An electronic device includes a processing unit with a memory, a JTAG interface with test-data-input and test­mode-select lines coupled to the processing unit, a bridge circuit, and a multiplexer circuit. The bridge circuit includes a serial communication interface receiving a serial data input signal which conveys an input serial data frame. The bridge circuit includes a serial-to-parallel converter circuit block receiving the input serial data frame, processing the input serial data frame to read first and second subsets of input binary values therefrom, and transmitting the first subset via a first output signal and the second subset via a second output signal. The multiplexer circuit selectively propagates a received test-data-input signal or the first output signal to the test data input line, and selectively propagates a test­mode-select signal or the second output signal to the test mode select line of the JTAG interface.

Electronic device comprising a memory accessible via a JTAG interface, and corresponding method of accessing a memory / Minnella, Filippo. - (2022).

Electronic device comprising a memory accessible via a JTAG interface, and corresponding method of accessing a memory

MINNELLA FILIPPO
2022

Abstract

An electronic device includes a processing unit with a memory, a JTAG interface with test-data-input and test­mode-select lines coupled to the processing unit, a bridge circuit, and a multiplexer circuit. The bridge circuit includes a serial communication interface receiving a serial data input signal which conveys an input serial data frame. The bridge circuit includes a serial-to-parallel converter circuit block receiving the input serial data frame, processing the input serial data frame to read first and second subsets of input binary values therefrom, and transmitting the first subset via a first output signal and the second subset via a second output signal. The multiplexer circuit selectively propagates a received test-data-input signal or the first output signal to the test data input line, and selectively propagates a test­mode-select signal or the second output signal to the test mode select line of the JTAG interface.
2022
File in questo prodotto:
File Dimensione Formato  
US11789078.pdf

accesso aperto

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 776.11 kB
Formato Adobe PDF
776.11 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2985284