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Configuring multi-bit slave addressing on a serial bus using a single external connection

An external connection and connection technology, applied in the direction of instruments, electrical digital data processing, etc., can solve problems such as disappearance and the weakening of the HW addressing function.

Active Publication Date: 2010-06-30
MICROCHIP TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, a problem with current state of the art HW addressing is that it uses multiple external connections (pins) on the device's integrated circuit package when more than two devices need to be uniquely addressed
As IC package size decreases, so does the number of external connections (pins), so the ability to maintain HW addressing functionality for multiple devices diminishes or even disappears

Method used

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  • Configuring multi-bit slave addressing on a serial bus using a single external connection
  • Configuring multi-bit slave addressing on a serial bus using a single external connection
  • Configuring multi-bit slave addressing on a serial bus using a single external connection

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Embodiment Construction

[0022] Referring now to the drawings, details of certain exemplary embodiments are schematically illustrated. Like elements in the drawings will be denoted by like numerals, and like elements will be denoted by like numerals with different lowercase letter suffixes.

[0023] see figure 1 , depicts a schematic block diagram of an integrated circuit device with a single external connection for configuring a multi-bit address in conjunction with a serial data bus, according to certain exemplary embodiments of the present invention. An integrated circuit device, generally indicated by reference numeral 100 , may include analog switch 106 , analog-to-digital converter (ADC) 110 , address register 112 , serial interface and control logic 114 , internal resistor 116 and main function 104 . Additionally, a power-on reset (POR) 108 and / or a brownout detector (not shown) may be incorporated with the aforementioned components and may be fabricated on the integrated circuit die 102 and ...

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Abstract

Unique addresses for a plurality of devices may be programmed through a single external connection (pin) on each device by using a one of a plurality of different analog voltage or current values on the single external pin in combination with a serial clock of a serial data bus for each device requiring a unique binary address. The unique binary address is stored in the device after detection of certain number of clocks on the serial data bus. Once the unique binary address has been stored in the device, the single external connection may be used for another purpose such as a multifunction external connection. This unique binary address may be retained by the device until a power-on-reset (POR) or general reset condition occurs. Address detection and address load commands on the serial bus may also perform the same address definition and storage functions.

Description

[0001] Related Patent Applications [0002] This application asserts that Patrick K. Richards, Vincent Quiquempoix, and Gabriel Bellini, filed July 27, 2007, Gabriele Bellini, commonly-owned U.S. Provisional Patent No. 60 / 952,401 entitled "Configuring Multi-Bit SlaveAddressing On A Serial Bus Using A Single Pin" Priority to the application, the provisional application is hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to digital devices, and more particularly to configuring multi-bit addressing for multiple devices coupled to a serial bus, where each of the multiple devices uses only a single external connection (pin) to for defining a multi-bit address to be configured for a respective one of the plurality of devices. Any one or more of the single external connections (pins) may be re-used for other purposes after the multi-bit addresses of the multiple devices have been configured. Background technique [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
CPCG06F13/4072
Inventor 帕特里克·K·理查兹文森特·奎奎姆普瓦加布里埃莱·贝利尼
Owner MICROCHIP TECH INC