Instruction manual

Renesas USB MCU and USB ASSP USB Basic Host and Peripheral firmware
R01AN0512EJ0210 Rev.2.10 Page 64 of 157
Apr 1, 2013
5. Low power mode
The low power mode may be specified as one of the following two options.
#define USB_CPU_LPW_PP USB_LPWR_USE_PP //Low Power Mode
#define USB_CPU_LPW_PP USB_LPWR_NOT_USE_PP //Not Low Power Mode
6. External bus operating voltage
The external bus operating voltage may be specified as one of the following two options.
(Used only by R8A66597/R8A66593)
#define USB_LDRVSEL USB_VIF1 ：1.8 V applied to external bus pins
#define USB_LDRVSEL USB_VIF3 ：3.3 V external bus pins
7. Resonator oscillation frequency
Oscillating frequency of connected resonator may be specified as one of the following three options.
(Used only by R8A66597/R8A66593)
#define USB_XINSEL USB_XTAL12 ：12 MHz resonator connected
#define USB_XINSEL USB_XTAL24 ：24 MHz resonator connected
#define USB_XINSEL USB_XTAL48 ：48 MHz resonator connected
8. Transfer speed
The target speed may be specified as either of the following two options.
(Used only by R8A66597/R8A66593)
#define USB_HSESEL USB_HS_ENABLE ：Use High-Speed
#define USB_HSESEL USB_HS_DISABLE ：Use Full-Speed