Overview
The DP83TC812SRHARQ1 is an IEEE 802.3bw-compliant automotive PHYTER™ Ethernet physical layer transceiver developed by Texas Instruments. This device is designed to operate with unshielded twisted-pair cables and supports the TC-10 sleep and wake features. It is part of the DP83TC812 family, which includes variants such as the DP83TC812S-Q1 and DP83TC812R-Q1. The DP83TC812SRHARQ1 is AEC-Q100 qualified, ensuring its suitability for automotive applications with a temperature range of –40°C to +125°C. It integrates various diagnostic tools and real-time monitoring capabilities, making it a robust solution for automotive Ethernet networks.
Key Specifications
| Parameter | Description |
|---|---|
| Compliance | IEEE 802.3bw, Open Alliance, TC-10, SAE J2962-3 EMC |
| Operating Temperature | –40°C to +125°C |
| Supply Voltage | Core: 3.3 V, IO: 1.8 V, 2.5 V, or 3.3 V |
| MAC Interfaces | MII, RMII, RGMII, SGMII (for DP83TC812S-Q1) |
| Package | 36-pin VQFN wettable flank package |
| ESD Protection | ±8-kV HBM ESD for pins 12 and 13, IEC61000-4-2 ESD classification level 4 |
| Power Consumption | < 230 mW active power operation |
| Sleep Current | < 20μA |
Key Features
- Configurable I/O voltages: 3.3 V, 2.5 V, and 1.8 V
- Optional separate voltage rail for MAC interface pins
- Diagnostic Tool Kit including signal quality indication (SQI), time domain reflectometry (TDR), electrostatic discharge sensor, voltage sensor, and PRBS Built-in Self-Test
- IEEE 1588 SFD support and TSN compliance with 802.3br frame pre-emption support
- Functional Safety-Capable with documentation available for system design
- Integrated low pass filter on the MDI side to reduce emissions
- Pseudo random binary sequence (PRBS) frame generation tool compatible with internal loopbacks
Applications
- Advanced Driver Assistance Systems (ADAS)
- Gateway and Body Control
- Telematics
Q & A
- What is the operating temperature range of the DP83TC812SRHARQ1?
The operating temperature range is –40°C to +125°C.
- What are the supported MAC interfaces for the DP83TC812SRHARQ1?
The device supports MII, RMII, RGMII, and SGMII (for DP83TC812S-Q1) MAC interfaces.
- What is the power consumption of the DP83TC812SRHARQ1 in active mode?
The active power consumption is less than 230 mW.
- Does the DP83TC812SRHARQ1 have built-in ESD protection?
Yes, it has ±8-kV HBM ESD protection for pins 12 and 13 and IEC61000-4-2 ESD classification level 4.
- What diagnostic tools are included in the DP83TC812SRHARQ1?
The device includes a Diagnostic Tool Kit with signal quality indication (SQI), time domain reflectometry (TDR), electrostatic discharge sensor, voltage sensor, and PRBS Built-in Self-Test.
- Is the DP83TC812SRHARQ1 compliant with automotive standards?
Yes, it is compliant with SAE J2962-3 EMC and AEC-Q100 qualified for automotive applications.
- What is the package type of the DP83TC812SRHARQ1?
The device is housed in a 36-pin VQFN wettable flank package.
- Can the DP83TC812SRHARQ1 be used in functional safety applications?
Yes, it is Functional Safety-Capable with available documentation to aid in system design.
- Does the DP83TC812SRHARQ1 support IEEE 1588 and TSN?
Yes, it supports IEEE 1588 SFD and is TSN compliant with 802.3br frame pre-emption support.
- What is the sleep current of the DP83TC812SRHARQ1?
The sleep current is less than 20μA.
