Регистры H616: USB Standby Control Register

31 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 16
15 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 00

VDD_USB

Bit 31
R/W
0x1

1: VDD_USB power from ldo
0: VDD_USB power from pin

USB2_LDO

Bits 30 : 28
R/W
0x1

000: 0.87V
001: 0.9V
010: 0.94V
011: 0.97V
100:1.01V
101:1.05V
110:1.08V
111:1.11V
USB2_LDO output power level select

Unused

Bits 27 : 26

RC_CLK_EN_USB

Bit 25
R/W
0x0

0: Disable
1: Enable

RC_CLK_SEL_USB

Bit 24
R/W
0x0

SCLK_USBPHY, EHCI_HCLK and OHCI_SCLK Clock Source Select. RC16M clock is selected only in USB standby mode if necessary

0: SCLK_USBPHY is from OSC24M, EHCI_HCLK and OHCI_HCLK are from Hclk
1: SCLK_USBPHY, EHCI_HCLK and OHCI_SCLK are from RC16M

Unused

Bits 23 : 17

USB_POWER_OFF_GATING

Bit 16
R/W
0x0

0: disable
1: enable
Gating the VDD_SYS to VDD_USB signal in USB standby mode.
It must be set to 1 before entering USB standby mode and set to 0 when exiting Normal mode.

Unused

Bits 15 : 9

USB_STBY_IRQ_POWER_OFF_GATING

Bit 8
R/W
0x0

0: disable
1: enable
Gating the USB standby irq signal to RTC module in Super Standby mode when USB module is power off.
It must be set to 1 in Super Standby mode and must set to 0 in other mode.

Unused

Bits 7 : 6

SYSTEM_STANDBY_IRQ_OUTPUT_GATING

Bit 5
R/W
0x0

0: disable irq output
1: enable irq output
Mask the SYS standby irq output to nmi pad when SoC is going to USB standby mode or Super standby mode.

USB_STBY_IRQ_OUTPUT_GATING

Bit 4
R/W
0x0

0: disable irq output
1: enable irq output
Mask the USB standby irq output to nmi pad. It must be set to 1 in USB
standby mode and set to 0 in other mode.

Unused

Bits 3 : 0

Bit fields structure

typedef union usb_stby_ctrl_reg { struct { unsigned unused0 : 4; unsigned usb_stby_irq_output_gating : 1; unsigned system_standby_irq_output_gating : 1; unsigned unused1 : 2; unsigned usb_stby_irq_power_off_gating : 1; unsigned unused2 : 7; unsigned usb_power_off_gating : 1; unsigned unused3 : 7; unsigned rc_clk_sel_usb : 1; unsigned rc_clk_en_usb : 1; unsigned unused4 : 2; unsigned usb2_ldo : 3; unsigned vdd_usb : 1; } b; unsigned long w; } USB_STBY_CTRL_REG