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ST STM32F103 series Reference Manual

ST STM32F103 series
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USB on-the-go full-speed (OTG_FS) RM0008
869/1128 DocID13902 Rev 15
OTG_FS general core configuration register (OTG_FS_GCCFG)
Address offset: 0x038
Reset value: 0x0000 0000
Bit 31 Reserved, must be kept at reset value.
Bits 30:24 NPTXQTOP: Top of the non-periodic transmit request queue
Entry in the non-periodic Tx request queue that is currently being processed by the MAC.
Bits 30:27: Channel/endpoint number
Bits 26:25:
00: IN/OUT token
01: Zero-length transmit packet (device IN/host OUT)
11: Channel halt command
Bit 24: Terminate (last entry for selected channel/endpoint)
Bits 23:16 NPTQXSAV: Non-periodic transmit request queue space available
Indicates the amount of free space available in the non-periodic transmit request queue.
This queue holds both IN and OUT requests in host mode. Device mode has only IN
requests.
00: Non-periodic transmit request queue is full
01: 1 location available
10: 2 locations available
bxn: n locations available (0 n 8)
Others: Reserved
Bits 15:0 NPTXFSAV: Non-periodic TxFIFO space available
Indicates the amount of free space available in the non-periodic TxFIFO.
Values are in terms of 32-bit words.
00: Non-periodic TxFIFO is full
01: 1 word available
10: 2 words available
0xn: n words available (where 0 n 256)
Others: Reserved
313029282726252423222120191817161514131211109876543210
Reserved
SOFOUTEN
VBUSBSEN
VBUSASEN
Reserved
.PWRDWN
Reserved
rw rw rw rw
Bits 31:21 Reserved
Bit 20 SOFOUTEN: SOF output enable
0: SOF pulse not available on PAD
1: SOF pulse available on PAD
Bit 19 VBUSBSEN: Enable the V
BUS
sensing “B” device
0: V
BUS
sensing “B” disabled
1: V
BUS
sensing “B” enabled

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ST STM32F103 series Specifications

General IconGeneral
BrandST
ModelSTM32F103 series
CategoryMicrocontrollers
LanguageEnglish

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