| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiport memory element capable of testing operation without colliding with an internal command/address generation path through a restricted external pin. SOLUTION: The multiport memory element, having a number of ports for supporting a serial input/output interface comprises a memory core; a control means for generating the internal command signal, an internal address signal, and a control signal by using commands inputted to the number of ports in a packet form and addresses; and a mode selection means for generating a test mode flag signal by combining signals applied to a number of mode selection pads. The input/output data assigned to transmission and reception pads by responding to the test mode flag signal are exchanged with a memory core via the ports, and the command assigned to the transmission and reception pads, the address, and the control signal are bypassed by the port and the control means and are provided to the memory core. COPYRIGHT: (C)2006,JPO&NCIPI
|
