DP83848 10/100M Ethernet Port Project

4 years ago 5650
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Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver The DP83848C is a robust fully featured 10/100 single port Physical Layer device offering low power consumption, including several intelligent power down states. These low power modes increase overall product reliability due to decreased power dissipation. Supporting multiple intelligent power modes allows the application to use the absolute minimum amount of power needed for operation. The DP83848C includes a 25MHz clock out. This means that the application can be designed with a minimum of external parts, which in turn results in the lowest possible total cost of the solution. The DP83848C easily interfaces to twisted pair media via an external transformer. Both MII and RMII are supported ensuring ease and flexibility of design. The DP83848C features integrated sublayers to support both 10BASE-T and 100BASE-TX Ethernet protocols, which ensures compatibility and interoperabilitywith all other standards based Ethernet solutions.

Feature: Low-power 3.3V, 0.18µm CMOS technology Low power consumption < 270mW Typical 3.3V MAC Interface Auto-MDIX for 10/100 Mb/s Energy Detection Mode 25 MHz clock out Integrated ANSI X3.263 compliant TP-PMD physical sublayer with adaptive equalization and Baseline Wander compensation Programmable LED support Link, 10 /100 Mb/s Mode, Activity, and Collision Detect Single register access for complete PHY status 10/100 Mb/s packet BIST (Built in Self Test) MII Serial Management Interface (MDC and MDIO).


DP83848 Schematic

DP83848 PCB


ID Name Designator Footprint Quantity
1 DP83848I U1 LQFP48 1
2 1k R1,R2,R3,R4,R5,R6,R7,R8,R9,R11 C0805 10
3 XTALfast 1MHZ 1X02 1
4 20p C1,C2 C0805 2
5 1u C3,C4,C5,C6,C7,C8,C9,C10,C12,C13 C0805 10
6 SIP2 P1 HDR1X2 1
7 HDR2X10 P2 HDR2X10 1
9 1M R10 C0805 1
10 1u C11 C1 1
11 CON-RJ45-F ETH1 HR911105A 1




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