TYPE-C的E-MARK 芯片

USB Type-CPINGJIEQIZISHENQIANGDADEGONGNENG,ZAIApple, Intel, GoogleDENGCHANGSHANGDEQIANGSHITUIDONGXIA,BIJIANGXUNSUYINFAYICHANGUSBJIEKOUDEGEMING,BINGJIANGJIJIYINGXIANGWOMENRICHANGSHENGHUODEFANGFANGMIANMIAN,TYPE CZUOWEIXINYIDAIWULIJIEKOUBIAOZHUN,XIANZAIHUOBANMENYIQI,JINGCHANGHUITAOLUNYIGEWENTI,USB Type-CDESHEBEIDAODISHIFOUXUYAOCCLUOJIJIANCEYUKONGZHIE-MARKXINPIAN,HAIYOUHENDUOHUOBANHUIWENDAO,WOMENSHUODETYPE-CDAIE-MARK XINPIANYOUJIUJINGSHIGESHENMEWANYI?

正方观点:如果连接一个简单的适配器,一个U盘,一个鼠标,都要带上TYPE-C芯片,是否多此一举.

反方观点:作为新一代的物理接口标准,TYPE-C要体现与众不同的高端大气上档次,必须所有的USB PD角色定义和角色切换,都通过USB TYPE-C 协议中的CC逻辑及通讯来实现.

TYPE-CDEE-MARK XINPIANSHIGESHENMEGUI

☞E-Marker芯片的使用场景
USBType-C规范定义了各类USB Type-C线缆:

QUANGONGNENGDEUSB Type-CXIANLAN:YIZHONGZHICHIUSB 2.0HEUSB3.1SHUJUCHUANSHUDEUSB Type-CDAOType-CLEIXINGDEXIANLAN

USB 2.0 Type-CXIANLAN: LIANGDUANDAIYOUUSB2.0 Type-CGONGTOUDEUSB 2.0 Type-CXIANLAN,SHIYONGYUUSB2.0

GUDINGSHIType-CXIANLAN:YIDUANDAIYOUQUANGONGNENGDEUSB Type-CGONGTOUHUOUSB2.0 Type-CGONGTOUDEGUDINGSHIType-CXIANLAN(CaptiveCable)

☞下图列出了需要带E-Marker芯片的线缆类型:

SHUNBIANSHUOYIXIA,ZAIPD3.0GUIFANZHONGSHANCHULEFSKDETONGXUNFANGSHI。YUANXIANZAIPD2.0GUIFANDINGYIDEUSB Type-CGONGTOULIANJIEUSB Type-AHUOZHEUSB Type-BYONGDAOE-MarkerDECHANGJINGBUZAICUNZAI。

USB2.0 5A线缆的Type-C公头PCB设计要点
带E-Marker芯片的USB2.0出线可以分为三类,总共六根线:

USB2.0SHUJUXIAND+/D-

Type-CTONGXUNXIANCCHEVCONN

DIANYUANJIDI,CHUANSHU5ADIANLIU

YOUXIEXIANLANBUCHUANSHUUSB2.0DESHUJU,ZHIYAOCHUANSHU5ADIANLIUJIKE。ZHEIYANGDEXIANLANDECHUXIANZHIYAOVBUS、GND、CCHEVCONNGONG4GENXIANJIKE.

☞USB2.0, 5A的Type-C公头PCB设计要点:

CAIYONGPUTONGDEFR4CAIZHIDEPCBCAILIAOJIKE,JIANYICAIYONGSICENGPCB,MANZU5ADIANLIUCHUANSHUDENGJI。NEICENGDEDIERCENGHEDISANCENGFENBIEZOUVBUSHEGND。

GENJUGONGTOUDEGUIGE,PCBHOUDUJIGONGCHAMANZUSHEJIYAOQIU

TopCENGCHUXIAN,E-MarkerXINPIANJIZURONGQIJIANJUNFANGZAIBottomDICENG。E-MarkerXINPIANJINLIANGXUANZECHICUN、GUANJIANJUDADEFENGZHUANGE-MarkerXINPIAN,RU2mm x 2mm DFN-6LFENGZHUANG。

JIANYICAIYONGGONGBANSHEJI,YEJIUSHIDAIE-MarkerDUANHEBUDAIE-MarkerDUANCAIYONGTONGYITAOPCBSHEJI,GENJUBOMJINXINGXUANHAN。

D+/D-ZOUXIANKAOLVZUKANGPIPEI,PINGXING、DENGZHANGZOUXIAN。

KONGZHIPCBDEZHANGDUHEKUANDU,TUIJIANCHICUNWEI8.4mmx 6mm

☞USB3.1线缆的Type-C公头PCB设计要点
带E-Marker芯片的USB3.1出线可以分为三类,总共16线:

USB3.1DEGAOSUSHUJUXIANTX1+/TX1-,RX1+/RX1-,TX2+/TX2-,RX2+/RX2-

USB2.0SHUJUXIAND+/D-

Type-CTONGXUNXIANCCHEVCONN

BIANDAIXINHAOSBU1/SBU2

DIANYUANJIDI

USB3.1XIANLANFENTONGZHOUXIANHESHUANGJIAOXIANLIANGZHONG,SHUANGJIAOXIANDESHIJICHUXIANSHULIANGZHISHAOSHI16GEN,TONGZHOUXIANZAISHUANGJIAOXIANDEJICHUSHANG,XUYAOZENGJIA4GENZUOYOUDEGNDCHUXIAN,YONGYUSHIXIANTONGZHOUXIANDEPINGBI.

USB3.1SHUJUBIAOZHUNCAIYONGDEGAOSULVYIJINGJINRUDAOWEIBOLINGYU,TONGGUOLIANJIEQIHEXIANLANCHUANSHURUCIGAODESULVBIXUKAOLVTONGDAODEBULIANXUXINGYINQIDESHIZHEN,WEILEJIANGSHIZHENCHENGDUBAOCHIZAIYIGEKEKONGDESHUIPING,BIAOZHUNGUIDINGLEXIANLANHELIANJIEQIDUIDEZUKANGHEHUIBOSUNHAODENGZHIBIAO。ZAICESHIXIANGMUSHANGYEBAOHANLEImpedance(TEXINGZUKANG)、Propagation Delay(CHUANSHUYANCHI)、PropagationSkew(CHUANSHUSHIZHI)、Attenuation(SHUAIJIAN)、Crosstalk(CHUANYIN)DENGCESHIXIANGMU。

☞USB3.1的Type-C公头PCB设计要点:
选用高频、高性能的PCB板材,建议采用六层PCB。少数厂家可以用4层PCB达到10GHz认证要求。建议内层的第二层和第五层分别走GND,GND,VBUS和GND。

GENJUGONGTOUDEGUIGE,PCBHOUDUJIGONGCHAMANZUSHEJIYAOQIU。

E-MarkerXINPIANJIZURONGQIJIANJUNFANGZAIBottomDICENG。E-MarkerXINPIANJINLIANGXUANZECHICUN、GUANJIANJUDADEFENGZHUANGE-MarkerXINPIAN,RU2mm x 2mm DFN-6LFENGZHUANG。

JIANYICAIYONGGONGBANSHEJI,YEJIUSHIDAIE-MarkerDUANHEBUDAIE-MarkerDUANCAIYONGTONGYITAOPCBSHEJI,GENJUBOMJINXINGXUANHAN。

GAOSUXINHAOXIANDEZOUXIANYAOFEICHANGXIAOXIN,ZOUXIANKAOLVZUKANGPIPEI,PINGXING、DENGZHANGZOUXIAN,CHONGFENKAOLVFANGCHUANRAO。JINLIANGSHAODAGUOKONG。JIANYICHAFENZUKANG85Ohm+-5Ohm。

D+/D-ZOUXIANKAOLVZUKANGPIPEI,PINGXING、DENGZHANGZOUXIAN。

KONGZHIPCBDEZHANGDUHEKUANDU。

XUYAOSHEJIXIANJIAWEIZHI,GUDINGJIEXIAN,FANGBIANJIAGONG

使用E-mark第一原则:如果您希望通过USB TYPE-C接口来提供超过5V的电压,或者是超过3A的电流,那么一定需要TYPE-C接口芯片去实现USB PD协议.

使用E-mark第二原则:如果您的设备使用5V电压,并且不超过3A的电流。那就要看设备本身的供电特性和数据传输特性,如果设备本身只往外供电,或者只接受对方供电,并且供电角色与数据传输角色为默认搭配(即供电方为HOST,用电方为Slave或者device),那么你不需要TYPE-C芯片.

使用E-mark第三原则:这两个原则是用来判断设备上是否需要TYPE-C芯片,另外一点很受关注的C-C传输线上是否需要用到E-MARKER芯片,这个判断标准是,使用过程中,电流是否会超过3A?如果不超过,则可以不需要, A to C, B to C的线,则看是否需要实现Battery Charging协议,如果要实现,则可以使用LDR6013,带来的好处是,既能够实现充电,又能够传输数据,避免某些不遵守Battery Charging协议的适配器无法给苹果设备充电的问题

DIYI、YONGDIANFANGJIDeviceZHEIDUAN,YONGLIANGGE5.1KXIALADIANZU,FENBIELIANJIEDAOCKOUMUZUODECC1HECC2SHANG。RUGUOXUYAOPANBIECHARUFANGXIANG,ZEYONGYIGEBIJIAOQI,DUILIANGGEDIANZUSHANGDEDIANYAJINXINGBIJIAO(RUGUOSHIYOUCHULIQIDEXITONG,ZEKEYIYONGADCQUPANDUAN),BIJIAOJIEGUOJIWEIFANGXIANG.

DIER、GONGDIANFANGHUOZHESHUOHOSTZHEIDUAN(GONGDIANDIANYAWEI5V)。YONGLIANGGE10KDESHANGLADIANZUFENBIEDUICKOUMUZUODECC1HECC2JINXINGSHANGLA。RUGUOXUYAOPANBIECHARUFANGXIANGDE,ZEYONGYIGEBIJIAOQI,DUILIANGGEDIANZUSHANGDEDIANYAJINXINGBIJIAO(RUGUOSHIYOUCHULIQIDEXITONG,ZEKEYIYONGADCQUPANDUAN),BIJIAOJIEGUOJIWEIFANGXIANG.

DISAN、RUGUOYAOGUOUSB-IFRENZHENG,NEIME,CHULENEIZHONGZAISHIPEIQISHANGZHIJIESHENCHULAIBUKEBACHUDEUSBGONGTOUSHUCHUXIANZHIZHIWAI,QITADFPYINGYONGDOUGUAIGUAIDEJIASHANGUSB TYPE-CXINPIAN,RUGUOBUXUYAORENZHENG,KANZHEBANBA,TONGYANGDOUNENGGOUYONGDEQINGKUANGXIA,SHICHANGHUIJUEDINGYIQIEDE.

MUQIAN,KANDEDAODEBIXUYAOYONGTYPE-CXINPIANDEYINGYONG,BAOKUO:BIJIBENDIANNAO,SHOUJI,PINGBAN,YIDONGDIANYUAN,ZHICHIGAOYAKUAICHONGDESHIPEIQI.

YISHANGJINGONGCANKAO,TEBIESHIZONGXIANSHANG5VCHONGTUDEBUFEN,WOZHISUOYIGANTUIJIANBUYONGXINPIAN,NEISHIYINWEIJISHIYONGLE,YEHENNANBIMIANBUCHONGTU,TEBIESHILIANGGEDRP,LIANGGETRY.SRCSHEBEIXIANGLIAN,BINGQIEWAIWEICUNZAIGANRAODEQINGKUANGXIA。ZAIType-CSHIDAI,SUOYOUDESHEJI,DOUBIXUYAOYINGDUIZONGXIANSHANGDEVBUSDIANYACHONGTUDEQINGKUANG。JIRANDOUBIXUFANGCHONGTU,NEIZIRANJIUKEYIBUYONGLE.

☞附上基础知识:

■YUUSB TYPE-CWULIJIEKOUXIANGGUANDEBIAOZHUNYIGONGYOUSANGE:USB Type-C 1.1, USB PD 2.0, Battery Charging 1.2,RUGUO3GEXIEYIQUANBUZHICHI,ZEKEYISHIXIANType-CDESUOYOUYOUSHITEXING.

■Type-CBASHEBEIDEJIAOSEZAIGONGDIANHESHUJUCHUANSHUSHANGJINXINGLEFENLI,DIANNENGCHUANSHUSHANGFENWEISRC(JIGONGDIANFANG,LIRUSHIPEIQI),SNK(JISHOUDIANFANG,LIRUUPAN).

■DUIYUJINENGGOUCHENGDANSRCJIAOSE,YOUNENGGOUCHENGDANSNKJIAOSEDESHEBEI,ZECHENGWEIDRPSHEBEI(LIRUBIJIBENDIANNAOHESHOUJI)。ZAIDRPSHEBEIZHONG.

■YOUYILEITEBIEQINGXIANGYUCHENGWEISRCSHEBEIDEDevice,CHENGWEITry.SRCSHEBEI(LIRUYIDONGDIANYUAN).

■SHUJUCHUANSHUJIAOSESHANG,FENWEIDFP(JICHUANTONGDEHOST)HEUFP(JICHUANTONGDEDeviceHUOZHESlave)MORENQINGKUANGXIA,SRCJIWEIDFP,SNKJIWEIUFP.

■RUGUOYAOGAIBIANZHEIZHONGMORENDEDAPEI,ZEYAOSHIYONGUSB PD 2.0TONGXINXIEYIJINXINGROLE_SWAP,SUOYOUZHEIXIEJIAOSEDINGYIJIJIAOSEQIEHUAN,DOUSHITONGGUOUSB TYPE-CXIEYIZHONGDECCLUOJIJITONGXINLAISHIXIANDE.

DONGGUANLINQUANDIANZIKEJIYOUXIANGONGSICHENGLIYU2011NIAN9YUE。GONGSIZUOLUOYULISHIWENHUAMINGCHENGGUANGDONGSHENGDONGGUANSHIHUMENZHEN。ZHUYAOJINGYINGJINGMIDIANZILIANJIEQI、QICHELIANJIEQI、YILIAOQICAIDENGCHANPINDEYANFAYUZHIZAOJIMOJUSHEJIYUZHIZAO、CHONGYA、ZHUSUJILIANJIEQIZUZHUANGYITIHUAFUWU.GONGSICHENDIANLEYIPIZHUANYEHUAZISHENSHEJIYUSHENGCHANTUANDUI,YIJINGQUDELEISO 9001,ISO 14001JITS 16949ZHILIANGGUANLITIXIRENZHENG。

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