Semiconductor integrated circuit
AssigneeYamaha Corporation
InventorsNOBUAKI TSUJI, HIROTAKA KAWAI
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Abstract
An N-channel transistor is provided as a switch between a high potential power line and a low potential power line. A high-pass filter is constituted by a capacitor and a resistor. When a voltage between the high potential power line and the low potential power line is started to oscillate by a switching operation, the high-pass filter causes a high-pass component thereof to pass, thereby turning ON the N-channel transistor to reduce a ringing.
Claims9
1-3. (canceled)
A ringing reduction circuit provided inside a semiconductor integrated circuit that includes an output buffer circuit and an output signal line for transmitting an output signal of the output buffer to a load outside the semiconductor integrated circuit, the ringing reduction circuit comprising:
- a switching element inserted between the output signal line and a high-potential power line or a low-potential power line for supplying a power supply voltage to the output buffer circuit;
- and
- a ringing detector that outputs a signal for turning on the switching element when ringing occurs in the output signal and the output signal exceeds a reference level in a positive or negative direction.
(canceled)
Dependencies are inferred from the claim text.