USB on-the-go full-speed/high-speed (OTG_FS/OTG_HS) RM0390
1134/1328 RM0390 Rev 4
Device mode:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res.
STSPH
ST
Res. Res. FRMNUM[3:0] PKTSTS[3:0] DPID[1]
r rrrrrrrrr
1514131211109876543210
DPID[0] BCNT[10:0] EPNUM[3:0]
rrrrrrrrrrrrrrrr
Bits 31:28 Reserved, must be kept at reset value.
Bit 27 STSPHST: Status phase start
Indicates the start of the status phase for a control write transfer. This bit is set along with
the OUT transfer completed PKTSTS pattern.
Bits 26:25 Reserved, must be kept at reset value.
Bits 24:21 FRMNUM[3:0]: Frame number
This is the least significant 4 bits of the frame number in which the packet is received on the
USB. This field is supported only when isochronous OUT endpoints are supported.
Bits 20:17 PKTSTS[3:0]: Packet status
Indicates the status of the received packet
0001: Global OUT NAK (triggers an interrupt)
0010: OUT data packet received
0011: OUT transfer completed (triggers an interrupt)
0100: SETUP transaction completed (triggers an interrupt)
0110: SETUP data packet received
Others: Reserved
Bits 16:15 DPID[1:0]: Data PID
Indicates the data PID of the received OUT data packet
00: DATA0
10: DATA1
01: DATA2
11: MDATA
Bits 14:4 BCNT[10:0]: Byte count
Indicates the byte count of the received data packet.
Bits 3:0 EPNUM[3:0]: Endpoint number
Indicates the endpoint number to which the current received packet belongs.
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