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PIC32MX575F512L-80V/PT 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
TQFP-100
描述:
RISC 80MHz 闪存：512K@x8bit
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PIC32MX575F512L-80V/PT数据手册
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PIC32MX6/7 family with embedded Ethernet
controller – PHY support
This document briefly explains how to add a new PHY to the MCHP TCPIP-BSD stack.
Note: The same approach applies to the MCHP TCPIP stack.
Table of Contents
Supported PHYs
How to add a new PHY
Supported PHY’s
• The PIC32MX6-7 families with embedded Ethernet controller have support for external
MII/RMII connected PHY’s. Currently we support:
o National DP83848 PHY.
o SMSC LAN 8700 PHY.
Support for other PHY's will be added in the future.
How to add a new PHY
Microchip provides a PHY interface library that is being used as part of the MAC driver for the
TCPIP stack.
The basic concepts behind this PHY library are:
1. Communication to the PHY is done using MIIM interface. For access to the external PHY
registers over the MIIM interface the communication functions provided by the Ethernet
Controller Peripheral Library are used (“..path\Microchip\MPLAB
C32\pic32mx\include\peripheral\eth.h”).
2. All PHYs support a standard set of registers with well known functionality. (As part of the
IEEE 802.3 Clause 22).
3. Few functions that are vendor specific have to be added for particular PHY’s.
The functions that the current TCPIP stack MAC driver uses for communicating and configuring
the external PHY are prototyped in
“..install path\Microchip\Include\TCPIP-BSD\eth_phy.h”
and implemented in the
“..install path\Microchip\TCPIP-BSD\eth_phy\eth_phy.c”.
To add support for a new PHY you have to add the implementation for the
following
4
functions (the prototypes of the functions are in
“..install path\Microchip\Include\TCPIP-BSD\eth_phy.h”):
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