Datasheet

Bits Name Description Type Reset
29 EP0_INT_1BUF Device: Set bit in BUFF_STATUS for every buffer
completed on EP0
RW 0x0
28 EP0_INT_2BUF Device: Set bit in BUFF_STATUS for every 2 buffers
completed on EP0
RW 0x0
27 EP0_INT_NAK Device: Set bit in EP_STATUS_STALL_NAK when EP0
sends a NAK
RW 0x0
26 DIRECT_EN Direct bus drive enable RW 0x0
25 DIRECT_DP Direct control of DP RW 0x0
24 DIRECT_DM Direct control of DM RW 0x0
23:19 Reserved. - - -
18 TRANSCEIVER_PD Power down bus transceiver RW 0x0
17 RPU_OPT Device: Pull-up strength (0=1K2, 1=2k3) RW 0x0
16 PULLUP_EN Device: Enable pull up resistor RW 0x0
15 PULLDOWN_EN Host: Enable pull down resistors RW 0x0
14 Reserved. - - -
13 RESET_BUS Host: Reset bus SC 0x0
12 RESUME Device: Remote wakeup. Device can initiate its own
resume after suspend.
SC 0x0
11 VBUS_EN Host: Enable VBUS RW 0x0
10 KEEP_ALIVE_EN Host: Enable keep alive packet (for low speed bus) RW 0x0
9 SOF_EN Host: Enable SOF generation (for full speed bus) RW 0x0
8 SOF_SYNC Host: Delay packet(s) until after SOF RW 0x0
7 Reserved. - - -
6 PREAMBLE_EN Host: Preable enable for LS device on FS hub RW 0x0
5 Reserved. - - -
4 STOP_TRANS Host: Stop transaction SC 0x0
3 RECEIVE_DATA Host: Receive transaction (IN to host) RW 0x0
2 SEND_DATA Host: Send transaction (OUT from host) RW 0x0
1 SEND_SETUP Host: Send Setup packet RW 0x0
0 START_TRANS Host: Start transaction SC 0x0
USB: SIE_STATUS Register
Offset: 0x50
Description
SIE status register
Table 414.
SIE_STATUS Register
RP2040 Datasheet
4.1. USB 420