Abstract:
The invention relates to a peripheral devices connecting system with priority arbitration, comprising at least a connection matrix connected to a plurality of peripheral devices (P1,P2,...,Pn) capable of transmitting a signal to be arbitrated, in particular an interrupt enable signal. The system of this invention comprises first (DCA) and second (DCB) connection matrices which are connected to each other through a plurality of logic gates (PL1,PL2,...,PLn) having a progressive number of inputs, for parallel transmitting a plurality of signals to be arbitrated, in particular interrupt enable signals (IE01,IE02,...,IE0n) issued from the peripheral devices (P1,P2,...,Pn), the first (DCA) and second (DCB) matrices having respective inputs and outputs connected directly to the plurality of peripheral devices (P1,P2,...,Pn). The invention also relates to a special connection matrix for a microcontroller-emulating chip, which includes a peripheral devices connecting system with priority arbitration (1) according to the invention.
Abstract:
It is described a successive approximation analog-to-digital converter (1). The analog-to-digital converter comprises a first generator (20) of a first analog value (S6) according to a configuration signal (S3), when the analog-to-digital converter is operating in a first phase (t 0 , t 1 , t 2 , t 3 , t 4 ) of a test mode, comprises a digital-to-analog converter (40) adapted to generate a second analog value (S7) according to a control signal (S1), when the analog-to-digital converter is operating in a second phase (t 5 , t 6 , t 7 , t 8 ) of the test mode, comprises a second generator (30), from the comparison of the first analog value with respect to the second analog value, of a digital value (S N ) according to a successive-approximation algorithm, when the analog-to-digital converter is operating in the second phase of the test mode. The analog-to-digital converter further comprises a controller (50) adapted to receive a signal (S4) indicating the test mode; the controller is adapted to generate in the first phase the configuration signal (S3), is adapted to receive in the second phase the digital value (S N ) and generate therefrom the control signal (S1) for controlling the generation of the second analog value according to the successive-approximation algorithm, and it is adapted to generate, from the digital value, an alarm signal (S5) indicating a failure within the analog-to-digital converter or indicating a degradation of the performance of the analog-to-digital converter.