Semiconductor device and chip identifier setting method

摘要

A semiconductor chip transmits a request signal which requests notification of the setting state of a chip identifier to another semiconductor chip connected to one of the upstream and downstream, receives a response signal indicating the setting state of the chip identifier and the value of the chip identifier, as a response to the request signal, and performs a chip identifier setting process based on the response signal. When receiving a request signal from another semiconductor chip connected to the other of the upstream and downstream, the semiconductor chip transmits a response signal indicating the setting state of the chip identifier and the value of the chip identifier, as a response to the request signal.

主权项

1. A semiconductor device comprising a plurality of semiconductor chips, a particular semiconductor chip, amongst the plurality of semiconductor chips, comprising:
a first transmission unit configured to transmit a first request signal which requests notification of a setting state of a chip identifier, to a first semiconductor chip connected on one of an upstream and a downstream; a first reception unit configured to receive a first response signal indicating the setting state and a value of the chip identifier in the first semiconductor chip, as a response to the first request signal; a setting unit configured to perform a chip identifier setting process to set a chip identifier to the particular semiconductor chip whose chip identifier setting process is not completed, based on the first response signal; a second reception unit configured to receive a second request signal from a second semiconductor chip connected to another of the upstream and the downstream; and a second transmission unit configured to transmit a second response signal indicating a setting state and the value of the chip identifier in the particular semiconductor chip, as a response to the second request signal, wherein in a case where the first response signal indicates setting incompletion of the chip identifier, the setting unit causes the first transmission unit to retransmit the first request signal.