ST STM32G473 User Manual

RM0440 Rev 4 2031/2126
RM0440 Universal serial bus full-speed device interface (USB)
2041
LPM control and status register (USB_LPMCSR)
Address offset: 0x54
Reset value: 0x0000
Battery charging detector (USB_BCDR)
Address offset: 0x58
Reset value: 0x0000
Bits 15:3 BTABLE[15:3]: Buffer table
These bits contain the start address of the buffer allocation table inside the dedicated packet
memory. This table describes each endpoint buffer location and size and it must be aligned
to an 8 byte boundary (the 3 least significant bits are always ‘0). At the beginning of every
transaction addressed to this device, the USB peripheral reads the element of this table
related to the addressed endpoint, to get its buffer start location and the buffer size (Refer to
Structure and usage of packet buffers on page 2013).
Bits 2:0 Reserved, forced by hardware to 0.
1514131211109876543210
Res. Res. Res. Res. Res. Res. Res. Res. BESL[3:0]
REM
WAKE
Res.
LPM
ACK
LPM
EN
r r rw rw
Bits 15:8 Reserved, must be kept at reset value.
Bits 7:4 BESL[3:0]: BESL value
These bits contain the BESL value received with last ACKed LPM Token
Bit 3 REMWAKE: bRemoteWake value
This bit contains the bRemoteWake value received with last ACKed LPM Token
Bit 2 Reserved
Bit 1 LPMACK: LPM Token acknowledge enable
0: the valid LPM Token will be NYET.
1: the valid LPM Token will be ACK.
The NYET/ACK will be returned only on a successful LPM transaction:
No errors in both the EXT token and the LPM token (else ERROR)
A valid bLinkState = 0001B (L1) is received (else STALL)
Bit 0 LPMEN: LPM support enable
This bit is set by the software to enable the LPM support within the USB device. If this bit is
at ‘0 no LPM transactions are handled.
1514131211109876543210
DPPU Res. Res. Res. Res. Res. Res. Res.
PS2
DET
SDET PDET
DC
DET
SDEN PDEN
DCD
EN
BCD
EN
rw r r r r rw rw rw rw

ST STM32G473 Specifications

General

Brand	ST
Model	STM32G473
Category	Microcontrollers
Language	English