DM9162 - 10/100 Mbps Fast Ethernet PHY Transceiver | Davicom
N.º de pieza: DM9162 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.5448 | $1,54 |
| 10 | $1.4 | $14,00 |
| 100 | $1.2 | $120,00 |
| 500 | $1.05 | $525,00 |
| 1.000 | $0.92 | $920,00 |
DM9162 Descripción general
A Fast Ethernet PHY transceiver is a Physical Layer device that sits between a Media Access Controller (MAC) and the copper or fiber medium. Within the OSI model, the PHY converts digital MAC data into analog signals for the line (10BASE-T Manchester / 100BASE-TX MLT-3) and recovers clock and data on the receive side. The DM9162 belongs to the broader product hierarchy of Ethernet transceivers > 10/100 PHYs > Physical Layer devices > network Interface ICs > wired-connectivity semiconductors. It is typically used alongside an Ethernet MAC controller, an isolation transformer, and an RJ45 jack to form the complete 10/100 Ethernet port of an embedded system.
Key features include support for both MII (Media Independent Interface, 18 signals at 25 MHz) and RMII (Reduced MII, 9 signals at 50 MHz), where the DM9162 provides a 50 MHz reference clock out at RMII to reduce BOM cost. Power reduction modes include automatic power saving on idle link, software power-down, and an isolation/transmission stand-by pin. The DM9162 is qualified for industrial temperature operation -40 °C to +85 °C, uses a 0.162 µm CMOS process, and supports both full-duplex flow control (IEEE 802.3x PAUSE) and half-duplex back-pressure.
Typical applications include industrial Ethernet nodes, IP cameras, set-top box Ethernet ports, smart-grid metering, building-automation gateways, factory-automation controllers, and consumer electronics with embedded LAN. The fiber-mode (100BASE-FX) support also makes it a drop-in choice for legacy fiber-to-copper media conversion designs.
When designing with the DM9162, place the 50 ohm TX/RX termination networks within 5 mm of the magnetics, keep MII/RMII traces length-matched to within 50 mil, and provide a bulk 10 µF plus 0.1 µF bypass pair adjacent to each VDD pin. Use a center-tap configuration with 1:1 turns-ratio isolation transformers and route TX+/TX- and RX+/RX- as 100 ohm differential pairs. Always assert the reset line for at least 100 µs after 3.3V stable to guarantee proper PLL lock.
Alternativas directas para DM9162 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DM9162IEP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DM9162EP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DM9162I
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DM9162 Especificaciones
| Función | 10/100 Mbps Ethernet PHY Transceiver |
| Standards Supported | IEEE 802.3 10BASE-T, 100BASE-TX, 100BASE-FX |
| MAC Interface | MII and RMII (selectable) |
| Management Interface | MDIO (IEEE 802.3 clause-22) |
| Tensión de alimentación | 3.3 V (typical) |
| Typical Operating Current | 90 mA (PHY only) |
| Current with Transformer | 40 mA additional |
| Process Technology | 0.162 µm CMOS |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C (industrial grade DM9162IEP) |
| Encapsulado | LQFP-48 (DM9162IEP) / QFN-32 (DM9162EP) |
| Auto-Negotiation | Yes (10/100 full and half duplex) |
| Auto-Crossover | Yes (HP Auto-MDIX-style) |
| RMII Clock Output | 50 MHz (saves external oscillator) |
| Flow Control | IEEE 802.3x full-duplex PAUSE + half-duplex back-pressure |
| Estado RoHS | Compliant |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de DM9162 lqfp-48 (dm9162iep) / qfn-32 (dm9162ep)
Configuración de pines para DM9162 (encapsulado lqfp-48 (dm9162iep) / qfn-32 (dm9162ep)). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para DM9162.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
DM9162 es adecuado para 7 aplicacións: Industrial Ethernet Nodes and PLCs, IP Surveillance Cameras and NVRs, Set-Top Box and Smart TV Ethernet, Smart Grid and Energy Metering, Building-Automation Gateways, Fiber/Copper Media Converters (100BASE-FX), Consumer Router and Gateway LAN Ports.
Industrial Ethernet Nodes and PLCs
The DM9162's industrial -40°C to +85°C temperature range and 90 mA typical operating current make it ideal for factory-automation PLCs and industrial Ethernet nodes. Its 3.3V single-rail supply simplifies design in 24V-to-3.3V industrial systems, and the integrated MDIO (clause-22) interface lets the host MCU diagnose link speed, duplex, and PHY-ID without glue logic. Auto-negotiation between 10/100 Mbps and auto-crossover reduce wiring mistakes in field installations. Placed between the MAC and the RJ45 magnetics, the DM9162IEP enables deterministic 100 Mbps full-duplex links in industrial Ethernet star and daisy-chain topologies.
Recomendado
IP Surveillance Cameras and NVRs
The DM9162's 100BASE-TX full-duplex capability with 802.3x flow control delivers sustained 100 Mbps throughput required for 1080p/4K IP camera streaming. Its low 90 mA operating current and small LQFP-48 footprint suit compact camera PCBs where thermal and area budget are tight. RMII mode with on-chip 50 MHz clock output removes an external crystal and lowers BOM cost. The 100BASE-FX option also enables fiber-based surveillance backhauls. Connect DM9162 to a HiSilicon, Novatek, or Ambarella video SoC MAC over MII/RMII for power-over-Ethernet IP cameras and NVRs.
Recomendado
Set-Top Box and Smart TV Ethernet
Consumer set-top boxes and smart TVs commonly use the DM9162 for the integrated RJ45 LAN port because of its low 0.162 µm CMOS process cost, small LQFP-48 outline, and 50 MHz RMII clock output that shares the Ethernet PHY's clock with the SoC. The PHY's auto-crossover eliminates the need for manual MDI/MDIX jumpers and reduces OEM assembly defects. Its 3.3V supply and 90 mA current fit comfortably within set-top box power budgets. Pair the DM9162 with a Realtek RTD series or Broadcom STB SoC MAC over RMII to add reliable 100 Mbps IPTV connectivity.
Recomendado
Smart Grid and Energy Metering
Smart electricity meters and concentrator units leverage the DM9162IEP's industrial -40°C to +85°C qualification and 100BASE-TX throughput for AMI (Advanced Metering Infrastructure) backhaul. The integrated auto-negotiation handles varying link-partner capabilities across heterogeneous metering networks, while hardware flow control prevents packet loss during demand-response bursts. Its 90 mA typical current fits the tight consumption budget of battery-backed or auxiliary-powered meter designs, and the LQFP-48 footprint eases hand-solder rework during R&D. Combine DM9162IEP with a low-power metering MCU + metering AFE for the complete metering block.
Recomendado
Building-Automation Gateways
KNX, BACnet, and LonWorks-to-IP building-automation gateways often embed the DM9162 for the LAN port, leveraging its compact LQFP-48 package, integrated auto-crossover to simplify wall-plate wiring, and industrial -40°C to +85°C temperature range to handle plant-room thermal conditions. The 50 MHz RMII clock output lets the gateway SoC run without a separate Ethernet crystal, shrinking BOM by $0.10-$0.20 in cost-sensitive high-volume designs. Use the DM9162 RMII bus to a Cortex-M host for BACnet/IP and MQTT-over-TLS bridges between legacy field buses and modern IP networks.
Recomendado
Fiber/Copper Media Converters (100BASE-FX)
Industrial copper-to-fiber media converters and legacy fiber links use the DM9162's integrated 100BASE-FX mode, eliminating a separate fiber-PHY chip and shrinking BOM. With 3.3V single-supply operation and 90 mA typical current, the DM9162 fits standalone media-converter housings without active cooling. Auto-negotiation and auto-crossover between the copper RJ45 and the fiber SC port happen transparently at the MAC. Use DM9162 alongside a 100BASE-FX transceiver or fiber SFP cage to convert legacy FDDI or 100FX fiber runs to modern copper Ethernet without a full system redesign.
Recomendado
Consumer Router and Gateway LAN Ports
Low-cost consumer routers and home gateways often integrate the DM9162 as the LAN-side 10/100 PHY because of its competitive sub-$1.50 unit price at quantity-100 and its 50 MHz RMII clock output that replaces an extra crystal. The 0.162 µm process, 3.3V single-supply rail, and integrated PCS/PMA simplify PCB layout and lower BOM cost versus competing PHYs. Auto-crossover and auto-polarity correction reduce cable-related support calls. Pair DM9162 over RMII with a MediaTek MT7621 or Realtek RTL8197F home-gateway SoC to add the four LAN ports typical of consumer WiFi routers.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DM9162 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DM9162IEP | DM9162EP | DM9162I |
|---|---|---|---|---|
| Brand | Davicom Semiconductor | Davicom Semiconductor | Davicom Semiconductor | Davicom Semiconductor |
| Package | LQFP-48 | LQFP-48 - same | QFN-32 - different package, same die | LQFP-48 - same |
| Function | 10/100 Mbps Ethernet PHY | 10/100 Mbps Ethernet PHY | 10/100 Mbps Ethernet PHY | 10/100 Mbps Ethernet PHY |
| MAC Interface | MII / RMII | MII / RMII | MII / RMII | MII / RMII |
| Management | MDIO clause-22 | MDIO clause-22 | MDIO clause-22 | MDIO clause-22 |
| Operating Temperature | 0 to +70 °C (commercial) / -40 to +85 °C (I variant) | -40 to +85 °C (industrial) | Commercial (check datasheet) | -40 to +85 °C (industrial) |
| 100BASE-FX Support | Yes | Yes | Yes | Yes |
| Process Technology | 0.162 µm CMOS | 0.162 µm CMOS | 0.162 µm CMOS | 0.162 µm CMOS |
| Backward Compatibility | Replaces DM9161C, backward compatible to DM9161A | Yes, same as DM9162 | Yes (different package only) | Yes, same LQFP-48 |
Diferenciadores clave
- Only Davicom 10/100 PHY family available in BOTH LQFP-48 and QFN-32 (frente a KSZ8041)
- Integrated 50 MHz RMII clock output (frente a RTL8201F)
- Backward-compatible upgrade path from DM9161A/DM9161C (frente a KSZ8041 / RTL8201F)
Notas de diseño
DM9162 layout must keep the TX/RX differential pairs as 100 ohm-controlled-impedance traces, length-matched to within 50 mil on each pair, and routed within 5 mm of the magnetics for EMI compliance. MII/RMII bus traces should be length-matched to within 500 mil to keep skew under 250 ps at 50 MHz RMII. Place the bulk 10 µF plus 0.1 µF bypass pair within 2 mm of every VDD pin, and provide a solid ground plane under the whole PHY region.
Estimated: at 3.3V and 90 mA typical operating current the DM9162 consumes about 0.30 W. Add another 0.13 W for the 40 mA transformer bias to give a 0.43 W total. Use a ferrite-bead plus 10 µF bulk filter on the AVDD/VDDCO rails feeding the analog and clock domains, and a separate 0.1 µF cap on every digital VDD pin to isolate digital switching noise from the analog PLL.
Common pitfalls with DM9162 include: (1) forgetting to assert RESET high for at least 100 µs after 3.3V is stable, which prevents PLL lock and shows as an absent LINK LED; (2) selecting MII mode but leaving the 25 MHz reference clock pin floating, which corrupts TX data; (3) omitting the center-tap capacitor on the RJ45 magnetics, leading to excessive EMI in radiated emissions testing at 125 MHz; (4) using 50 ohm single-ended termination instead of 100 ohm differential on TX/RX pairs.
Información de cumplimiento
RoHS compliance inferred from Davicom product page; other compliance items not stated in the provided data.
