STMicroelectronics STM32F405 Reference Manual page 1285

RM0090
Bits 31:24 PTXQTOP: Top of the periodic transmit request queue
Bits 23:16 PTXQSAV: Periodic transmit request queue space available
Bits 15:0 PTXFSAVL: Periodic transmit data FIFO space available
OTG_FS Host all channels interrupt register (OTG_FS_HAINT)
Address offset: 0x414
Reset value: 0x0000 000
When a significant event occurs on a channel, the host all channels interrupt register
interrupts the application using the host channels interrupt bit of the Core interrupt register
(HCINT bit in OTG_FS_GINTSTS). This is shown in
per channel, up to a maximum of 16 bits. Bits in this register are set and cleared when the
application sets and clears bits in the corresponding host channel-x interrupt register.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 HAINT: Channel interrupts
This indicates the entry in the periodic Tx request queue that is currently being processed by
the MAC.
This register is used for debugging.
Bit 31: Odd/Even frame
– 0: send in even frame
– 1: send in odd frame
Bits 30:27: Channel/endpoint number
Bits 26:25: Type
– 00: IN/OUT
– 01: Zero-length packet
– 11: Disable channel command
Bit 24: Terminate (last entry for the selected channel/endpoint)
Indicates the number of free locations available to be written in the periodic transmit request
queue. This queue holds both IN and OUT requests.
00: Periodic transmit request queue is full
01: 1 location available
10: 2 locations available
bxn: n locations available (0 ≤ n ≤ 8)
Others: Reserved
Indicates the number of free locations available to be written to in the periodic TxFIFO.
Values are in terms of 32-bit words
0000: Periodic TxFIFO is full
0001: 1 word available
0010: 2 words available
bxn: n words available (where 0 ≤ n ≤ PTXFD)
Others: Reserved
Reserved
One bit per channel: Bit 0 for Channel 0, bit 15 for Channel 15
DocID018909 Rev 11
USB on-the-go full-speed (OTG_FS)
Figure 394. There is one interrupt bit
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HAINT
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