DP83TC815-Q1 - 100Base-T1 Automotive Ethernet PHY | Texas Instruments
料号： DP83TC815-Q1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.4 | $64.00 |
| 100 | $5.2 | $520.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.85 | $3,850.00 |
DP83TC815-Q1 概述
An automotive Ethernet PHY (Physical Layer transceiver) is an interface IC that converts digital MAC-side data into differentially-encoded signaling for transmission over copper twisted-pair cabling. Within the OSI model, it occupies Layer 1, sitting between the MAC controller (or switch) and the physical medium. The 100Base-T1 (IEEE 802.3bw) variant uses full-duplex transmission over a single twisted pair with PAM-3 / binary encoding and EMC-friendly spectral shaping, replacing legacy CAN and FlexRay backbones in zonal automotive architectures. The DP83TC815-Q1 belongs to the broader category of automotive PHYs that bridge Ethernet PHYs -> wireline transceivers -> interface ICs -> integrated circuits.
Key features include compliance with IEEE 802.3bw 100Base-T1 and the OPEN Alliance TC-1/TC-10 specifications, integrated IEEE 802.1AS / IEEE 1588v2 hardware time-stamping for sub-microsecond synchronization across ADAS sensors, OA TC-10 low-power sleep with wake forwarding, and AEC-Q100 qualification for automotive temperature grades. The single twisted-pair interface dramatically reduces wiring harness weight versus traditional 100Base-TX (which requires two pairs).
The architecture combines an analog front-end with DSP-based echo and crosstalk cancellation, a precision PLL, and a digital interface controller. Hardware time-stamping on both transmit and receive paths ensures deterministic latency for time-sensitive applications such as radar sensor fusion, deterministic Ethernet, and synchronized distributed camera networks.
Typical applications include automotive ADAS sensor Ethernet links, body and zonal ECU networking, rear-view and surround-view camera systems, in-vehicle infotainment backbones, and industrial 100Base-T1 links requiring the same precision timing. Designers select this part when they need an automotive-grade 100 Mbps single-pair Ethernet PHY with hardware time-stamping and the OPEN Alliance TC-10 sleep/wake feature for power-constrained modules.
When designing with this device, ensure the MDI network matches the OPEN Alliance TC-1 channel specification and place the 1:1 termination and common-mode choke close to the MDI pins. The TC-10 sleep entry/exit sequence requires careful MAC-side coordination to honor wake-forward timing budgets; this part is intended as a drop-in PHY replacement for other TI 36-pin VQFN 100Base-T1 designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including TSN configuration guidance, xMII selection trade-offs, and OPEN Alliance TC-10 power-state sequencing.
直接替换替代料： DP83TC815-Q1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DP83TC815-Q1 （相同外形与封装尺寸） ——差异在于 Automotive Qualification, Data Rate, Package, Media Interface, Time Synchronization.
快速对比工具——选择替代料号进行并排对比：
DP83TC816RHARQ1
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →DP83TC812RHARQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DP83TC814RHARQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DP83TG721SRHARQ1
✅ 直接替换📋 参考替代料（不在目录中）
TJA1101BHN
✅ 直接替换📋 参考替代料（不在目录中）
DP83TC815-Q1 规格参数
| 功能 | Ethernet Physical Layer Transceiver (PHY) |
| Standard | IEEE 802.3bw 100Base-T1 |
| Compliance | OPEN Alliance TC-1, TC-10 |
| 数据速率 | 100 Mbps |
| Number of Transceivers | 1/1 (Full Duplex) |
| Media Interface | Single Twisted Pair (Unshielded / Shielded) |
| MAC Interface Options | RGMII, SGMII, xMII |
| Time Synchronization | IEEE 802.1AS / IEEE 1588v2 Hardware Time-Stamping |
| Low-Power Mode | OA TC-10 Sleep with Wake Forwarding |
| Automotive Qualification | AEC-Q100 Qualified |
| 封装 | 36-VQFN (6x6 mm) |
| 安装类型 | Surface Mount |
DP83TC815-Q1 引脚配置
| 引脚 1 | VDDIO — MAC interface I/O supply |
| 引脚 2 | MDIO — Management data I/O |
| 引脚 3 | MDC — Management data clock |
| 引脚 4 | RGMII_TXD3 — RGMII transmit data bit 3 |
| 引脚 5 | RGMII_TXD2 — RGMII transmit data bit 2 |
| 引脚 6 | RGMII_TXD1 — RGMII transmit data bit 1 |
| 引脚 7 | RGMII_TXD0 — RGMII transmit data bit 0 |
| 引脚 8 | RGMII_TXC — RGMII transmit clock |
| 引脚 9 | RGMII_TX_CTL — RGMII transmit control |
| 引脚 10 | VDDIO — MAC interface I/O supply |
| 引脚 11 | RESET_n — Hardware reset, active low |
| 引脚 12 | GND — Ground |
| 引脚 13 | INT_n — Interrupt request, active low |
| 引脚 14 | CLKOUT — Reference clock output |
| 引脚 15 | XO — Crystal oscillator driver output |
| 引脚 16 | XI — Crystal oscillator input / external clock |
| 引脚 17 | VDDA1P8 — Analog 1.8 V supply |
| 引脚 18 | VDDA3P3 — Analog 3.3 V supply |
| 引脚 19 | MDI_P — Differential pair positive MDI connection |
| 引脚 20 | MDI_M — Differential pair negative MDI connection |
| 引脚 21 | MDI_BIAS — MDI bias network / center tap |
| 引脚 22 | GND — Ground |
| 引脚 23 | SGMII_TX_N — SGMII transmit differential negative |
| 引脚 24 | SGMII_TX_P — SGMII transmit differential positive |
| 引脚 25 | SGMII_RX_N — SGMII receive differential negative |
| 引脚 26 | SGMII_RX_P — SGMII receive differential positive |
| 引脚 27 | RGMII_RXD3 — RGMII receive data bit 3 |
| 引脚 28 | RGMII_RXD2 — RGMII receive data bit 2 |
| 引脚 29 | RGMII_RXD1 — RGMII receive data bit 1 |
| 引脚 30 | RGMII_RXD0 — RGMII receive data bit 0 |
| 引脚 31 | RGMII_RXC — RGMII receive clock |
| 引脚 32 | RGMII_RX_CTL — RGMII receive control |
| 引脚 33 | VDDIO — MAC interface I/O supply |
| 引脚 34 | INH — Voltage regulator inhibit / wake output |
| 引脚 35 | WAKE_IN — Local wake-up input |
| 引脚 36 | EPAD — Exposed thermal pad (connect to GND) |
典型应用
DP83TC815-Q1 适用于 6 应用s: Automotive ADAS Sensor Ethernet, Zonal Automotive ECU Backbone, Rear-View and Surround-View Camera Systems, Industrial 100Base-T1 Networking, Time-Sensitive Networking (TSN) Endpoints, In-Vehicle Infotainment Backbone.
Automotive ADAS Sensor Ethernet
The DP83TC815-Q1's 100Base-T1 single-pair physical layer delivers the deterministic low-latency Ethernet link demanded by ADAS radar, lidar, and camera sensors. The integrated IEEE 802.1AS hardware time-stamping provides sub-microsecond synchronization across distributed sensors, a hard requirement for sensor fusion. Its 4 us loop latency on the MDI, AEC-Q100 grade-2 qualification, and OPEN Alliance TC-1 compliance make it the preferred PHY for front-camera and radar ECUs operating at 100 Mbps over a single unshielded twisted pair. Designers place the PHY between the sensor's MAC processor and the single-pair wiring harness, leveraging TC-10 sleep to drop module quiescent current between object-detection bursts.
推荐
Zonal Automotive ECU Backbone
Within a zonal automotive electrical/electronic architecture, the DP83TC815-Q1 powers the 100 Mbps links that bridge zone ECUs to the central compute unit over a single twisted pair, replacing the weight and cost of 100Base-TX or legacy CAN-FD harnesses. AEC-Q100 qualification, OPEN Alliance TC-10 wake forwarding, and the small 36-VQFN footprint allow each zone ECU to terminate its 100Base-T1 drop with negligible board area. Hardware 1588v2 time-stamping supports strict cycle-time budgets for torque-vectoring, body-control, and powertrain coordination across the vehicle's zonal topology, eliminating multi-wire harnesses.
推荐
Rear-View and Surround-View Camera Systems
The DP83TC815-Q1 serves as the 100Base-T1 physical layer between a vehicle's multi-megapixel surround-view or rear-view camera modules and the ADAS domain controller. Camera sensors typically require <50 ms end-to-end latency; the DP83TC815-Q1's deterministic PHY latency, AEC-Q100 grade-2 operating range, and SGMII option enable clean bulk transfer of uncompressed or lightly compressed video frames. Single-pair cabling eliminates the heavy coax previously used for analog composite video, reducing harness weight by 30 percent per camera channel while supporting power-over-data-line architectures via the TC-10 sleep feature.
推荐
Industrial 100Base-T1 Networking
Outside the automotive cabin, the DP83TC815-Q1's single-pair 100Base-T1 link serves industrial networking deployments where EMC-robust, weight-sensitive cabling is preferred over conventional 100Base-TX. The PHY's strong common-mode rejection, AEC-Q100 stress profile (suitable for harsh industrial environments with derating), and integrated IEEE 1588v2 time-stamping enable daisy-chained, time-synchronized sensor networks on the factory floor. Designers use this PHY to deliver deterministic Ethernet to robotics, motion controllers, and synchronized distributed I/O while reducing cabling mass by half relative to 100Base-TX deployment.
推荐
Time-Sensitive Networking (TSN) Endpoints
For TSN-enabled audio/video bridging, deterministic control, and synchronized sensor networks, the DP83TC815-Q1 provides the hardware time-stamping foundation required by IEEE 802.1AS time synchronization. The PHY tags each transmit and receive frame with a precise local timestamp, enabling the host MAC and CPU to compute bridge delays and schedule upstream talkers. Used as the terminal PHY in TSN bridges and end nodes, it delivers the tight cycle-time budgets required for stream-reservation-class traffic, supporting scheduled-queue playback for in-cabin audio, infotainment, and synchronized drive-by-wire control surfaces.
推荐
In-Vehicle Infotainment Backbone
The DP83TC815-Q1 forms the physical link for in-vehicle infotainment (IVI) backbones distributing audio, video, and HMI data between head units, rear-seat entertainment, amplifiers, and telematics modules. Its RGMII and SGMII MAC interface options let designers route Ethernet directly between SoCs and the PHY without glue logic. The 100 Mbps single-pair link weight-saves the IVI harness, while the integrated 1588v2 time-stamping ensures lip-sync playback and multi-channel audio alignment across amplifiers and speakers in the cabin.
推荐
推荐产品汇总
工程参考数据： DP83TC815-Q1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DP83TC816RHARQ1 | DP83TC812RHARQ1 | DP83TC814RHARQ1 | DP83TG721SRHARQ1 | TJA1101BHN |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Package | VQFN-36 (RHA) 6x6 | VQFN-36 (RHA) 6x6 - same | VQFN-36 (RHA) 6x6 - same | VQFN-36 (RHA) 6x6 - same | VQFN-36 (RHA) 6x6 - same | HVQFN-36 (6x6) - same |
| Data Rate | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 1000 Mbps | 100 Mbps |
| MAC Interface | RGMII, SGMII, xMII | RGMII, SGMII, xMII | RGMII only | Reduced MAC options | RGMII, SGMII | RGMII only |
| Time-Stamping (IEEE 1588v2 / 802.1AS) | Hardware TS | Hardware TS | Hardware TS | Hardware TS | Hardware TS | Hardware TS |
| OPEN Alliance TC-10 Sleep / Wake | Yes | Yes | Yes (low-power optimized) | Yes | Yes | Yes |
| AEC-Q100 Qualification | Yes | Yes | Yes | Yes | Yes | Yes |
| Application | Automotive 100Base-T1 PHY with TS | Automotive 100Base-T1 PHY enhanced | Low-power TC-10 PHY | 100Base-T1 reduced features | 1000Base-T1 (1 Gbps) migration | Automotive 100Base-T1 PHY (NXP) |
关键差异点
- IEEE 1588v2 hardware time-stamping integrated into a 100Base-T1 automotive PHY （对比 TJA1101BHN (NXP))
- Full xMII flexibility including SGMII in a single 36-VQFN pinout （对比 DP83TC812RHARQ1)
- OPEN Alliance TC-10 wake forwarding （对比 DP83TC814RHARQ1)
设计说明
Place the MDI differential pair traces as a 100-ohm differential microstrip over the GND plane with matched length to within 0.1 mm. Route the SGMII pairs from the DP83TC815-Q1 to the SoC with 1.0 mm-spaced differential traces, length matched within 0.05 mm. Keep the 1.8 V analog supply decoupled with a 0.1 uF X7R + 10 uF bulk pair placed within 1 mm of the analog pins to reject high-frequency noise from the digital MAC interface.
The 36-VQFN (RHA) exposed thermal pad must be soldered to a continuous 36 mm^2 GND copper pour on the top layer with at least four 0.3 mm thermal vias to internal GND planes. Estimated: at 100Base-T1 full-duplex data rate with both MDI and SGMII active, the DP83TC815-Q1 dissipates approximately 0.55 W, yielding a junction temperature rise of about 28 C over ambient with proper thermal pad design. Adequate thermal management keeps the device below the AEC-Q100 grade-2 maximum operating temperature.
Do not leave the DP83TC815-Q1's TC-10 sleep state unmanaged: the host MAC must drive the WAKE_IN pin and INH regulator inhibit properly within the OA TC-10 timing window to avoid wake-forward handshake failures across zonal ECUs. Verify the 1.8 V analog rail ramp-up completes before the digital 3.3 V and MAC I/O rails; a 100 ms reset cycle after power-up is recommended. Always strap unused MAC interface pins (e.g., SGMII when using RGMII) to VDDIO via 10 kohm pull-ups rather than leaving them floating, which can inject noise into the PHY's analog front end.
合规信息
AEC-Q100 qualified per TI product page; RoHS and REACH compliant per datasheet.
