Table 175. Endpoint Kind Meaning; Table 176. Transmission Status Encoding - ST STM32F101 series Reference Manual

Universal serial bus full-speed device interface (USB)
EP_TYPE[1:0]
10
11
00
01
10
11
STAT_TX[1:0]
00
01
10
11
639/1128
Table 174. Endpoint type encoding (continued)
ISO
INTERRUPT

Table 175. Endpoint kind meaning

EP_TYPE[1:0]
BULK
CONTROL
ISO
INTERRUPT

Table 176. Transmission status encoding

DISABLED: all transmission requests addressed to this endpoint are ignored.
STALL: the endpoint is stalled and all transmission requests result in a STALL
handshake.
NAK: the endpoint is naked and all transmission requests result in a NAK
handshake.
VALID: this endpoint is enabled for transmission.
DocID13902 Rev 15
Meaning
EP_KIND Meaning
DBL_BUF
STATUS_OUT
Not used
Not used
Meaning
RM0008