ST STM32F207 Series Reference Manual page 1008

USB on-the-go full-speed (OTG_FS)
OTG_FS Host periodic transmit FIFO size register (OTG_FS_HPTXFSIZ)
Address offset: 0x100
Reset value: 0x0200 0400
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
r r r r r r r
Bits 31:16 PTXFD: Host periodic TxFIFO depth
This value is in terms of 32-bit words.
Minimum value is 16
Bits 15:0 PTXSA: Host periodic TxFIFO start address
The power-on reset value of this register is the sum of the largest Rx data FIFO depth and
largest non-periodic Tx data FIFO depth.
OTG_FS device IN endpoint transmit FIFO size register (OTG_FS_DIEPTXFx)
(x = 1..3, where x is the FIFO_number)
Address offset: 0x104 + 0x04 * (x -1)
Reset value: 0x0200 0200
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
r r r r r r r
Bits 31:16 INEPTXFD: IN endpoint TxFIFO depth
Bits 15:0 INEPTXSA: IN endpoint FIFOx transmit RAM start address
1008/1381
PTXFSIZ
r r r r r r
INEPTXFD
r r r r r r
This value is in terms of 32-bit words.
Minimum value is 16
The power-on reset value of this register is specified as the largest IN endpoint FIFO
number depth.
This field contains the memory start address for IN endpoint transmit FIFOx. The address
must be aligned with a 32-bit memory location.
r r r r r r r
r r r r r r r
RM0033 Rev 9
9 8 7 6 5
PTXSA
r r r r r r r
9 8 7 6 5
INEPTXSA
r r r r r r r
RM0033
4 3 2 1 0
r r r r r
4 3 2 1 0
r r r r r