公开(公告)号：US20210303267A1

公开(公告)日：2021-09-30

申请号：US17203591

申请日：2021-03-16

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Xiao Kang JIAO ,  Fabio Giuseppe DE AMBROGGI ,  Loris LUISE

IPC: G06F7/544 ,  G06F3/06

Abstract: A method includes retrieving a plurality of datasets from respective memory registers of a memory and storing the retrieved plurality of datasets in respective register portions of a first register. A dataset of data-processing coefficients are stored in a second register. First processing is applied using, as the first operand, a first sub-set of dataset elements stored in the first register, and using, as the second operand, the data-processing coefficients, obtaining a first result. Second processing is applied using, as the first operand, a second sub-set of dataset elements stored in the first register comprised in a second window having a size equal to the dataset size, and using, as the second operand, the replica of the dataset of data-processing coefficients, obtaining a second result. An output is generated based on the first and second results. The first and second processing may perform multiply accumulate (MAC) operations.

公开(公告)号：US20220414420A1

公开(公告)日：2022-12-29

申请号：US17360986

申请日：2021-06-28

Applicant: STMICROELECTRONICS S.r.l. ,  STMicroelectronics International N.V.

Inventor： Loris LUISE ,  Surinder Pal SINGH ,  Fabio Giuseppe DE AMBROGGI

IPC: G06N3/04 ,  G06F9/30 ,  G06F7/57

Abstract: Data structure and microcontroller architecture performing binary multiply-accumulate operations using multiple partial copies of weights. Destination-register location, source-register location, and weight-register location are received. Using the weight-register location, a sub-set of the weight bits is copied a select number of times based on a filter index value that is received. Each copy of the sub-set of weights is executed in parallel. Using the source-register location, a sub-set of the input bits is selected based on the size of the sub-set of weights, wherein the sub-set of input bits is shifted one bit from a previous sub-set of input bits. XOR operation is performed on each corresponding bit in the copy of the sub-set of weights with each corresponding bit in the selected sub-set of input bits. In a corresponding destination sub-location, output of each XOR operation is aggregated with each other and with current value of the corresponding destination sub-location.