IN and OUT tokens contain a seven-bit device number and four-bit function number (for multifunction devices) and command the device to transmit DATAx packets, or receive the following DATAx packets, respectively. An IN token expects a response from a device. The response may be a NAK or STALL response, or a DATAx frame. In the latter case, the host issues an ACK handshake if appropriate. An OUT token is followed immediately by a DATAx frame. The device responds with ACK, NAK, NYET, or STALL, as appropriate.
IN and OUT tokens contain a seven - bit device number and four - bit function number ( for multifunction devices ) and command the device to transmit DATAx packets , or receive the following DATAx packets , respectively . An IN token expects a response from a device . The response may be a NAK or STALL response , or a DATAx frame . In the latter case , the host issues an ACK handshake if appropriate . An OUT token is followed immediately by a DATAx frame . The device responds with ACK , NAK , NYET , or STALL , as appropriate .
An IN token expects what?
An IN token expects what ?
a response from a device
a response from a device