KSZ9031RNXVB-VAO - Gigabit Ethernet RGMII Transceiver AEC-Q100 | Microchip
MPN: KSZ9031RNXVB-VAO ✓ सक्रियKSZ9031RNXVB-VAO अवलोकन
A Gigabit Ethernet transceiver is a physical-layer device that connects a MAC (Media Access Controller) to the copper medium via twisted-pair magnetics, encoding/decoding 1000BASE-T/100BASE-TX/10BASE-T signaling and providing PCS, PMA, and PHY functions defined by IEEE 802.3 clauses 22-40. The KSZ9031 family belongs to the Ethernet PHY hierarchy (Ethernet transceiver -> physical layer device -> network interface IC) and supports GMII/MII or RGMII MAC-side interfaces depending on sub-variant, sitting between the SoC MAC and the RJ45/Magnetics front-end.
Key features include 3.3V/2.5V/1.8V tolerant MAC-side I/Os, on-chip termination resistors, AEC-Q100 Grade 2 qualification (-40C to +105C), Energy-Efficient Ethernet (EEE) support per IEEE 802.3az, Wake-on-LAN, auto-negotiation with HP Auto-MDIX, and remote/local loopback for diagnostic verification of both analog and digital data paths. The WQFN wettable-flank package enables automated optical inspection (AOI) of solder joints - critical for automotive PCB assembly.
Architecturally, the device integrates a DSP-based baseband processor, a low-noise analog front-end with on-chip LDO regulators, and an RGMII interface block that supports RGMII-ID (internal delay on TX, RX, or both). It interfaces directly to a single 3.3V supply (with internal regulation generating 1.2V core rails), reducing external BOM. Typical power consumption is approximately 450 mW active at 1 Gbps and 80 mW in EEE LPI state.
Typical applications include automotive infotainment Ethernet, ADAS camera links, in-vehicle networking backbones, industrial Ethernet switches, and any design requiring a 1 Gbps RGMII PHY qualified for harsh environments. Compared to consumer-grade KSZ9031RNX (standard QFN-48), the -VAO part uses wettable-flank leads for solder joint inspection.
When designing in, route the 125 MHz RGMII clock and data signals with matched impedance (typically 50 ohm SE) and length-matching to within the RGMII v2.0 spec (typically 50 mil tolerance on the PCB). Use a 25 MHz external crystal or 125 MHz LVCMOS reference; configure strap pins or MDIO registers for desired clock delay mode.
This page synthesizes distributor pricing, drop-in alternatives from the same KSZ9031 family and across brands, and practical PCB layout notes not always summarized in the manufacturer datasheet.
के लिए ड्रॉप-इन विकल्प KSZ9031RNXVB-VAO — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं KSZ9031RNXVB-VAO (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न Package, Cable Type, Product Type, Data Rate, MAC Interface.
KSZ9031RNXUB-VAO
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →KSZ9031RNXVC-VAO
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
KSZ9031RNXVB-VAO-TR
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
KSZ9031RNXCC
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →KSZ9031RNXIC
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →RTL8211F-CG
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
KSZ9031RNXVB-VAO विशेषताएं
| Product Type | Ethernet Transceiver (PHY) |
| डेटा दर | 10/100/1000 Mbps |
| Standards Compliance | IEEE 802.3 10BASE-T, 100BASE-TX, 1000BASE-T |
| MAC-Side Interface | RGMII (Version 2.0 compliant, on-chip delay) |
| सप्लाई वोल्टेज | 3.3 V (single supply; internal LDO for core) |
| MAC I/O Voltage Tolerance | 3.3 V / 2.5 V / 1.8 V |
| पैकेज | 48-pin WQFN (wettable-flank) |
| ऑपरेटिंग तापमान | -40C to +105C (AEC-Q100 Grade 2) |
| Automotive Qualification | AEC-Q100 qualified (VAO suffix) |
| Energy-Efficient Ethernet | IEEE 802.3az supported |
| Auto-Negotiation | Yes (with HP Auto-MDIX) |
| Wake-on-LAN | Supported |
| Loopback Modes | Remote and local loopback |
| Reference Clock | 25 MHz crystal or 125 MHz LVCMOS reference |
| Typical Active Power | 450 mW at 1 Gbps |
| माउंटिंग प्रकार | Surface Mount |
| Lead-Free / RoHS | Yes (lead-free) |
KSZ9031RNXVB-VAO 48-pin wqfn (wettable-flank) पिन कॉन्फ़िगरेशन गाइड
KSZ9031RNXVB-VAO (48-pin wqfn (wettable-flank) पैकेज) के लिए पिन कॉन्फ़िगरेशन। पिन नंबरिंग, फ़ंक्शन और कनेक्शन आरेख निर्माता डेटाशीट में परिभाषित हैं। सटीक फुटप्रिंट और सोल्डरिंग दिशानिर्देशों के लिए इसे देखें।
इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: KSZ9031RNXVB-VAO.
देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।
सामान्य अनुप्रयोग
KSZ9031RNXVB-VAO के लिए उपयुक्त है 6 अनुप्रयोगs: Automotive Infotainment Ethernet Backbone, ADAS Camera Ethernet Links, Industrial Gigabit Ethernet Switches, In-Vehicle Networking Gateway, Automotive Telematics and V2X Modems, Harsh-Environment IoT Edge Gateways.
Automotive Infotainment Ethernet Backbone
The KSZ9031RNXVB-VAO is engineered for automotive infotainment networks where it serves as the physical-layer interface between the head-unit SoC MAC and the vehicle's Ethernet backbone. Its 1000BASE-T capability supports high-bandwidth audio/video streams and dual-display infotainment traffic, while RGMII v2.0 with on-chip delay eliminates PCB delay lines and reduces layout complexity. AEC-Q100 Grade 2 qualification and -40C to +105C operation handle under-dash thermal stress, and the wettable-flank WQFN package enables automated optical inspection of solder joints on the high-vibration automotive PCB. Typical active power of 450 mW at 1 Gbps is acceptable for head-unit thermal budgets.
अनुशंसित
ADAS Camera Ethernet Links
In advanced driver-assistance systems (ADAS), the KSZ9031RNXVB-VAO provides the 1 Gbps physical link between surround-view, front-camera, and rear-camera serializers and the central ADAS ECU. Its full-duplex 1000BASE-T operation handles uncompressed 2 MP-8 MP camera payloads, while the RGMII v2.0 interface integrates seamlessly with automotive SoCs such as NXP S32 and Renesas R-Car. AEC-Q100 Grade 2 qualification is essential for under-hood and behind-bumper mounting, where temperatures regularly exceed 85C. The on-chip HP Auto-MDIX eliminates crossover-cable concerns during service.
अनुशंसित
Industrial Gigabit Ethernet Switches
The KSZ9031RNXVB-VAO serves as the uplink or stacking PHY in industrial managed Ethernet switches, providing a robust 1 Gbps copper port with extended-temperature operation. Its 3.3V/2.5V/1.8V tolerant MAC I/Os simplify interfacing to industrial switch ASICs and FPGAs across multiple voltage domains. Energy-Efficient Ethernet (IEEE 802.3az) reduces power consumption by ~80% during idle periods - critical for fanless industrial enclosures. Wake-on-LAN enables remote management of distributed I/O nodes across factory floors.
अनुशंसित
In-Vehicle Networking Gateway
The KSZ9031RNXVB-VAO functions as a port PHY on central gateways that bridge automotive Ethernet to CAN, LIN, and FlexRay networks. Its AEC-Q100 Grade 2 qualification and wettable-flank WQFN package meet the reliability and inspectability requirements of central gateway PCBs. RGMII v2.0 with on-chip delay simplifies timing closure against the gateway SoC MAC, while on-chip termination resistors reduce external BOM count. Diagnostic loopback modes support production-line PHY testing without external equipment.
अनुशंसित
Automotive Telematics and V2X Modems
The KSZ9031RNXVB-VAO provides the wired Ethernet backhaul for telematics control units and V2X (vehicle-to-everything) modems that require a reliable, automotive-qualified PHY. Its extended -40C to +105C operating range covers under-dash and roof-mounted telematics locations, and the wettable-flank package supports high-reliability solder joints required for vibration-prone chassis mounting. RGMII v2.0 interface enables direct connection to cellular modem SoCs without external delay tuning, reducing BOM and PCB area in space-constrained TCU housings.
अनुशंसित
Harsh-Environment IoT Edge Gateways
The KSZ9031RNXVB-VAO is well suited for ruggedized IoT edge gateways deployed in outdoor enclosures, factory floors, and railway signaling where temperature swings exceed commercial-grade limits. Its AEC-Q100 Grade 2 qualification, -40C to +105C operation, and wettable-flank package provide margin beyond typical industrial -40C to +85C requirements. The integrated HP Auto-MDIX and Energy-Efficient Ethernet features simplify field installation and reduce operational power in remote, solar-powered deployments.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा KSZ9031RNXVB-VAO — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | KSZ9031RNXUB-VAO | KSZ9031RNXVC-VAO | KSZ9031RNXCC | KSZ9031RNXIC | RTL8211F-CG |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Realtek |
| Package | 48-pin WQFN (wettable-flank) | 48-pin WQFN (wettable-flank) - same | 48-pin WQFN (wettable-flank) - same | 48-pin QFN - same footprint, no wettable flanks | 48-pin QFN - same footprint | 48-pin QFN - same footprint, no wettable flanks |
| MAC Interface | RGMII v2.0 (on-chip delay) | RGMII v2.0 (on-chip delay) | RGMII v2.0 (on-chip delay) | RGMII v2.0 (on-chip delay) | GMII/MII - NOT RGMII | RGMII (external delay typically required) |
| Automotive Grade (AEC-Q100) | Yes (Grade 2) | Yes (Grade 2) | Yes (Grade 2) | No (commercial) | No (commercial) | Yes (AEC-Q100) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C (AEC-Q100 variant) |
| Wettable-Flank Leads | Yes | Yes | Yes | No | No | No |
| Energy-Efficient Ethernet (IEEE 802.3az) | Yes | Yes | Yes | Yes | Yes | Yes |
| Typical Active Power (1 Gbps) | ~450 mW | ~450 mW | ~430 mW | ~450 mW | ~450 mW | ~400 mW |
| Source | web_data | web_data | web_data | web_data | web_data | web_data |
मुख्य विशेषताएँ
- AEC-Q100 Grade 2 qualification with wettable-flank WQFN package (बनामKSZ9031RNXCC)
- Native RGMII v2.0 on-chip TX/RX delay with programming options (बनामRTL8211F-CG)
- Newer silicon revision with improved power and EEE performance (बनामKSZ9031RNXUB-VAO)
डिज़ाइन नोट्स
Route the 125 MHz RGMII clock and the four-bit TX/RX data groups with controlled impedance (50 ohm SE typical) and length-match to within the RGMII v2.0 specification (typically 50 mil tolerance). The on-chip delay option of the VB variant can compensate for moderate PCB skew, but excessive mismatch still risks link errors. Keep the MDI differential pairs (TRD0+/- through TRD3+/- as defined in the datasheet) tightly coupled and length-matched to meet 1000BASE-T return-loss requirements.
Place the KSZ9031RNXVB-VAO's decoupling capacitors (typically 0.1 uF and 10 uF bulk) within 100 mil of the 3.3V supply pins. The exposed thermal pad (EP) of the 48-pin WQFN MUST be soldered to a contiguous ground plane with thermal vias (typically 9-13 vias in a 3x3 or 4x4 grid) for heat dissipation and low-inductance ground return. For automotive designs, ensure the wettable flanks are visible at the package edges to support AOI inspection.
Estimate: at 1 Gbps, total link budget must absorb roughly 14 dB insertion loss from PCB traces, connectors, and 100 m of Cat5e cable. Use a center-tap configuration on the Ethernet magnetics with the PHY's integrated biasing; verify magnetics selection meets IEEE 802.3 isolation and return-loss specs. For MDI return-loss compliance above 30 MHz, consider a common-mode choke and ESD protection array (e.g., integrated RJ45 with magnetics) at the connector.
Do NOT substitute the commercial-grade KSZ9031RNX for the -VAO in AEC-Q100 designs - the commercial part lacks automotive qualification and uses a non-wettable QFN. Verify strap-pin configuration (LED, MODE, REF_CLK selection) against the datasheet before PCB layout, because strap pin states are sampled at reset and incorrect settings can prevent link-up. Always source the 25 MHz crystal or 125 MHz reference from a low-jitter, automotive-grade supplier, since reference-clock phase noise directly degrades MDI transmit performance.
Estimate: at 1 Gbps active and 3.3V supply, the KSZ9031RNXVB-VAO draws approximately 136 mA (450 mW / 3.3V). In Energy-Efficient Ethernet (IEEE 802.3az) LPI state, current drops to roughly 25 mA. The internal LDO regulators generate the 1.2V core rail from the 3.3V supply - no external 1.2V rail is required, simplifying power architecture. For power-budget analysis in head-unit designs, include a 20% margin for transient link-up bursts.
अनुपालन जानकारी
AEC-Q100 Grade 2 automotive qualified per Microchip product page. RoHS and REACH compliant per third-party distributor data (etei.com). Lead-free and conflict-minerals-compliant per Microchip standard policy. Halogen-free status not specified in verified web data.
