Overview
The DP83TC812R-Q1 is an IEEE 802.3bw-compliant automotive Ethernet PHYTER™ 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 provides all necessary physical layer functions for transmitting and receiving data over single twisted-pair cables. The DP83TC812R-Q1 is housed in a 6.00mm × 6.00mm, 36-pin VQFN wettable flank package, making it pin-2-pin compatible with the DP83TG720 (1000BASE-T1) and form factor compatible with the DP83TC811, allowing for a single PCB layout to be used across multiple models.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VQFN (36 pins), 6.00mm × 6.00mm |
| Operating Temperature Range | -40°C to 125°C |
| MAC Interfaces | MII, RMII, RGMII, and SGMII |
| I/O Voltages | Configurable: 3.3V, 2.5V, and 1.8V |
| ESD Protection | ±8kV HBM for pins 12 and 13, IEC61000-4-2 ESD classification level 4 |
| Power Consumption | < 230mW active power, < 20µA sleep current |
| Compliance | Open Alliance, IEEE 802.3bw, SAE J2962-3 EMC, AEC-Q100 qualified |
Key Features
- Open Alliance and IEEE 802.3bw 100BASE-T1 compliant
- Passes Level IV emissions with Integrated LPF
- TC-10 compliant with < 20µA sleep current
- SAE J2962-3 EMC compliant
- Configurable I/O voltages: 3.3V, 2.5V, and 1.8V
- MAC interfaces: MII, RMII, RGMII, and SGMII
- Optional separate voltage rail for MAC interface pins
- AEC-Q100 qualified for automotive applications with temperature grade 1: –40°C to +125 °C ambient operating temperature
- IEEE 1588 SFD support and TSN compliant with 802.3br frame pre-emption support
- Diagnostic Tool Kit with real-time monitoring tools, debug tools, and test modes
- Signal Quality Indication (SQI), Time Domain Reflectometry (TDR), Electrostatic discharge sensor, Voltage sensor, PRBS Built-in Self-Test, and Loopbacks
- Functional Safety-Capable with documentation available to aid in functional safety system design
Applications
- Advanced Driver Assistance Systems (ADAS)
- Gateway and Body Control
- Telematics
Q & A
- What is the operating temperature range of the DP83TC812R-Q1?
The operating temperature range is -40°C to 125°C.
- What MAC interfaces does the DP83TC812R-Q1 support?
The device supports MII, RMII, RGMII, and SGMII MAC interfaces.
- What is the power consumption of the DP83TC812R-Q1 in active and sleep modes?
The device consumes less than 230mW in active mode and less than 20µA in sleep mode.
- Is the DP83TC812R-Q1 compliant with automotive standards?
Yes, it is AEC-Q100 qualified and SAE J2962-3 EMC compliant.
- What diagnostic tools are included in the DP83TC812R-Q1?
The device includes a Diagnostic Tool Kit with features such as Signal Quality Indication (SQI), Time Domain Reflectometry (TDR), Electrostatic discharge sensor, Voltage sensor, PRBS Built-in Self-Test, and Loopbacks.
- What is the package type and size of the DP83TC812R-Q1?
The device is housed in a 6.00mm × 6.00mm, 36-pin VQFN wettable flank package.
- Is the DP83TC812R-Q1 compatible with other Texas Instruments models?
Yes, it is pin-2-pin compatible with the DP83TG720 (1000BASE-T1) and form factor compatible with the DP83TC811.
- What ESD protection does the DP83TC812R-Q1 offer?
The device offers ±8kV HBM ESD protection for pins 12 and 13 and IEC61000-4-2 ESD classification level 4.
- Does the DP83TC812R-Q1 support functional safety features?
Yes, the device is Functional Safety-Capable with documentation available to aid in functional safety system design.
- What are some common applications of the DP83TC812R-Q1?
Common applications include Advanced Driver Assistance Systems (ADAS), Gateway and Body Control, and Telematics.
