The Host Controller (HC) contains a set of on-chip operational registers which are mapped into a noncacheable portion of the system addressable space . These registers are used...
7.2.1 HcHCCA Register HcHCCA寄存器 寄存器位布局 寄存器字段说明 关键说明: 7.2.1 HcHCCA Register The HcHCCA register contains the physical address of the Host Controller Communication Area. The ...
HCR CLF BLF bit[3] OCR SOC The HcCommandStatus register is used by the Host Controller to receive commands issued by the Host Controller Driver, as well as reflecting the cur...
An Endpoint Descriptor (ED) is a 16-byte, memory resident structure that must be aligned to a 16-byte boundary . The Host Controller traverses lists of EDs and if there are TDs lin...
图7-19:HcRhDescriptorA寄存器 寄存器位布局(31:0) 字段功能说明 The HcRhDescriptorA register is the first register of two describing the characteristics of the Root Hub. Reset values are implemen...