.

Use Scenario: Reference design in video signal analyzers and waveform monitors requiring precise, jitter-clean serial output for calibration.

IC Role / Device Role / Timing Role: Reclocking and serialization engine with LOCKED status output and JTAG boundary scan - enables deterministic latency measurement and fault isolation.

Use Value: LOCKED pin confirms SMPTE/DVB lock state in real time; JTAG/HOST pin allows in-system configuration and diagnostics without firmware dependency.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-standard video serializer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
GS1561-CFE3	Same 80-pin LQFP package and pinout; lacks integrated ClockCleaner™ PLL - requires external VCO and loop filter components.	Used where system-level jitter cleanup is handled externally or not required; lower BOM cost but higher layout complexity.	Select GS1561-CFE3 only if external reclocking architecture is already in place and ClockCleaner™ integration is unnecessary.
GS9062-CFE3	Pin-compatible successor with enhanced DVB-ASI support, extended temperature range (–40°C to +85°C), and improved power efficiency (220 mA @ 1.8 V vs. 245 mA).	Preferred for new designs targeting industrial or extended-temperature broadcast environments; retains full GS1532-CFE3 feature set.	GS9062-CFE3 is recommended for new designs per Gennum's migration guidance; GS1532-CFE3 remains valid for legacy repair or cost-sensitive volume production.

Compared with GS1561-CFE3, GS1532-CFE3 integrates full ClockCleaner™ reclocking and eliminates external VCO dependencies, reducing board area and design risk. Compared with GS9062-CFE3, GS1532-CFE3 lacks extended temperature rating and consumes slightly more core current, making it suitable for commercial-grade broadcast gear where cost and footprint are prioritized over environmental ruggedness.

Availability

GS1532-CFE3 is available at Aetrix Electronics and suitable for broadcast video transmitters, SD/HD-SDI distribution systems, and DVB-ASI headend equipment requiring stable component supply across long-lifecycle OEM programs.

Supply support for GS1532-CFE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Gennum Corporation was a fabless semiconductor company specializing in high-speed analog and mixed-signal ICs for professional video, broadcast, and communications infrastructure until its acquisition by Semtech in 2012.

The GS1532-CFE3 belongs to Gennum's HD-LINX® II family of serial digital interface ICs, designed specifically for standards-compliant, low-jitter video serialization in broadcast-grade equipment where SMPTE 292M/259M-C and DVB-ASI interoperability is mandatory.

FAQ

What video standards does the GS1532-CFE3 support?

The GS1532-CFE3 supports SMPTE 292M (HD-SDI), SMPTE 259M-C (SD-SDI), and DVB-ASI standards. In SMPTE mode, it performs scrambling and NRZ-to-NRZI encoding; in DVB-ASI mode, it inserts K28.5 sync words and applies 8b/10b encoding. The GS1532-CFE3 also supports Data-Through mode for transparent serialization without protocol processing.

Does the GS1532-CFE3 require an external VCO?

Yes, the GS1532-CFE3 requires an external VCO such as the GO1555 (recommended for new designs) or GO1525. The device provides VCO_VCC, VCO_GND, LF, and CP_CAP pins to interface with the external oscillator. The GS1532-CFE3's internal PLL uses this reference to generate the precise serial output clock needed for SMPTE or DVB-ASI compliance.

How is output amplitude controlled on the GS1532-CFE3?

Output amplitude on the GS1532-CFE3 is set via the RSET pin, which connects to CD_VDD through a 281 Ω ±1% resistor to achieve 800 mV_p-p into a 75 Ω load. This analog trimming method ensures consistent output swing across process, voltage, and temperature variations - a requirement for SMPTE 292M/259M-C waveform fidelity.

Can the GS1532-CFE3 operate without host processor control?

Yes, the GS1532-CFE3 supports full pin-strapped operation. Control pins including DVB_ASI, SD/HD, 20bit/10bit, IOPROC_EN/DIS, SMPTE_BYPASS, and DETECT_TRS allow complete configuration without host interface access. The GS1532-CFE3 can be deployed in standalone mode for fixed-function video serialization tasks.

What is the purpose of the LOCKED pin on the GS1532-CFE3?

The LOCKED pin on the GS1532-CFE3 is a status output that goes HIGH when the device achieves and maintains lock to SMPTE-compliant data (in SMPTE mode), DVB-ASI-compliant data (in DVB-ASI mode), or stable clock/data alignment (in Data-Through mode). It provides real-time hardware confirmation of serial output readiness - essential for system-level synchronization and fault detection in broadcast systems using the GS1532-CFE3.

GS1532-CFE3 Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: HD-LINX® II

Package/Case:: 80-LQFP

Packaging:: Tray

Product Status:: Obsolete

Function:: Serializer

Applications:: Professional Video

Standards:: SMPTE

Control Interface:: GSPI

Voltage - Supply:: 1.65V ~ 1.95V

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 80-LQFP (14x14)

GS1532-CFE3 FAQ

1.How can I place an order for GS1532-CFE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for GS1532-CFE3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for GS1532-CFE3 reliable?

The price and inventory of GS1532-CFE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS1532-CFE3 is usually 5 days.

3.What payment methods are accepted for GS1532-CFE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS1532-CFE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GS1532-CFE3?

GS1532-CFE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GS1532-CFE3 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for GS1532-CFE3?

For technical support, including GS1532-CFE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS1532-CFE3 requirements.

6.How does Aetrix verify that GS1532-CFE3 is sourced from the original manufacturer or authorized distributors?

All GS1532-CFE3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that GS1532-CFE3 meets industry standards.

7.What is the process for return or replacement of GS1532-CFE3?

All GS1532-CFE3 units undergo pre-shipment inspection (PSI). If there is an issue with GS1532-CFE3, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The GS1532-CFE3 part is unused and in its original packaging.

Return procedure for GS1532-CFE3:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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