Datasheet

Table Of Contents
Bits Name Description Type Reset
15 DEV_RESUME_FR
OM_HOST
Set when the device receives a resume from the host.
Cleared by writing to SIE_STATUS.RESUME
RO 0x0
14 DEV_SUSPEND Set when the device suspend state changes. Cleared by
writing to SIE_STATUS.SUSPENDED
RO 0x0
13 DEV_CONN_DIS Set when the device connection state changes. Cleared by
writing to SIE_STATUS.CONNECTED
RO 0x0
12 BUS_RESET Source: SIE_STATUS.BUS_RESET RO 0x0
11 VBUS_DETECT Source: SIE_STATUS.VBUS_DETECT RO 0x0
10 STALL Source: SIE_STATUS.STALL_REC RO 0x0
9 ERROR_CRC Source: SIE_STATUS.CRC_ERROR RO 0x0
8 ERROR_BIT_STUF
F
Source: SIE_STATUS.BIT_STUFF_ERROR RO 0x0
7 ERROR_RX_OVER
FLOW
Source: SIE_STATUS.RX_OVERFLOW RO 0x0
6 ERROR_RX_TIME
OUT
Source: SIE_STATUS.RX_TIMEOUT RO 0x0
5 ERROR_DATA_SE
Q
Source: SIE_STATUS.DATA_SEQ_ERROR RO 0x0
4 BUFF_STATUS Raised when any bit in BUFF_STATUS is set. Clear by
clearing all bits in BUFF_STATUS.
RO 0x0
3 TRANS_COMPLET
E
Raised every time SIE_STATUS.TRANS_COMPLETE is set.
Clear by writing to this bit.
RO 0x0
2 HOST_SOF Host: raised every time the host sends a SOF (Start of
Frame). Cleared by reading SOF_RD
RO 0x0
1 HOST_RESUME Host: raised when a device wakes up the host. Cleared by
writing to SIE_STATUS.RESUME
RO 0x0
0 HOST_CONN_DIS Host: raised when a device is connected or disconnected
(i.e. when SIE_STATUS.SPEED changes). Cleared by writing
to SIE_STATUS.SPEED
RO 0x0
References
http://www.usbmadesimple.co.uk/
https://www.usb.org/document-library/usb-20-specification
4.2. DMA
The RP2040 Direct Memory Access (DMA) master performs bulk data transfers on a processor’s behalf. This leaves
processors free to attend to other tasks, or enter low-power sleep states. The data throughput of the DMA is also
significantly higher than one of RP2040’s processors.
RP2040 Datasheet
4.2. DMA 413