Circuit device with clock pulse detection facility
AssigneeInfineon Technologies AG
InventorsAndre Schaefer, Johann Pfeiffer, Kasimierz Szczypinski, Joachim Schnabel
Life of this patent
Estimating the term…
Abstract
The invention refers to a circuit device (1) with at least one connection (3b), to which a clock pulse (/CLK, /CLKT) can be applied, whereby the circuit device (1) also comprises a clock pulse detection facility (2) for detecting whether there is a clock pulse (/CLK, /CLKT) present at the connection (3b), or whether there is no clock pulse (/CLK, /CLKT) present at the connection (3b).
Claims10
A circuit device (1), comprising at least a first connection (3a) and a second connection (3b), adapted to receive a single clock pulse (CLK, CLKT) at the first connection (3a), and adapted—alternatively to the single clock pulse (CLK, CLKT)—to receive a differential clock pulse (CLK, CLKT, /CLK, /CLKT) at the first and second connections (3a, 3b), and a detection facility (2) to detect which kind of clock pulse (CLK, CLKT), (CLK, CLKT, /CLK, /CLKT) is received, the detection facility (2) having a first state, if a differential clock pulse (CLK, CLKT, /CLK, /CLKT) is received at the first and second connections (3a, 3b), in which a first output signal is provided, and a second state, if a single clock pulse (CLK, CLKT) is received at the first connection (3a), in which a second output signal different than the first output signal is provided.
A circuit device (1) comprising:
- at least a first connection (3a), to which a clock pulse (CLK, CLKT) can be applied, and a second connection (3b), to which a clock pulse (/CLK, /CLKT) can be applied;
- a detection facility (2) which in determining whether a clock pulse (/CLK, /CLKT) is present at the second connection (3b), determines whether there are differential clock pulses (CLK, CLKT;
- /CLK, /CLKT) present at the connections (3a, 3b), or whether there is a single clock pulse (CLK, CLKT) present at the first connection (3a), but not at the second connection (3b);
- a comparison device (24) for comparing the signal present at the connection (3b), in particular the clock pulse (/CLK, /CLKT) applied thereto, with a reference signal (VREF);
- and
- a counter device (7), in particular for detecting the number of pulses, particularly clock pulse detection signals, emitted by the comparison device (24).
A semi-conductor component that comprises at least one circuit device (1) comprising:
- at least a first connection (3a) and a second connection (3b), adapted to receive a single clock pulse (CLK, CLKT) at the first connection (3a) and adapted—alternatively to the single clock pulse (CLK, CLKT)—to receive a differential clock pulse (CLK, CLKT;
- /CLK, /CLKT) at the first and second connections (3a, 3b);
- and
- a detection facility (2) to detect which kind of clock pulse (CLK, CLKT), (CLK, CLKT;
- /CLK, /CLKT) is received,
- the detection facility (2) having a first state, if differential clock pulses (CLK, CLKT;
- /CLK, /CLKT) are received at the connections (3a, 3b), in which a first output signal is provided, and a second state, if a single clock pulse (CLK, CLKT) is received at the first connection (3a), in which a second output signal different than the first output signal is provided.
Dependencies are inferred from the claim text.