| 摘要 |
A CPU includes an address decoder that controls input of data from a JTAG I/F and output of data to the JTAG I/F, an authentication unit that performs predetermined authentication processing using an entered password and a predetermined key and, if the authentication is successful, output a predetermined authentication signal, and a selector that controls output of data to be outputted to JTAG I/F according to presence or absence of the predetermined authentication signal.
|
