company blog about [TI] Ethernet IC DP83TG721RRHARQ1: 1000BASE-T1 Automotive Ethernet PHY with Advanced TSNs and AVBs

Shenzhen Mingjiada Electronics Co., Ltd. New and Original [TI] Ethernet IC DP83TG721RRHARQ1 Automotive Grade 1000BASE-T1 Ethernet PHY with TC-10, 802.1AS, Advanced TSN, and AVB Characteristics

1. Description

The DP83TG721RRHARQ1 is an automotive 1000Base-T1 Ethernet physical layer transceiver that complies with IEEE 802.3bp and Open Alliance standards.The DP83TG721-Q1 provides all the physical layer functionality required to send and receive data over unshielded/shielded, single twisted-pair cable. The device provides xMII flexibility and supports both RGMII and SGMII MAC interfaces.

The DP83TG721-Q1 supports the OA TC10 low-power hibernation function (with wake-up forwarding), which reduces system power consumption when communication is not required. The device is supplied with a diagnostic toolkit containing a number of real-time monitoring tools, debugging tools and test patterns.

The DP83TG721-Q1 integrates IEEE 1588v2/802.1AS hardware timestamps and fractional PLLs for highly accurate time synchronisation. The fractional PLL enables frequency/phase synchronisation of wall clocks without the need for external VCXOs and generates a wide range of time-synchronised frequencies required for audio, video and other ADAS applications.

The DP83TG721-Q1 also integrates IEEE 1722 CRF decoding to generate media clocks (wall-clock synchronisation) for AVB and other audio standards.The DP83TG721-Q1 also generates FSYNC/SCLK (wall-clock synchronisation) for I2S/TDM8 interfaces required for audio applications.

The DP83TG721-Q1 is compatible with Texas Instruments' 100BASE-T1 PHY and 1000BASE-T1 PHY, allowing designs to be scaled for both speeds with a single board.

2. Specifications

• Manufacturer: Texas Instruments
• Family: DP83TG721x-Q1
• Applications: Cameras, Ethernet
• Interface: MII, RGMII, RMII, SGMII
• Voltage - Supply: 1.05V ~ 1.21V, 2.97V ~ 3.63V
• Package/Shell: 36-VFQFN Exposed Pad
• Supplier Device Package: 36-VQFN (6x6)
• Grade: Automotive Grade
• Qualification: AEC-Q100
• Mounting Type: Surface Mount, Wettable Flanks

3. Features

• IEEE802.3bp 1000BASE-T1 compliant
• OA TC10 compliant, <20µA sleep current
• Local and remote wake-up and wake-up forwarding
• Advanced TSN
• IEEE 1588v2/802.1AS time synchronisation
• Hardware timestamp with integrated phase correction
• High precision 1pps signalling (±15ns)
• Audio Clock
• AVB IEEE 1722 media clock generation function
• Phase-synchronised wall clock output: 1KHz to 50MHz
• I2S and TDM8 SCLK/FSYNC/MCLK clock generation
• Open Alliance TC12 interoperability and EMC compliant
• OA EMC compliant
• SAE J2962-3 EMC compliant
• Integrated LPF on MDI pin
• MAC interfaces: MII, RMII, RGMII, and SGMII
• Supported I/O voltages 3.3V, 2.5V and 1.8V
• Pin compatible with TI's 100BASE-T1 PHY and 1000BASE-T1 PHY
• Single-board design for 100BASE-T1 and 1000BASE-T1 with only BOM change
• Diagnostic Toolkit
• Temperature, voltage, and ESD monitors
• Data throughput calculator: built-in MAC packet generator, counter and error checker
• Signal quality indicator
• TDR-based cable open and short circuit fault detection
• CQI for monitoring cable degradation
• Loopback mode
• AEC-Q100 certified
• IEC61000-4-2 ESD: ±8kV contact discharge

Simplified Schematic