DocID018909 Rev 11 1427/1731
RM0090 USB on-the-go high-speed (OTG_HS)
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OTG_HS host channel-x interrupt register (OTG_HS_HCINTx) (x = 0..11, where
x = Channel_number)
Address offset: 0x508 + (Channel_number × 0x20)
Reset value: 0x0000 0000
This register indicates the status of a channel with respect to USB- and AHB-related events.
It is shown in Figure 412. The application must read this register when the host channels
interrupt bit in the Core interrupt register (HCINT bit in OTG_HS_GINTSTS) is set. Before
the application can read this register, it must first read the host all channels interrupt
(OTG_HS_HAINT) register to get the exact channel number for the host channel-x interrupt
register. The application must clear the appropriate bit in this register to clear the
corresponding bits in the OTG_HS_HAINT and OTG_HS_GINTSTS registers.
313029282726252423222120191817161514131211109876543210
Reserved
DTERR
FRMOR
BBERR
TXERR
NYET
ACK
NAK
STALL
AHBERR
CHH
XFRC
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Bits 31:11 Reserved, must be kept at reset value.
Bit 10 DTERR: Data toggle error
Bit 9 FRMOR: Frame overrun
Bit 8 BBERR: Babble error
Bit 7 TXERR: Transaction error
Indicates one of the following errors occurred on the USB.
CRC check failure
Timeout
Bit stuff error
False EOP
Bit 6 NYET: Response received interrupt
Bit 5 ACK: ACK response received/transmitted interrupt
Bit 4 NAK: NAK response received interrupt
Bit 3 STALL: STALL response received interrupt
Bit 2 AHBERR: AHB error
This error is generated only in Internal DMA mode when an AHB error occurs during an AHB
read/write operation. The application can read the corresponding DMA channel address
register to get the error address.
Bit 1 CHH: Channel halted
Indicates the transfer completed abnormally either because of any USB transaction error or in
response to disable request by the application.
Bit 0 XFRC: Transfer completed
Transfer completed normally without any errors.
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