DP83TC811SWRNDRQ1 - 100BASE-T1 Automotive Ethernet PHY | TI
N.º da peça: DP83TC811SWRNDRQ1 ✓ AtivoDP83TC811SWRNDRQ1 Visão geral
A 100BASE-T1 Ethernet PHY is the physical-layer component that converts digital MAC data into signals suitable for an unshielded twisted-pair cable and converts received cable signals back into digital data. Within the network hierarchy, it sits below the Ethernet MAC, above the physical medium, and forms part of an automotive connectivity or vehicle-network subsystem. Its low-power design is intended to reduce energy consumption in vehicles where Ethernet links may remain active across many electronic control units.
The DP83TC811S-Q1 family combines 100BASE-T1 cable-side operation with broad host-interface flexibility. MII support is useful for parallel MAC connections, RMII reduces pin requirements, RGMII supports higher signaling rates, and SGMII offers a serial MAC interface. This range of supported interfaces allows the PHY to connect to different automotive Ethernet controllers while preserving a common physical-layer design.
TI describes the device as Automotive Grade 1 and AEC-Q100 qualified. The Diagnostic Tool Kit provides diagnostic functions for evaluating the link and physical-layer behavior. A PRBS frame-generation tool is compatible with internal loopbacks, allowing transmit and receive testing without a MAC. These features support commissioning, fault isolation, and production validation in automotive Ethernet networks.
Typical uses include vehicle backbones, domain controllers, body and comfort modules, telematics units, in-vehicle Ethernet gateways, and automotive diagnostic equipment. The 36-pin VQFN format supports compact multilayer PCB construction, while the wettable-flank package improves visual inspection of solder joints after reflow. Automotive qualification makes the device appropriate for temperature and reliability requirements associated with Grade 1 applications.
Layout should preserve short, controlled-impedance traces between the PHY, magnetic interface, and connector, and should account for the exposed thermal pad and its required copper connection. Because xMII signals are sensitive to timing and edge quality, follow the manufacturer’s reference layout, component placement, decoupling, and interface-guidance requirements. This page organizes the device capabilities, verified package information, diagnostic functions, and application guidance for engineering evaluation.
Alternativas drop-in para DP83TC811SWRNDRQ1 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com DP83TC811SWRNDRQ1 (mesmo formato e footprint) — diferindo em Data Rate, Package, Product Type, Automotive Qualification, MAC Interface Support.
DP83TC811SWRNDTQ1
✅ Drop-InConsulte o preço
Ver ficha técnica →DP83TC811RWRNDRQ1
✅ Drop-InConsulte o preço
Ver ficha técnica →DP83TC811RWRNDTQ1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DP83TC811SWRNDRQ1 Especificações
| Product Type | Automotive 100BASE-T1 Ethernet PHY transceiver |
| Ethernet Standard | IEEE 802.3bw |
| Taxa de dados | 100BASE-T1 |
| Automotive Grade | Grade 1 |
| Automotive Qualification | AEC-Q100 qualified |
| Host Interface | xMII |
| Supported MAC Interfaces | MII, RMII, RGMII, and SGMII |
| Cable Medium | Unshielded single twisted-pair cable |
| Supply Voltage Options | 1.8 V, 2.5 V, and 3.3 V |
| Encapsulamento | 36-pin VQFN wettable-flank package |
| Package Dimensions | 6.00 mm x 6.00 mm |
| Tipo de montagem | Surface mount |
| Diagnostic Toolkit | Included |
| PRBS Generation | Supported with internal loopbacks |
| RoHS Compliance | RoHS3 compliant |
| Moisture Sensitivity Level | MSL 3, 260 C, 168 hours |
Guia de Configuração de Pinos do DP83TC811SWRNDRQ1 6.00 mm x 6.00 mm
Configuração de pinos para DP83TC811SWRNDRQ1 (pacote 6.00 mm x 6.00 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para DP83TC811SWRNDRQ1.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DP83TC811SWRNDRQ1 é adequado para 6 aplicaçãos: Vehicle Backbone Ethernet, Automotive Domain Controller, Body and Comfort Module, Telematics and Connectivity Unit, In-Vehicle Ethernet Gateway, Automotive Ethernet Diagnostics.
Vehicle Backbone Ethernet
The DP83TC811SWRNDRQ1 fits a 100BASE-T1 vehicle-backbone segment that must communicate over an unshielded single twisted-pair cable. Its IEEE 802.3bw-compliant PHY implementation provides the physical layer required between an automotive MAC and the cable, while support for MII, RMII, RGMII, and SGMII lets designers connect multiple controller architectures. The low-power, AEC-Q100-qualified Automotive Grade 1 device is suitable for distributed vehicle networks where size, interface flexibility, and automotive qualification matter. Validation should include the selected Ethernet magnetics, cable impedance, automotive EMC requirements, and the full operating-temperature range.
Recomendado
Automotive Domain Controller
The DP83TC811SWRNDRQ1 is appropriate for a domain controller that serves as an Ethernet aggregation node for vehicle subsystems. The PHY supports a 100BASE-T1 link over unshielded twisted pair and can operate with an MII, RMII, RGMII, or SGMII MAC interface, reducing the need to lock the controller architecture before the board design is complete. Its 6.00 mm by 6.00 mm 36-pin VQFN package also supports compact multilayer layouts. During integration, verify signal timing for the selected MAC mode, provide clean local supplies at 1.8 V, 2.5 V, or 3.3 V, and follow TI layout guidance around the exposed pad.
Recomendado
Body and Comfort Module
A body or comfort module can use the DP83TC811SWRNDRQ1 to add a 100BASE-T1 Ethernet link without requiring a conventional larger Ethernet magnetics arrangement. The device is designed for unshielded single twisted-pair media and combines automotive-grade qualification with a low-power profile. MII and RMII support may be useful for lower-pin-count module implementations, while RGMII or SGMII provides alternatives for higher-performance MAC connectivity. The design must account for cable routing, ground references, ESD protection, magnetics selection, and the PCB spacing needed to keep cable-side energy away from sensitive digital circuitry.
Recomendado
Telematics and Connectivity Unit
The DP83TC811SWRNDRQ1 suits automotive telematics and connectivity units that bridge an in-vehicle Ethernet network to higher-level vehicle electronics. A 100BASE-T1 physical layer provides a compact link over unshielded twisted pair, while the four supported MAC-interface formats allow reuse across different controller selections. Automotive Grade 1 qualification supports integration into vehicle environments, and the diagnostic toolkit helps identify link or physical-layer problems during installation and service. Engineers should confirm the module’s temperature envelope, isolation strategy, cable-length requirements, and regulatory EMC performance rather than treating the PHY qualification as a substitute for complete product validation.
Recomendado
In-Vehicle Ethernet Gateway
The DP83TC811SWRNDRQ1 can serve as the 100BASE-T1 endpoint in an in-vehicle Ethernet gateway that translates or aggregates traffic among automotive domains. Its xMII flexibility supports MII, RMII, RGMII, and SGMII host connections, giving the gateway designer several paths for connecting a switch, microcontroller, or communications processor. The low-power device and compact VQFN package help conserve board area in central electronic control units. For production implementation, validate the gateway’s clocking, MAC timing, reset behavior, diagnostic access, magnetics, and cable return path against the manufacturer reference design.
Recomendado
Automotive Ethernet Diagnostics
The DP83TC811SWRNDRQ1 is useful in automotive diagnostic benches and service equipment because its Diagnostic Tool Kit can assist with physical-link troubleshooting. The integrated PRBS frame generator is compatible with internal loopbacks, allowing transmit-and-receive testing without a MAC, which can simplify board validation and fault isolation. These functions complement the device’s 100BASE-T1 transceiver in end-node designs. Test software still needs the correct device driver or register access method, and the bench should represent the intended cable, magnetics, termination, and supply conditions to reproduce in-vehicle behavior accurately.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DP83TC811SWRNDRQ1 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DP83TC811SWRNDTQ1 | DP83TC811RWRNDRQ1 | DP83TC811RWRNDTQ1 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 36-pin VQFN wettable-flank package | 36-pin VQFN wettable-flank package | 36-pin VQFN wettable-flank package | 36-pin VQFN wettable-flank package |
| Ethernet Data Rate | 100BASE-T1 | 100BASE-T1 | 100BASE-T1 | 100BASE-T1 |
| Supported MAC Interfaces | MII, RMII, RGMII, and SGMII | MII, RMII, RGMII, and SGMII | MII, RGMII, and RMII | MII, RGMII, and RMII |
| SGMII Support | Yes | Yes | No | No |
| Supply Voltage Options | 1.8 V, 2.5 V, and 3.3 V | 1.8 V, 2.5 V, and 3.3 V | 1.8 V, 2.5 V, and 3.3 V | 1.8 V, 2.5 V, and 3.3 V |
| Diagnostic Toolkit | Included | Included | Included | Included |
| PRBS Internal-Loopback Testing | Supported | Supported | Supported | Supported |
Principais diferenciais
- Broader MAC-interface selection than the R-family alternatives (vs DP83TC811RWRNDRQ1)
- Identical primary performance with a different final orderable code (vs DP83TC811SWRNDTQ1)
- Automotive Grade 1 positioning for vehicle networking (vs DP83TC811RWRNDTQ1)
- Integrated commissioning and production-test capabilities (vs DP83TC811RWRNDRQ1)
Notas de projeto
Use the Texas Instruments reference layout as the starting point for the 36-pin VQFN footprint, exposed-pad vias, decoupling, and Ethernet magnetics placement. Keep the exposed thermal pad connected to the specified ground-plane structure and use the manufacturer’s via pattern to preserve electrical and thermal performance. Confirm land geometry against the current package drawing because exposed-pad dimensions and paste design can change between package revisions.
Separate cable-side and host-side high-speed paths as far as practical, especially around the Ethernet magnetics and line-driver connection. Minimize loop area on the 100BASE-T1 side, provide a continuous return path, and avoid routing xMII or SGMII signals beneath noisy power and isolation barriers. Follow the device’s interface timing and impedance guidance for the selected MII, RMII, RGMII, or SGMII mode.
Do not substitute an R-family configuration for the S-family target when the host design depends on SGMII; the cited interface difference removes one otherwise supported MAC connection. Also verify that the final orderable code has the required reel or other delivery format, that the Ethernet magnetics are supported for the selected cable and automotive EMC design, and that the device is operated within its complete electrical and temperature limits.
Treat clock, data, and control edges on the selected xMII interface as timing-sensitive. Use the manufacturer-recommended interface topology, termination strategy, and reference clock implementation, and validate the assembled board with the intended MAC and cable equipment. Diagnostic PRBS and internal-loopback features can help separate host-interface problems from physical-layer or cable faults during bring-up.
Informações de conformidade
RoHS3 compliance and AEC-Q100 qualification are identified for the DP83TC811S-Q1 family. REACH status, lead-free classification, halogen-free classification, and conflict-minerals status are not established.
