ADAS Camera Network Solution

Application

Description

Comprehensive camera network solution utilizing Jisemi's SerDes and automotive Ethernet PHYs for high-resolution camera connectivity in ADAS systems.

Core Advantages

High-performance SerDes enabling 4K video transmission over cost-effective coaxial cable
Integrated power-over-coax simplifies camera module design and reduces wiring
AEC-Q100 Grade 1 qualification ensures reliable operation in harsh automotive environments
ASIL-B functional safety support meets requirements for safety-critical ADAS applications
Comprehensive diagnostic capabilities enable remote monitoring and predictive maintenance

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 JL2001 2Gbps Camera SerDes Pair 8 📄 Download
2 JL5001 1000BASE-T1 Automotive Ethernet PHY 4 📄 Download
3 JL4001 4Gbps High-Resolution SerDes Pair 2 📄 Download

Applications

Surround-view camera systems
Front camera for ADAS
Rear-view cameras
Driver monitoring systems
Mirror replacement cameras
Autonomous driving sensor arrays

Technical Specifications

Camera Count
Up to 8 cameras
Video Resolution
Up to 4K per camera
Video Latency
<1ms end-to-end
Cable Type
Coaxial or STP
Cable Reach
Up to 15m
Power Delivery
Power-over-coax supported
Operating Temperature
-40°C to +125°C
Safety Level
ASIL-B capable

Customer Success Stories

Leading automotive Tier 1 supplier

Automotive |

Challenge

Needed reliable high-resolution camera connectivity for surround-view system with 8 cameras, requiring low latency and power-over-coax capability.

Solution

Implemented Jisemi-based camera network with JL2001 SerDes for video transmission and JL5001 Ethernet PHYs for camera configuration. Power-over-coax eliminated separate power wiring.

Results

  • Successfully transmitted 8x 1080p video streams simultaneously
  • Achieved <1ms latency meeting real-time requirements
  • Reduced wiring harness weight by 30%
  • Passed AEC-Q100 qualification and EMC testing
  • System achieved ASIL-B safety rating

Electric vehicle startup

Automotive |

Challenge

Developing autonomous driving platform requiring 12 high-resolution cameras with reliable connectivity and functional safety.

Solution

Designed scalable camera network using JL4001 SerDes for front cameras and JL2001 for surround cameras, with JL5001 Ethernet for network backbone.

Results

  • Successfully integrated 12-camera system
  • 4K video transmission from front cameras
  • Passed full automotive qualification
  • Achieved ASIL-B functional safety
  • Met aggressive cost targets

FAE Expert Insights

S

Senior FAE

Applications Engineer

10+ years

Professional Insights

Based on extensive field experience with ADAS camera systems, successful implementation requires careful attention to cable quality, grounding, and signal integrity. The Jisemi SerDes devices provide excellent performance margin, but proper PCB layout and cable selection are critical. I always recommend using quality coaxial cable with proper shielding termination. For power-over-coax applications, verify voltage drop calculations under maximum load conditions. The diagnostic features in Jisemi devices are invaluable for production testing and field troubleshooting - use them to verify cable integrity and identify connectivity issues early. Thermal management is often overlooked but critical for long-term reliability, especially in high-density camera modules.

Key Takeaways

  • Cable quality directly impacts video performance and reliability
  • Proper grounding and shielding are essential for EMC compliance
  • Use diagnostic features for production testing and troubleshooting
  • Verify thermal design under worst-case operating conditions

Decision Framework

Steps:
  1. Define camera resolution and count requirements
  2. Select appropriate SerDes based on bandwidth
  3. Design power delivery architecture
  4. Implement proper grounding and shielding
  5. Validate signal integrity and EMC
  6. Perform environmental and reliability testing

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

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Frequently Asked Questions

What is the maximum cable length for camera connectivity?

Jisemi SerDes solutions support up to 15 meters of coaxial cable at maximum data rates. The actual maximum length depends on cable quality, with high-quality cables enabling longer reach. For applications requiring longer distances, consider using signal conditioning or selecting higher-performance SerDes devices with advanced equalization.

Use high-quality coaxial cable for maximum reach; contact FAE for specific cable recommendations.

How much power can be delivered over coaxial cable?

Power-over-coax capability depends on cable resistance and voltage drop requirements. Typical implementations deliver 5-12W to camera modules over 10-15m cables. Higher power requires thicker cable or shorter distances. Calculate voltage drop based on cable AWG, length, and camera power consumption to ensure adequate voltage at the camera module.

Calculate voltage drop for your specific cable and power requirements; use thicker cable for higher power or longer distances.

What EMC considerations apply to camera systems?

Camera systems must meet automotive EMC requirements including CISPR 25 for emissions and ISO 11452 for immunity. Key design considerations include proper shielding termination, filtered power entry, and controlled signal transitions. Use coaxial cable with proper shielding and implement common-mode chokes where appropriate. Follow OEM-specific EMC requirements which may be more stringent than industry standards.

Follow automotive EMC design guidelines and test early in development; engage EMC experts for complex systems.

How do I implement functional safety in camera systems?

Functional safety implementation requires systematic approach including safety analysis, diagnostic coverage, and fault handling. Use ASIL-capable SerDes devices with built-in diagnostics. Implement end-to-end safety mechanisms including CRC on video data, timeout monitoring, and redundant paths where required. Follow ISO 26262 development process and document safety case.

Engage functional safety experts early; use Jisemi safety documentation and follow ISO 26262 process.

What diagnostic capabilities are available for production testing?

Jisemi SerDes devices provide comprehensive diagnostics including cable fault detection (open/short), link quality monitoring, eye diagram measurement, and BIST. These features enable automated production testing to verify cable integrity and device functionality. Implement test sequences that verify all diagnostic features and log results for quality tracking.

Implement comprehensive diagnostic testing in production; use Jisemi provided test routines as reference.