GigaDevice Semiconductor GD32VF103 - Global Control and Status Registers; Register Definition

GD32VF103 User Manual
477
21.7. Register definition
USBFS base address: 0x5000 0000
21.7.1. Global control and status registers
Global OTG control and status register (USBFS_GOTGCS)
Address offset: 0x0000
Reset value: 0x0000 0800
This register has to be accessed by word (32-bit)
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
BSV
ASV
DI
IDPS
r
r
r
r
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
DHNPEN
HHNPEN
HNPREQ
HNPS
Reserved
SRPREQ
SRPS
rw
rw
rw
r
rw
r
Bits
Fields
Descriptions
31:20
Reserved
Must be kept at reset value
19
BSV
B-Session Valid (described in OTG protocol).
0: Vbus voltage level of a OTG B-Device is below VBSESSVLD
1: Vbus voltage level of a OTG B-Device is above VBSESSVLD
Note: Only accessible in OTG B-Device mode.
18
ASV
A- Session valid
A-host mode transceiver status.
0: Vbus voltage level of a OTG A-Device is below VASESSVLD
1: Vbus voltage level of a OTG A-Device is above VASESSVLD
The A-Device is the default host at the start of a session.
Note: Only accessible in OTG A-Device mode.
17
DI
Debounce interval
Debounce interval of a detected connection.
0: Indicates the long debounce interval , when a plug-on and connection occurs on
USB bus
1: Indicates the short debounce interval, when a soft connection is used in HNP