+
+ /* Switch USB PLL source to system osc so we can power down the IRC */
+ lpc_scb.usbpllclksel = (LPC_SCB_USBPLLCLKSEL_SEL_SYSOSC << LPC_SCB_USBPLLCLKSEL_SEL);
+ lpc_scb.usbpllclkuen = (0 << LPC_SCB_USBPLLCLKUEN_ENA);
+ lpc_scb.usbpllclkuen = (1 << LPC_SCB_USBPLLCLKUEN_ENA);
+ while (!(lpc_scb.usbpllclkuen & (1 << LPC_SCB_USBPLLCLKUEN_ENA)))
+ ;
+
+ /* Power down everything we don't need */
+ lpc_scb.pdruncfg = ((1 << LPC_SCB_PDRUNCFG_IRCOUT_PD) |
+ (1 << LPC_SCB_PDRUNCFG_IRC_PD) |
+ (0 << LPC_SCB_PDRUNCFG_BOD_PD) |
+ (1 << LPC_SCB_PDRUNCFG_ADC_PD) |
+ (1 << LPC_SCB_PDRUNCFG_WDTOSC_PD) |
+ (1 << LPC_SCB_PDRUNCFG_USBPLL_PD) |
+ (1 << LPC_SCB_PDRUNCFG_USBPAD_PD) |
+ (1 << 11) |
+ (7 << 13));