USB on-the-go full-speed (OTG_FS) RM0008
850/1096 Doc ID 13902 Rev 12
OTG_FS general core configuration register (OTG_FS_GCCFG)
Address offset: 0x038
Reset value: 0x0000 0000
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: dx1 location available
10: dx2 locations available
bxn: dxn locations available (0 ≤ n ≤ dx8)
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: dx1 word available
10: dx2 words available
0xn: dxn words available (where 0 ≤ n ≤ dx256)
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
Bit 18 VBUSASEN: Enable the V
BUS
sensing “A” device
0: V
BUS
sensing “A” disabled
1: V
BUS
sensing “A” enabled
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