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应用笔记

W5100S使用FSMC总线方式解析

更新时间:2019-05-25 阅览次数: 908

W5100S简介

W5100SSHIYIKUANDUOGONGNENGDEDANXINPIANWANGLUOJIEKOUXINPIAN,NEIBUJICHENGQUANYINGJIANDETCP/IPXIEYIZHAN,YITAIWANGMACHE10Base-T/100Base-TXYITAIWANGKONGZHIQI。ZHUYAOYINGYONGYUGAOJICHENG、GAOWENDING、GAOXINGNENGHEDICHENGBENDEQIANRUSHIXITONGZHONGSHIYONGW5100S,YONGHUMCUKEYIFANGBIANDECHULIIPv4,TCP,UDP,ICMP,IGMP,ARP,PPPoEDENGGEZHONGTCP/IPXIEYI。W5100SFENBIEYONGYOU8KBDEFASONGHUANCUNHEJIESHOUHUANCUN,KEYIZUIDAXIANDUDIJIANSHAOMCUDEKAIXIAO。ZHUJIHAIKEYITONGSHISHIYONGW5100SDE4GEDULIDEYINGJIANSOCKETs,BINGJIYUMEIGEYINGJIANSOCKETKAIFADULIDEHULIANWANGYINGYONG。

W5100SZHICHISPIJIEKOUHEBINGXINGXITONGZONGXIANJIEKOU。 TAHAITIGONGDIGONGHAO/DIRELIANGSHEJI,WOL(Wake On LAN),YITAIWANGPHYDIAODIANMOSHIDENG。

W5100SSHIJIYUW5100GAIJINDEDICHENGBENWANGLUOJIEKOUXINPIAN。W5100SHIYONGDERENHEGUJIANJICHENGXUDOUKEYIZHIJIEZAIW5100SSHANGSHIYONG,WUXURENHEXIUGAI。 CIWAI,W5100SCAIYONG48YINJIAOLQFPHEQFNWUQIANFENGZHUANG,MINGXIANXIAOYUW5100DE80YINJIAOFENGZHUANG,FANGBIANCHANPINXIAOXINGHUA

W5100S总线方式

微信图片_20190525135219.jpg

W5100SLIANJIEDEMCUXINGHAOSHISTM32F103VCT6。(YIXIAJIANCHENGSTM32)

STM32YUW5100SCAIYONGJIANJIEZONGXIANDETONGXINFANGSHI。BINGXINGJIEKOUTONGGUOXIABIAOZHONGDEJICUNQIFANGWENTONGYONGJICUNQI/SOCKETJICUNQI,TX/RXSHUJUHUANCHONGQU。BINGZHICHIDUOZIJIESHUJUDESHUNXUDUXIE

BIAO JIANJIEMOSHIDIZHIZHI

ADDR[1:0]

符号描述

00

MR通用寄存器MR

01

IDM_ARH高8位偏移地址寄存器

10

IDM_ARL低8位偏移地址寄存器

11

IDM_DR8位数据寄存器

并行总线数据写入,多字节数据写入时序,如下图所示:


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JIANJIEMOSHILIANXUXIERU

BINGXINGZONGXIANSHUJUDUQU,DUOZIJIESHUJUDUQUSHIXU,RUXIATUSUOSHI:

微信图片_20190525135219.jpg

JIANJIEMOSHILIANXUDUQU

FSMC简介

FSMCBAOHANSIGEZHUYAOMOKUAI:

● AHBJIEKOU(BAOHANFSMCPEIZHIJICUNQI)

● NORSHANCUNHEPSRAMKONGZHIQI

● NANDSHANCUNHEPCKAKONGZHIQI

● WAIBUSHEBEIJIEKOU

微信图片_20190525135219.jpg

W5100S如何使用FSMC总线

STM32的FSMC支持数据与地址线 复用 或 非复用两种模式:

FEIFUYONGMOSHI:16WEISHUJUXIANJI26WEIDIZHIXIANFENKAISHIYONG。ZHINENGZAI144JIAOJIYISHANGDESTM32SHANGSHIYONGGAIMOSHI。

FUYONGMOSHI:DI16WEISHUJU/DIZHIXIANFUYONG。ZAIGAIMOSHIXIA,SHIYONGDIZHISUOCUNQIYIQUFENSHUJUYUDIZHI。

ZAIFUYONGMOSHIXIA,RUOBUSHIYONGSUOCUNQI,DANGNADVWEIDISHI,ADx(x=0…15)SHANGCHUXIANDIZHIXINHAOAx,DANGNADVBIANGAOSHI,ADxSHANGCHUXIANSHUJUXINHAODx;RUOSHIYONGSUOCUNQI:KETONGSHIZAIADxSHANGDEDAOAxHEDx。

FSMCZHONGWEISHIYONGDESHUJUXIANHUODIZHIXIANKEPEIZHIWEIGPIO。DUIYU16WEIKUANDUDEWAIBUCUNCHUQI,FSMCJIANGZAINEIBUSHIYONGHADDR[25:1]CHANSHENGWAIBUCUNCHUQIDEDIZHIFSMC_A[24:0]。YINCI,SHIJIDEFANGWENDIZHIWEIYOUYIYIWEIZHIHOUDEDIZHI。

非复用模式的非复用接口:

微信图片_20190525135219.jpg

FEIFUYONGJIEKOU

复用模式的复用接口:

微信图片_20190525135219.jpg

FUYONGJIEKOU

W5100SSHIYONGFSMCZONGXIANDEFUYONGMOSHI(MUXEN),W5100SZHIJIEYUFSMCZONGXIANDEFUYONGYINJIAOAD0~AD1XIANGLIAN,BUXUYAOZENGJIAWAIBUQIJIAN。RUXIATUSUOSHI:

微信图片_20190525135219.jpg

GENJUSHANGTUSUOSHI:DANGGAIWEIWEI‘0’SHI,ZEWEIFEIFUYONGMOSHI;DANGGAIWEIWEI‘1’SHI,ZEWEIFUYONGMOSHI。

YIXIASHIJIESHAOW5100SSHIYONGFSMCZONGXIANDEFUYONGMOSHI:(WIZnetGUANFANGSHIYONGFSMCFUYONGMOSHI)

W5100SYUSTM32TONGXINCAIYONGFSMCZONGXIANFANGSHIDEFUYONGMOSHI,RUYUANLITUSUOSHI,ZAISHUJUCHUANSHUSHIXUYAOBAOCUNDA0、DA1DIZHIBUBIAN,SUOYIXUYAOWAIBULIANJIEYIGESUOCUNQI,SHIYONGLE74HC573PWZUOWEIDIZHISUOCUNQI,RUFSMCDEDUXIESHUJUSHIXUTUSUOSHI,STM32DEFSMC_NADVSHIDIDIANPINGSHUCHUDIZHI,YINWEISUOCUNQIGAODIANPINGSHURUYOUXIAO,SUOYIJIANGFSMC_NADVXINHAOJINXINGFANZHUAN,YOUDIDIANPINGZHUANHUANCHENGGAODIANPING,TONGGUOSUOCUNQISHIXIANDIZHISUOCUN。

微信图片_20190525135219.jpg

DIZHISUOCUNYUANLITU

微信图片_20190525135219.jpg

FSMC_NADVXINHAOXIESHUJUSHIXUTU

微信图片_20190525135219.jpg

FSMC_NADVXINHAODUSHUJUSHIXUTU