1. ug161 - 有些只有串口,有些有并行和串口。
去读。
S版本如图所示,它只有一个TD0输出......
2.建议通过上拉或下拉连接模式引脚(如果您想改变主意并调试电路板)。
否则,没有理由不直接连接它们。
3.电阻值旨在克服泄漏。
泄漏规格小于+/- 10uA,因此10K是好的。
完成不仅是输出,也是输入。
所以我不会使用任何东西,但推荐的是什么。
我经常看到470欧姆,但390,430,520或560欧姆都是可接受的值。
请勿直接驱动LED指示灯。
使用缓冲区从DONE中删除任何非cmos负载。
Austin Lesea主要工程师Xilinx San Jose
以上来自于谷歌翻译
以下为原文
1. ug161 -- some have serial only, some have parallel and serial. Go read. The S version is shown in the figure, and it only has a single TD0 output...
2. Mode pins are suggested to be connected through pullups, or pulldowns (in case you ever want to change your mind and debug the board). Otherwise, there is no reason to NOT connect them directly.
3. The value of the resistor is intended to overcome the leakage. The leakage specification is less than +/- 10uA, so 10K is fine.
4. Done is not only an output, but also an input. So I would not use anything but what is recommended. 470 ohms is what I often see used, but 390, 430, 520, or 560 ohms are all acceptable values. DO NOT DRIVE a LED DIRECTLY WITH DONE. Use a buffer to remove any non-cmos load from DONE.
Austin Lesea
Principal Engineer
Xilinx San Jose
1. ug161 - 有些只有串口,有些有并行和串口。
去读。
S版本如图所示,它只有一个TD0输出......
2.建议通过上拉或下拉连接模式引脚(如果您想改变主意并调试电路板)。
否则,没有理由不直接连接它们。
3.电阻值旨在克服泄漏。
泄漏规格小于+/- 10uA,因此10K是好的。
完成不仅是输出,也是输入。
所以我不会使用任何东西,但推荐的是什么。
我经常看到470欧姆,但390,430,520或560欧姆都是可接受的值。
请勿直接驱动LED指示灯。
使用缓冲区从DONE中删除任何非cmos负载。
Austin Lesea主要工程师Xilinx San Jose
以上来自于谷歌翻译
以下为原文
1. ug161 -- some have serial only, some have parallel and serial. Go read. The S version is shown in the figure, and it only has a single TD0 output...
2. Mode pins are suggested to be connected through pullups, or pulldowns (in case you ever want to change your mind and debug the board). Otherwise, there is no reason to NOT connect them directly.
3. The value of the resistor is intended to overcome the leakage. The leakage specification is less than +/- 10uA, so 10K is fine.
4. Done is not only an output, but also an input. So I would not use anything but what is recommended. 470 ohms is what I often see used, but 390, 430, 520, or 560 ohms are all acceptable values. DO NOT DRIVE a LED DIRECTLY WITH DONE. Use a buffer to remove any non-cmos load from DONE.
Austin Lesea
Principal Engineer
Xilinx San Jose
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