English to Greek Tech/Engineering Computers: Systems, Networks

Address Field
The function address (ADDR) field specifies the function, via its address, that is either the source or destination of a data packet, depending on the value of the token PID. As shown in Figure 8-2, a total of 128 addresses are specified as ADDR. The ADDR field is specified for IN, SETUP, and OUT
tokens. By definition, each ADDR value defines a single function. Upon reset and power-up, a function’s address defaults to a value of zero and must be programmed by the host during the enumeration process. Function address zero is reserved as the default address and may not be assigned to any other use.