| 摘要 |
<p>An external bus interface (6) is provided to an LSI, which performs access to a plurality of external devices through an external bus according to an access request, and is provided with an I/O terminal unit (63) that can switch an electrical property, which is either the current drive capability and/or the throughput of output voltage, according to a setting and which performs input and output of signals with respect to the external bus; and an I/O terminal controller (62) for performing setting of the electrical property of the I/O terminal in synchronization with the access request. The I/O terminal controller (62), upon receiving the access request, selects a control pattern corresponding to an external device of the access destination, and can perform setting of the electrical property according to the control pattern.</p> |
