参考手册里会区分HS和FS两个模式下的寄存器分布MAPFS模式下区分端点0和其他端点DIEPCTL0,DIEPCTLx(x=1..5)
HS模式下就只有DIEPCTLx(x=0..8),但寄存器注释The application uses this register to control the behavior of each logical endpoint other than endpoint 0.
看糊涂了,意思是高速模式下就没有配置端点0的DIEPCTL吗?
另外DIEPCTLx指的是IN 端点的配置,这一位注释是应用于IN/OUT端点,是不是错了?
Bit 29 SODDFRM: Set odd frameApplies to isochronous IN and OUT endpoints only.
Writing to this field sets the Even/Odd frame (EONUM) field to odd frame. |