单线网络控制远程SPI外设

制器（低电平有效CS ，DIN和CLK ） ，所需的1-Wire ®串行网络解决三个1线开关（ DS2413的） 。创建的第一个开关片选（低电平有效CS ） ，第二直接创造的串行数据线（DIN）和第三开关与帮助独占或门产生串行时钟（CLK） 。
Maxim > Design support > App notes > 1-Wire Devices > APP 4505
Maxim > Design support > App notes > Analog Switches and Multiplexers > APP 4505

Keywords: 1-wire networks, 1-wire switches, SPI peripherals, edge detector, one shot

Nov 11, 2010
APPLICATION NOTE 4505
One-Wire Network Controls Remote SPI Peripherals
By: Michael Petersen

Abstract: To produce the 3-wire SPI interface required by a MAX7221 display controller (active-low CS, DIN, and CLK), this 1-
Wire network serially addresses three 1-Wire switches (DS2413). The first switch creates Chip Select directly (active-low CS), the
second creates the serial-data line directly (DIN), and the third switch―with the he