Semiconductor integrated circuit

摘要

Provided is a semiconductor integrated circuit according to an exemplary aspect of the present invention including a data transmitting circuit that transmits data in parallel through a plurality of signal lines and a data receiving circuit that receives the data. The data transmitting circuit includes a plurality of data output circuits that output the data in a data transmission mode or set an output to a high impedance state in a HiZ mode, a plurality of data selection circuits that select one of the data and fixed data and output the selected data to the data output circuits, and a control circuit that controls the data output circuits to output the fixed data during a period between a time when a mode is switched from the HiZ mode to the data transmission mode and a time when the data output circuits start to output the data.

主权项

1. A semiconductor integrated circuit comprising:
a data transmitting circuit that transmits transmission data in parallel through a plurality of signal lines, wherein the data transmitting circuit comprises:
a plurality of data output circuits that output the transmission data in a data transmission mode or set an output to a high impedance state in a high impedance mode, each of the plurality of data output circuits being provided for a corresponding one of the plurality of signal lines;a plurality of data selection circuits, each of which selects one of the transmission data and preliminarily-set fixed data, and outputs the selected data to a corresponding one of the corresponding data output circuits; anda control circuit that controls the data output circuits so that each of the data output circuits outputs the fixed data during a period between when a mode is switched from the high impedance mode to the data transmission mode and when the data output circuits start to output the transmission data.