Circuit device having two communication interfaces for faster and slower transmission speeds, and transmission module, electronic apparatus, and moving object that have the circuit device
First Claim
Patent Images
1. A circuit device comprising:
- a first serial interface that receives a serial signal transmitted from a controller at a first communication speed;
a transmission data input terminal that receives transmission data transmitted from the controller at a second communication speed slower than the first communication speed;
a second serial interface that receives the transmission data via the transmission data input terminal;
a selector that receives the serial signal from the first serial interface and the transmission data from the transmission data input terminal so as to select one of the serial signal and transmission data and output an selected signal;
a latch circuit that receives the selected signal from the selector and outputs a latched signal; and
a transmission circuit that outputs a transmission signal based on the latched signal,wherein the second serial interface has the selector and the latch circuit.
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Abstract
To provide different paths for communication of a serial signal required for high-speed communication and communication of transmission data that may be handled in low-speed communication, a circuit device includes a serial interface that receives a serial signal transmitted from a controller at a first communication speed, a transmission data input terminal that receives transmission data transmitted from the controller at a second communication speed slower than the first communication speed, and a transmission circuit that outputs a transmission signal corresponding to the transmission data based on the serial signal and the transmission data.
8 Citations
16 Claims
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1. A circuit device comprising:
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a first serial interface that receives a serial signal transmitted from a controller at a first communication speed; a transmission data input terminal that receives transmission data transmitted from the controller at a second communication speed slower than the first communication speed; a second serial interface that receives the transmission data via the transmission data input terminal; a selector that receives the serial signal from the first serial interface and the transmission data from the transmission data input terminal so as to select one of the serial signal and transmission data and output an selected signal; a latch circuit that receives the selected signal from the selector and outputs a latched signal; and a transmission circuit that outputs a transmission signal based on the latched signal, wherein the second serial interface has the selector and the latch circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification