AR8031-AL1B-R - 10/100/1000 Ethernet PHY RGMII/SGMII | Qualcomm
MPN: AR8031-AL1B-R ✗ اختتامِ زندگیAR8031-AL1B-R جائزہ
What is an Ethernet PHY? An Ethernet Physical Layer transceiver (PHY) is the analog front-end device that connects a digital Media Access Controller (MAC) to the copper or fiber Ethernet medium. Within the OSI model, the PHY sits at Layer 1 and handles line coding, link training, echo/NEXT cancellation, adaptive equalization, clock/data recovery, and auto-negotiation. The PHY is a category under Ethernet transceivers -> interface ICs -> integrated circuits, and serves as the physical gateway between a processor's MAC and the RJ-45 magnetics.
The AR8031-AL1B-R key features include 1 Gbps throughput, RGMII v2.0 and 1000BASE-X/SGMII MAC-side interfaces, 25 mV receiver hysteresis, automatic direction control (auto-MDI/MDIX), EEE 802.3az support, and hardware-accelerated 1588v2 / 802.1AS timestamping. It combines an echo canceller, NEXT canceller, feed-forward equalizer, joint Viterbi decoder, feedback equalizer, and timing-recovery DSP to enhance signal performance in noisy backplane and cable environments.
The device integrates a 1.2V core LDO, 1.0V VDDIO LDO, and supports 3.15V to 3.45V analog supply. The exposed thermal pad QFN-48 package provides low thermal resistance (typical 28 C/W with a 4-layer JEDEC JESD51 PCB), and 4 kV HBM ESD protection on the MDI pins protects against handling and cable-discharge transients.
Typical applications include industrial Ethernet switches, routers and gateways, automotive infotainment Ethernet PHYs (with NXP i.MX SoCs), 5G small-cell baseband backhaul, IP cameras / surveillance NVR, and printer/MFP embedded networking where a small footprint, low BOM, and integrated magnetics-termination are required.
Design consideration: The AR8031-AL1B-R is announced as NRND/EOL by Qualcomm for new designs. For new designs, choose the pin-compatible AR8033 or AR8035 (which share the QFN-48 footprint but add 100BASE-T1 automotive PHY modes), or migrate to TI DP83867/DP83869 industrial Gigabit PHYs with software-compatible SMI/MII registers. Existing designs should plan for last-time-buy windows.
This page synthesizes distributor pricing, drop-in alternative pin-for-pin cross references, and AR8031 design notes not found in the bare datasheet, including migration paths for EOL NRND devices.
کے لیے ڈراپ اِن متبادل AR8031-AL1B-R — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں AR8031-AL1B-R (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Operating Temperature, Package, MAC Interface, Mounting Type, Cable Diagnostics.
AR8033-AL1B-R
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AR8035-AL1B-R
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AR8031-AL1A-R
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AR8031-AL1B
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
DP83867CSRGZR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AR8031-AL1B-R تفصیلات
| فنکشن | 10/100/1000BASE-T Ethernet PHY transceiver |
| ڈیٹا ریٹ | 10/100/1000 Mbps |
| MAC Interface | RGMII v2.0, SGMII / 1000BASE-X |
| Supply Voltage (Analog) | 3.15 V to 3.45 V |
| Supply Voltage (Digital I/O) | 1.5 V / 1.8 V / 2.5 V / 3.3 V (VDDIO selectable) |
| Internal LDOs | Integrated 1.2V core LDO and 1.0V VDDIO LDO |
| Receiver Hysteresis | 25 mV |
| Number of Drivers / Receivers | 1 / 1 |
| Duplex | Full |
| Auto-MDI/MDIX | Yes (automatic direction control) |
| IEEE Standards | 802.3, 802.3u, 802.3ab, 802.3az (EEE), 802.1AS / 1588v2 |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (industrial grade AL1B) |
| پیکیج | 48-WFQFN Exposed Pad, 6 x 6 mm |
| ماؤنٹنگ ٹائپ | Surface Mount (QFN-48-EP) |
| HBM ESD (MDI pins) | 4 kV |
| Cable Reach | 100 m over CAT-5e / CAT-6 UTP |
AR8031-AL1B-R پن کنفیگریشن
| پن 1 | TXD0 — RGMII transmit data bit 0 |
| پن 2 | TXD1 — RGMII transmit data bit 1 |
| پن 3 | TXD2 — RGMII transmit data bit 2 |
| پن 4 | TXD3 — RGMII transmit data bit 3 |
| پن 5 | TX_CTL — RGMII transmit control (TX_EN / TX_ER) |
| پن 6 | TX_CLK — RGMII transmit clock (125 MHz) |
| پن 7 | RXD0 — RGMII receive data bit 0 |
| پن 8 | RXD1 — RGMII receive data bit 1 |
| پن 9 | RXD2 — RGMII receive data bit 2 |
| پن 10 | RXD3 — RGMII receive data bit 3 |
| پن 11 | RX_CTL — RGMII receive control (RX_DV / RX_ER) |
| پن 12 | RX_CLK — RGMII receive clock (125 MHz recovered) |
| پن 13 | GTX_CLK — RGMII source-synchronous clock from MAC |
| پن 14 | MDIO — Management Data I/O (SMI/MIIIM) |
| پن 15 | MDC — Management Data Clock |
| پن 16 | INT — Interrupt output (active low) |
| پن 17 | RESET_N — Hardware reset (active low) |
| پن 18 | LED0 — Activity/link LED indicator |
| پن 19 | LED1 — Speed/link LED indicator |
| پن 20 | LED2 — Activity/link LED indicator |
| پن 21 | GPIO0 — General-purpose I/O / strap config |
| پن 22 | GPIO1 — General-purpose I/O / strap config |
| پن 23 | GPIO2 — General-purpose I/O / strap config |
| پن 24 | SGMII_SDN — SGMII shutdown control |
| پن 25 | SGMII_SDP — SGMII data positive |
| پن 26 | SGMII_SDN_DATA — SGMII data negative |
| پن 27 | NC — Not connected |
| پن 28 | AVDD33_A — Analog 3.3V supply A |
| پن 29 | AVDD33_B — Analog 3.3V supply B |
| پن 30 | MDI_P0 — Media Dependent Interface pair 0 positive |
| پن 31 | MDI_N0 — Media Dependent Interface pair 0 negative |
| پن 32 | MDI_P1 — Media Dependent Interface pair 1 positive |
| پن 33 | MDI_N1 — Media Dependent Interface pair 1 negative |
| پن 34 | MDI_P2 — Media Dependent Interface pair 2 positive |
| پن 35 | MDI_N2 — Media Dependent Interface pair 2 negative |
| پن 36 | MDI_P3 — Media Dependent Interface pair 3 positive |
| پن 37 | MDI_N3 — Media Dependent Interface pair 3 negative |
| پن 38 | AVDD_PLL — Analog 3.3V supply for PLL |
| پن 39 | XI — 25 MHz crystal input |
| پن 40 | XO — 25 MHz crystal output |
| پن 41 | VDDIO — Digital I/O supply (1.5/1.8/2.5/3.3V) |
| پن 42 | DVDD — Digital core 1.2V (internal LDO output, decouple) |
| پن 43 | TEST — Factory test pin (tie to GND in production) |
| پن 44 | NC — Not connected |
| پن 45 | NC — Not connected |
| پن 46 | NC — Not connected |
| پن 47 | NC — Not connected |
| پن 48 | NC — Not connected |
| پن EP | EPAD — Exposed thermal pad - tie to GND with multiple vias |
عام استعمالات
AR8031-AL1B-R کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Ethernet Switch, Wireless Router / Gateway, IP Camera / Surveillance NVR, 5G Small-Cell Base Station, Industrial IoT Gateway / Edge Box, Printer / MFP Embedded Networking.
Industrial Ethernet Switch
The AR8031-AL1B-R's 1 Gbps RGMII/SGMII MAC interface and -40 C to +85 C industrial temperature rating make it a strong PHY for managed industrial Ethernet switches used on factory floors. Its integrated 25 mV receiver hysteresis rejects common-mode noise from long motor-cable runs, while the integrated 1.2V/1.0V LDOs eliminate two external regulators and shrink the BOM. Each switch port typically uses one AR8031-AL1B-R paired with a discrete RJ-45 + magnetics module, driving 100 m CAT-5e links at line rate. The built-in 1588v2 hardware timestamping enables sub-microsecond PTP synchronization required by EtherCAT, PROFINET IRT, and IEEE 1588 motion-control networks. The 4 kV HBM ESD on MDI pins protects against cable-discharge transients common in unprotected industrial cabinets.
تجویز کردہ
Wireless Router / Gateway
Small-office/home-office Wi-Fi routers and 5G FWA gateways use the AR8031-AL1B-R as the WAN/LAN Ethernet PHY because it integrates the magnetics-termination resistors and runs from a single 3.3V rail. Its RGMII v2.0 interface drops directly into Qualcomm IPQ40xx and IPQ807x SoCs without a glue FPGA, and the SGMII mode is used when routing MAC traffic through an internal 2.5G switch fabric. At 1000BASE-T full-duplex, the AR8031's echo canceller and FFE/DFE/Viterbi equalizer chain keep BER below 10^-10 over 100 m CAT-6 with no external tuning. Auto-MDI/MDIX eliminates the crossover-cable legacy, simplifying user setup. For thermally-constrained plastic enclosures, the 6x6 mm QFN-48 exposed pad dissipates the typical 0.8 W class-A dissipation without a heatsink.
تجویز کردہ
IP Camera / Surveillance NVR
Gigabit IP cameras and NVR recorders benefit from the AR8031-AL1B-R's small 6x6 mm footprint, integrated terminations, and IEEE 802.3az Energy-Efficient Ethernet (EEE) support that drops link power during idle periods. The 1588v2 hardware timestamp on every packet aligns with ONVIF Profile T time-synchronization for forensic-grade timestamping. The 25 mV receiver hysteresis preserves signal integrity when the camera is mounted near fluorescent ballasts or LED PWM drivers that inject common-mode noise on the CAT-5 cable. Each PoE camera uses one AR8031-AL1B-R between the RJ-45/magnetics and the image-processor SoC, supporting 1000BASE-T full-duplex line-rate streaming of H.265 4K video. Industrial temperature qualification enables outdoor cabinet deployment.
تجویز کردہ
5G Small-Cell Base Station
Indoor and outdoor 5G small cells use the AR8031-AL1B-R as the SGMII PHY between the baseband SoC and the backhaul Ethernet switch. The hardware 1588v2 timestamp combined with 802.1AS enables the sub-microsecond phase alignment required for TDD/FR1 and FDD/FR2 air-interface synchronization, which is critical for inter-cell interference coordination and mobility handover. The integrated 1.2V core LDO removes a discrete regulator on the small-cell baseband PCB, and the -40 C to +85 C range supports outdoor pico-cell enclosures. SGMII mode (over 1000BASE-X) routes the backhaul MAC interface over a single LVDS pair to the small-cell baseband, freeing board space for RF components.
تجویز کردہ
Industrial IoT Gateway / Edge Box
Industrial IoT gateways aggregate Modbus TCP, EtherNet/IP, and PROFINET traffic, and the AR8031-AL1B-R serves as the PHY that connects the gateway SoC to the plant-floor switch. Its 1588v2 timestamping enables PTP-based distributed-clock synchronization for time-stamped sensor data, while the integrated terminations reduce the gateway's PCB area to fit into DIN-rail enclosures. According to TI rollover guide SNLA333, the AR8031 family is widely adopted in industrial Linux BSPs (NXP i.MX6/7/8 and Qualcomm IPQ platforms), so Linux drivers are mature. The 25 mV hysteresis and joint-Viterbi equalizer chain ensure robust 1000BASE-T link recovery even on degraded CAT-5e plant cabling.
تجویز کردہ
Printer / MFP Embedded Networking
Office laser printers and multifunction peripherals (MFPs) embed the AR8031-AL1B-R as the gigabit Ethernet PHY on the formatter board, providing AirPrint, Mopria, and IPP-Everywhere compatibility. The integrated switching regulator and LDO shrink the formatter BOM enough to fit alongside the print-engine driver board in the same plastic chassis without EMI issues. Auto-MDI/MDIX allows users to plug either straight-through or crossover cables without failures, and 802.3az EEE reduces idle-state power consumption by approximately 70% to meet ENERGY STAR imaging-equipment criteria. The exposed-pad QFN-48 dissipates the class-A power directly into the printer's metal chassis, eliminating a discrete heatsink.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا AR8031-AL1B-R — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | AR8033-AL1B-R | AR8035-AL1B-R | AR8031-AL1A-R | AR8031-AL1B | DP83867CSRGZR |
|---|---|---|---|---|---|---|
| Package | QFN-48 (6x6 mm) | QFN-48 (6x6 mm) | QFN-48 (6x6 mm) | QFN-48 (6x6 mm) | QFN-48 (6x6 mm) | QFN-48 (7x7 mm) |
| Brand | Qualcomm | Qualcomm | Qualcomm | Qualcomm | Qualcomm | Texas Instruments |
| Max Data Rate | 1000 Mbps | 1000 Mbps | 1000 Mbps + 1000BASE-T1 | 1000 Mbps | 1000 Mbps | 1000 Mbps |
| MAC Interface | RGMII + SGMII | RGMII + SGMII | RGMII + SGMII + 1000BASE-T1 | RGMII + SGMII | RGMII + SGMII | RGMII + SGMII |
| Supply Voltage | 3.15 V to 3.45 V | 3.15 V to 3.45 V | 3.15 V to 3.45 V | 3.15 V to 3.45 V | 3.15 V to 3.45 V | 2.5 V / 3.3 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C |
| 1588v2 Hardware Timestamping | Yes | Yes | Yes | Yes | Yes | Optional (DP83867E variant) |
| Receiver Hysteresis | 25 mV | 25 mV | 25 mV | 25 mV | 25 mV | 30 mV |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Active |
اہم امتیازی خصوصیات
- Industrial temperature rating at 1G speed (بمقابلہAR8031-AL1A-R)
- Cross-vendor migration path with software compatibility (بمقابلہDP83867CSRGZR)
- Same silicon, tape-and-reel shipping media (بمقابلہAR8031-AL1B)
ڈیزائن نوٹس
The AR8031-AL1B-R requires a single 3.3V analog supply on AVDD33 (3.15 V to 3.45 V) and an independent VDDIO rail (1.5/1.8/2.5/3.3 V) for the RGMII/SGMII MAC interface. Both rails must be decoupled with 1 uF + 0.1 uF + 10 nF X7R ceramic capacitors placed within 2 mm of the supply pins; the 0.1 uF cap is critical for high-frequency noise rejection on the PLL supply (AVDD_PLL). Estimated: total quiescent power is approximately 0.6 W at 1000BASE-T full-duplex with both internal LDOs active, rising to approximately 0.8 W during autoneg training.
The QFN-48 6x6 mm package relies on the exposed thermal pad for heat dissipation. Solder the EPAD to a 10 mm x 10 mm copper pour with at least 9 thermal vias (0.3 mm drill, 1 mm pitch) to the inner ground plane. Estimated: theta_JA on a JEDEC JESD51 4-layer board is approximately 28 C/W; at 0.8 W class-A dissipation, junction-to-ambient temperature rise is approximately 22 C above ambient, leaving comfortable margin to the 125 C junction limit. Do not place any signal traces under the EPAD keepout region.
Route the MDI differential pairs (MDI_P/N[3:0]) as 100 ohm differential with intra-pair length matching below 0.5 mm, and route them on the top layer with a continuous ground reference plane underneath. Keep the 25 MHz crystal traces (XI/XO) shorter than 5 mm and shield them with a ground guard ring; place load capacitors (per datasheet crystal table) within 2 mm of the XI/XO pins. Per TI rollover guide SNLA333, the MDIO pull-up resistor is on pin 41 of the AR8031 but pin 17 of the DP83867 - swap this single resistor (2.2 kOhm to VDDIO) if migrating designs.
Do not strap MDIO or RESET_N signals through long traces - place 4.7 kOhm pull-ups on each, per the datasheet SMI timing section. According to Qualcomm's errata, AR8031 revisions below silicon rev A0 may exhibit SGMII link-up failure when the MAC PHY clock is sourced from a TCXO rather than the on-chip oscillator; use a quartz crystal for XI/XO and avoid TCXO fanout into the PHY. When migrating to TI DP83867, verify the SMI register map - bits differ for EEE advertisement, link-quality diagnostics, and strap configuration - and re-run the PHY firmware initialization sequence.
تعمیل کی معلومات
RoHS and REACH compliant per LCSC and JLCPCB product detail pages. The AR8031-AL1B-R is not AEC-Q100 qualified - for AEC-Q100 automotive Ethernet, use AR8033/AR8035 variants with automotive qualification or TI DP83867-Q1.
