GigaDevice Semiconductor GD32F30 Series User Manual page 838

Global receive FIFO length register (USBFS_GRFLEN)
Address offset: 0x024
Reset value: 0x0000 0200
This register has to be accessed by word (32-bit)
31 30 29
15 14 13
Bits Fields
31:16 Reserved
15:0 RXFD[15:0]
Host non-periodic transmit FIFO length register /Device IN endpoint 0 transmit
FIFO length (USBFS_HNPTFLEN _DIEP0TFLEN)
Address offset: 0x028
Reset value: 0x0200 0200
This register has to be accessed by word (32-bit)
31 30 29
15 14 13
Host Mode:
28 27 26 25
12 11 10 9
Descriptions
Must be kept at reset value
Rx FIFO depth
In terms of 32-bit words.
1≤RXFD≤1024
28 27 26 25
12 11 10 9
GD32F30x User Manual
24 23 22 21
8 7 6 5
r/rw
24 23 22 21
r/rw
8 7 6 5
r/rw
20 19 18 17
4 3 2 1
20 19 18 17
4 3 2 1
16
0
16
0
838