Instruction manual

Renesas USB MCU and USB ASSP USB Basic Host and Peripheral firmware
R01AN0512EJ0210 Rev.2.10 Page 61 of 157
Apr 1, 2013
Figure 4-1 shows the general flow of the initialization routine from reset state to static state.
Reset
PowerON_Reset_PC
usb_cstd_main_task
PowerON_Reset_PC
MCU initialization
Scheduler initialization
End
usb_cstd_main_task
usb_cstd_task_start
MCU initialization
USB module interrupt
initialization
DMA module interrupt
initialization
Evaluation board
circumference function
settings
End
End
usb_cstd_task_start
PDCD registration
USB module start
USB module operational
mode setup
PCD is registered into a
scheduler
PDCD is registered into a
scheduler
APL is registered into a
scheduler
usb_apl_task_switch
（Stationary state）
End
Figure 4-1 Peripheral Sample Program Intialization Overview