SONIX SN32F264 - USB Interrupt Event Status Register (USB_INSTS)

SN32F260 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 109 Version 1.5
3
EP4_NAK_EN
EP4 NAK Interrupt Enable
0: Disable EP4 NAK interrupt function.
1: Enable EP4 NAK interrupt function.
R/W
0
2
EP3_NAK_EN
EP3 NAK Interrupt Enable
0: Disable EP3 NAK interrupt function.
1: Enable EP3 NAK interrupt function.
R/W
0
1
EP2_NAK_EN
EP2 NAK Interrupt Enable
0: Disable EP2 NAK interrupt function.
1: Enable EP2 NAK interrupt function.
R/W
0
0
EP1_NAK_EN
EP1 NAK Interrupt Enable
0: Disable EP1 NAK interrupt function.
1: Enable EP1 NAK interrupt function.
R/W
0
10.9.2 USB Interrupt Event Status Register (USB_INSTS)
Address Offset: 0x04
Reset value: 0x0000 0000
Bit
Name
Description
Attribute
Reset
31
BUS_RESET
USB Bus Reset signal (>2.5us SE0) flag
0: No bus reset signal is detected.
1: Bus reset signal is detected. Cleared by write 1 to USB_INSTSC[31].
R
0
30
BUS_SUSPEND
USB Bus Suspend signal (>3ms idle state) flag.
0: No bus suspend is detected.
1: Bus suspend is detected.
R
0
29
BUS_RESUME
USB Bus Resume signal flag
0: No bus resume signal is detected.
1: Bus resume signal from suspend mode is detected. Cleared by write 1 to
USB_INSTSC[29].
R
0
28:27
Reserved
R
0
26
USB_SOF
USB SOF packet received flag.
0: No USB SOF packet.
1: USB SOF packet is received. Cleared by write 1 to USB_INSTSC[26].
R
0
25
Reserved
R
0
24
EP0_PRESETUP
EP0 Setup token packet flag. This flag will not trigger USB interrupt.
0: No EP0 Setup token packet.
1: EP0 Setup token packet is received. Cleared by write 1 to
USB_INSTSC[24]
R
0
23
EP0_SETUP
EP0 Setup transaction flag.
0: No EP0 Setup transaction.
1: EP0 Setup transaction is completed. Cleared by write 1 to
USB_INSTSC[23].
R
0
22
EP0_IN
EP0 IN ACK transaction flag.
0: No EP0 IN ACK Transaction.
1: EP0 IN ACK transaction is completed. Cleared by write 1 to
USB_INSTSC[22].
R
0
21
EP0_OUT
EP0 OUT ACK transaction flag.
0: No EP0 OUT ACK transaction.
1: EP0 OUT ACK transaction is completed. Cleared by write 1 to
USB_INSTSC[21].
R
0
20
EP0_IN_STALL
EP0 IN STALL transaction flag.
0: No EP0 IN STALL transaction.
1: EP0 IN STALL transaction is completed. Cleared by write 1 to
USB_INSTSC[20].
R
0
19
EP0_OUT_STALL
EP0 OUT STALL transaction flag.
0: No EP0 OUT STALL transaction.
1: EP0 OUT STALL transaction is completed. Cleared by write 1 to
USB_INSTSC[19].
R
0