Communication system, communication system control method, and program

Patent metadata

Field	Value
Publication number	US-10740268-B2
Application number	US-201916503056-A
Country	US
Kind code	B2
Filing date	Jul 3, 2019
Priority date	Oct 1, 2015
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

Communication systems and communication control methods are disclosed. In one example, a slave device belonging to a group of devices to which arbitration is applicable sequentially transmits a start bit and a first address including a first bit having a value different from a corresponding first bit of predetermined pattern data. A master device sequentially transmits the start bit and the predetermined pattern data. The master device arbitrates the master device and the first slave device based on the value of the first bit.

First claim

What is claimed is:

1. A communication system comprising:
a master device configured to sequentially transmit a start bit indicating communication start and predetermined pattern data, and to transmit and receive data;
a first slave device including a first bus characteristic register, the first slave device being configured to perform at least one of an in-band interrupt request or a secondary master request; and
a second slave device including a second bus characteristic register, wherein the second slave device is not configured to perform the in-band interrupt request or the secondary master request,
wherein the first bus characteristic register of the first slave device stores a first setting information indicating that the first slave device is configured to perform the secondary master request,
the second bus characteristic register of the second slave device stores a second setting information indicating that the second slave device is not configured to perform the secondary master request, and
the first bus characteristic register of the first slave device stores a third setting information indicating that the first slave device is configured to perform the in-band interrupt request.

2. The communication system according to claim 1 , wherein the second bus characteristic register of the second slave device stores a fourth setting information indicating that the second slave device is not configured to perform the in-band interrupt request.

3. The communication system according to claim 2 , wherein the first setting information is stored in a set of one or more bits at a first designated location in the first bus characteristic register.

4. The communication system according to claim 3 , wherein the second setting information is stored in a set of one or more bits at the first designated location in the second bus characteristic register.

5. The communication system according to claim 4 , wherein the third setting information is stored in a set of one or more bits at a second designated location in the first bus characteristic register.

6. The communication system according to claim 5 , wherein the fourth setting information is stored in a set of one or more bits at the second designated location in the second bus characteristic register.

Assignees

• Sony Corp

Inventors

• Takahashi Hiroo
• Koshisaka Naohiro
• Lee Sonfun

Classifications

• G06F13/4291 Primary

  using a clocked protocol · CPC title

• G06F13/4282

  on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247) · CPC title

• G06F13/362

  with centralised access control · CPC title

• G06F13/364 Primary

  using independent requests or grants, e.g. using separated request and grant lines · CPC title

• G06F2213/0052

  Assignment of addresses or identifiers to the modules of a bus system · CPC title