DP83TG721RRHARQ1

Specialized Overview

The DP83TG721RRHARQ1 is an automotive Ethernet PHY compliant with IEEE 802.3bp and Open Alliance standards, designed for single twisted-pair transmission. It supports RGMII MAC interfaces and operates within a temperature range of -40°C to +125°C. The device integrates hardware time stamping (IEEE 1588v2/802.1AS) with ±15ns accuracy and fractional PLL for wall clock synchronization without external VCXOs. It features OA TC10 low-power sleep functionality with wake forwarding, diagnostic tools including TDR and CQI, and AVB audio clock generation capabilities.

Specialized Feature Summary

• Supports OA TC10 low power sleep mode with local and remote wake-up and wake forwarding capabilities
• Integrates advanced Time Sensitive Networking (TSN) features including IEEE 1588v2/802.1AS hardware timestamping and highly accurate 1pps signal generation
• Provides Audio Video Bridging (AVB) support via IEEE 1722 media clock generation and synchronized I2S/TDM8 interface clocks
• Includes comprehensive diagnostic tool kit featuring cable quality monitoring, fault detection, and real-time status indicators

Specialized Applications

• Telematics control units (TCU, TBOX)
• Advanced Driver Assistance Systems (ADAS) such as LiDAR, RADAR, and front cameras
• Audio Video Bridging (AVB) networks
• Zonal, gateway, and body control modules

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current package materials information to confirm tape and reel specifications. Ensure that the moisture sensitivity level and reflow temperature ratings align with your assembly process requirements. Confirm RoHS compliance status and lead finish details directly from the latest datasheet revision before finalizing procurement orders.

Specialized Selection Notes

Select this component when RGMII interface support is required alongside advanced TSN and AVB functionalities. Note that the 'R' variant specifically supports RGMII only, whereas the 'S' variant adds SGMII support. Ensure the design accommodates the VQFN-36 package dimensions and thermal pad soldering requirements for optimal performance in automotive environments.

Specialized Part Context

This part belongs to the DP83TG721-Q1 family, which differentiates itself from the DP83TG720x series by offering OA TC10 compliance, integrated AVB clock generation, and enhanced diagnostic tools. It serves as a scalable solution for automotive designs requiring both 100BASE-T1 and 1000BASE-T1 speeds on a single board, provided appropriate BOM changes are implemented.

Specialized Replacement Considerations

The DP83TG721SRHARQ1 is a pin-compatible alternative within the same family that additionally supports SGMII interfaces. Designers requiring SGMII connectivity should consider this variant instead of the RGMII-only DP83TG721RRHARQ1.

Specialized FAQ

Does the DP83TG721RRHARQ1 require an external VCXO for time synchronization?

No, the device integrates a fractional PLL that enables frequency and phase synchronization of the Wall Clock, eliminating the need for an external VCXO.

What MAC interface options are supported by the DP83TG721RRHARQ1?

The DP83TG721RRHARQ1 supports RGMII MAC interfaces. It does not support SGMII; that feature is available in the DP83TG721S-Q1 variant.

How does the device handle low power consumption during idle states?

It supports the OA TC10 standard, allowing for low power sleep modes with local or remote wake-up and wake forwarding capabilities to reduce system power consumption.