Texas Instruments DP83TG721-Q1 1000Base-T1 Ethernet PHY Transceiver
Texas Instruments DP83TG721-Q1 1000Base-T1 Ethernet PHY Transceiver is an IEEE 802.3bp and Open Alliance transceiver that provides all physical layer functions needed to receive and transmit data over unshielded/shielded single twisted-pair cables. The device offers xMII flexibility with support for RGMII and SGMII MAC interfaces. DP83TG721-Q1 supports the OA TC10 low-power sleep feature (with wake forwarding) to reduce system power consumption when communication is not required. This device offers the Diagnostic Tool Kit, with an extensive list of real-time monitoring tools, debug tools and test modes.
Texas Instruments DP83TG721-Q1 integrates IEEE 1588v2/802.1AS hardware time stamping and fractional PLL, enabling highly accurate time synchronization. The fractional PLL enables frequency/phase synchronization of the Wall Clock, eliminating the need for external VCXO and generating a wide range of time-synchronized frequencies needed for Audio, Video, and other ADAS applications. DP83TG721-Q1 also integrates IEEE 1722 CRF decode to generate a Media Clock (wall clock synchronized) for AVB and other Audio standards. The DP83TG721-Q1 can also generate FSYNC/SCLK (wall clock synchronized) for the I2S/TDM8 interface needed for audio applications.
The DP83TG721-Q1 is compatible with TI’s 100BASE-T1 PHYs and 1000BASE-T1 PHYs, enabling design scalability with a single board for both speeds.
Features
- IEEE 802.3bp 1000BASE-T1 compliant
- OA TC10 compliant, < 20µA sleep current
- Local and remote wake-up and wake-forwarding
- Advanced TSN
- IEEE 1588v2/802.1AS time synchronization
- Hardware time-stamping with integrated phase correction
- Highly accurate 1pps signal (±15ns)
- Audio clocking
- AVB IEEE 1722 media clock generation capability
- 1KHz to 50MHz phase synchronized wall clock output
- 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 pins
- MII, RMII, RGMII, and SGMII MAC interfaces
- Supported I/O voltages of 3.3V, 2.5V, and 1.8V
- Pin compatible with TI’s 100BASE-T1 PHYs and 1000BASE-T1 PHYs
- Single board design for 100BASE-T1 and 1000BASE-T1 with required BOM change
- Diagnostic tool kit
- Temperature, voltage, ESD monitor
- Data throughput calculator with inbuilt MAC packet generator, counter, and error checker
- Signal quality indicator
- TDR-based open and short cable fault detection
- CQI for cable degradation monitoring
- Loopback modes
- AEC-Q100 qualified
- IEC61000-4-2 ESD (±8kV contact discharge)
Applications
- Telematics control unit (TCU, TBOX)
- AVB
- ADAS (LIDAR, RADAR, front camera)
- Zonal, gateway, and body control
Simplified Schematic
