Semiconductor integrated circuit device, method of controlling the semiconductor integrated circuit device and information processing system
First Claim
1. A semiconductor integrated circuit device comprising:
- a scan memory element group that a plurality of scan memory elements are connected in series;
an end code register that is provided between an input terminal and an input side of the scan memory element group and holds an end code;
a start code register that is provided between an output terminal and an output side of the scan memory element group and holds a start code; and
a scan control circuit that controls shift operations of the scan memory element group, the end code register and the start code register and outputs scan data to the output terminal.
1 Assignment
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Accused Products
Abstract
A debug system scans a scan memory element group having a plurality of scan memory elements which are connected in series in a semiconductor integrated circuit device and collects data in the scan memory element group. The semiconductor integrated circuit device has an end code register which is provided between an input terminal and an input side of the scan memory element group and holds an end code, a start code register which is provided between an output terminal and an output side of the scan memory element group and holds a start code, and a scan control circuit which controls shift operations of the scan memory element group, the end code register and the start code register, and outputs scan data to the output terminal.
10 Citations
20 Claims
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1. A semiconductor integrated circuit device comprising:
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a scan memory element group that a plurality of scan memory elements are connected in series; an end code register that is provided between an input terminal and an input side of the scan memory element group and holds an end code; a start code register that is provided between an output terminal and an output side of the scan memory element group and holds a start code; and a scan control circuit that controls shift operations of the scan memory element group, the end code register and the start code register and outputs scan data to the output terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling of a semiconductor integrated circuit device, the method comprising:
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connecting an end code register, which holds an end code, to an input side of a scan memory element group in which a plurality of scan memory elements are connected in series; connecting a start code register, which holds a start code, to an output side of the scan memory element group; controlling a shift operation of the scan memory element group, the end code register, and the start code register; and outputting scan data to the output terminal to collect data of the scan memory element group. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An information processing system comprising:
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a processing device having a semiconductor integrated circuit that performs information processing; and a system control device that monitors the processing device, wherein the semiconductor integrated circuit comprises; a functional circuit that performs the information processing; a scan memory element group that a plurality of scan memory elements are connected in series; an end code register that is provided between an input terminal connected to the system control device and an input side of the scan memory element group and holds an end code; a start code register that is provided between an output terminal connected to the system control device and an output side of the scan memory element group and holds a start code; and a scan control circuit that controls shift operations of the scan memory element group, the end code register and the start code register and outputs scan data to the output terminal. - View Dependent Claims (17, 18, 19, 20)
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Specification