AR# 35251

12.1 EDK, XPS_IIC - Does the XPS_IIC core support clock stretching?

描述

Does the xps_iic support clock stretching as described in the Phillips data sheet?

解决方案

Xilinxuses a different term inXPS_IICdata sheet:

Throttle Description

The Philips I2C-bus Specification permits devices to throttle (suspend)
data transmission on the bus by holding the SCL line low for an indefinite
period of time.
(DS606 December 2, 2009, page 24)

From the Philips spec:

3.9 Clock stretching

Clock stretching pauses a transaction by holding the SCL line LOW. The
transaction cannot continue until the line is released HIGH again.
(UM10204, I2C-bus specification and user manual, Rev. 03, 19 June 2007,
http://www.nxp.com/acrobat/usermanuals/UM10204_3.pdf)

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AR# 35251
日期	12/15/2012
状态	Active
Type	综合文章
器件	Spartan-3 Spartan-3 XA Spartan-3A Spartan-3A DSP Spartan-3AN Spartan-3E Spartan-6 LX Spartan-6 LXT Virtex-4 FX Virtex-4 LX Virtex-4 QPro/R Virtex-4 SX Virtex-5 FXT Virtex-5 LX Virtex-5 LXT Virtex-5 SXT Virtex-5 TXT Virtex-5Q Virtex-6 CXT Virtex-6 HXT Virtex-6 LX Virtex-6 LXT Virtex-6 SXT More Less
Tools	EDK - 10.1 EDK - 10.1 sp1 EDK - 10.1 sp3 EDK - 11.1 EDK - 11.2 EDK - 11.3 EDK - 11.4 EDK - 11.5 EDK - 12.1 More Less
IP	XPS IIC Bus Interface

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AR# 35251

12.1 EDK, XPS_IIC - Does the XPS_IIC core support clock stretching?

描述

解决方案