ST STM32F205 series Reference Manual page 1037

RM0033
Bit 4 ITTXFE: IN token received when TxFIFO is empty
Bit 3 TOC: Timeout condition
Bit 2 Reserved, must be kept at reset value.
Bit 1 EPDISD: Endpoint disabled interrupt
Bit 0 XFRC: Transfer completed interrupt
OTG_FS device endpoint-x interrupt register (OTG_FS_DOEPINTx) (x = 0..3,
where x = Endpoint_number)
Address offset: 0xB08 + 0x20 * x
Reset value: 0x0000 0080
This register indicates the status of an endpoint with respect to USB- and AHB-related
events. It is shown in
Endpoints Interrupt bit of the OTG_FS_GINTSTS register (OEPINT bit in
OTG_FS_GINTSTS) is set. Before the application can read this register, it must first read
the OTG_FS_DAINT register to get the exact endpoint number for the OTG_FS_DOEPINTx
register. The application must clear the appropriate bit in this register to clear the
corresponding bits in the OTG_FS_DAINT and OTG_FS_GINTSTS registers.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bits 31:14 Reserved, must be kept at reset value.
Bit 13 NAK: NAK input
Bit 12 BERR: Babble error interrupt
Bits 11:9 Reserved, must be kept at reset value.
Applies to non-periodic IN endpoints only.
Indicates that an IN token was received when the associated TxFIFO (periodic/non-periodic)
was empty. This interrupt is asserted on the endpoint for which the IN token was received.
Applies only to Control IN endpoints.
Indicates that the core has detected a timeout condition on the USB for the last IN token on
this endpoint.
This bit indicates that the endpoint is disabled per the application's request.
This field indicates that the programmed transfer is complete on the AHB as well as on the
USB, for this endpoint.
Figure 357. The application must read this register when the OUT
Reserved
The core generates this interrupt when a NAK is transmitted or received by the device. In
case of isochronous IN endpoints the interrupt gets generated when a zero length packet is
transmitted due to unavailability of data in the Tx FIFO.
The core generates this interrupt when babble is received for the endpoint.
USB on-the-go full-speed (OTG_FS)
RM0033 Rev 8
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