Instruction manual

Renesas USB MCU and USB ASSP USB Basic Host and Peripheral firmware
R01AN0512EJ0210 Rev.2.10 Page 70 of 157
Apr 1, 2013
5.2.1 USB Standard Requests
MGR enumerates connected devices. The USB standard requests issued by MGR are listed below. The descriptor
information obtained from a device is stored temporarily, and this information can be fetched by using the HCD API
function.
・ GET_DESCRIPTOR (Device Descriptor)
・ SET_ADDRESS
・ GET_DESCRIPTOR (Configuration Descriptor)
・ SET_CONFIGURATION
The BasicFW only covers these standard requests, which are always used at time of enumeration.
5.2.2 Checking of HDCD
MGR notifies HDCD of the information obtained during enumeration by using the GET_DESCRIPTOR request and
checks whether the connected device is ready to operate.
HDCD replies device condition by R_usb_hstd_ReturnEnuMGR() function.