如何在PROM上选择串行模式？

按下“程序”按钮后，弹出设置窗口，可以将内存配置为主/从，串行/并行等：
在原帖中查看解决方案



以下为原文

After pressing "Program" button the settings window pops up, where the memory can be conficured as master/slave, serial/parallel and others:

View solution in original post

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

@austin感谢您的回复。
对于配置。
舞会我的意思是一个特定的设备（见原帖）。
那个可以是seroal或平行的。
因此，我想知道如何将其设置为串行模式。



以下为原文

@austin  Thank you for the reply. For the config. prom I meant a specific device (see original post). That one can be seroal or parallel. Therefore, I wanted to know how to set it to serial mode.

@austin另外，是否有专门针对spartan6 lx25的单独数据表，或者只有一个家庭版？
上图中的注释表示在特定器件的数据表中查找上拉电阻值（对于DONE引脚）。
我似乎查看了大多数Spartan6系列的斑点表，但没有找到任何参考。



以下为原文

@austin  Also, is there a separate datasheet exclusively for the spartan6 lx25, or there is only the family one? The note from the schematic above says to look for the pull-up resistor value (for DONE pin) in the datasheet of the specific device. I seemed to look over most of the Spartan6 family specksheets, but could not find any reference to that.

ug380，
完成时上拉电阻为330欧姆。
一个配置用户指南涵盖了该系列中的所有部件。
Austin Lesea主要工程师Xilinx San Jose



以下为原文

ug380,
 
330 ohms for pullup on DONE.
 
One configuration users guide covers all parts in the family.
 
 
Austin Lesea
Principal Engineer
Xilinx San Jose

@austin，我仍然不明白如何使并行PROM在串行模式下工作。
我想使用XCF08PFS48C，它能够进行串行和并行接口。
因此，我假设我应该像在串行接口的原理图中那样将它连接到FPGA（参见原始文章中的scematic）。
但是如何让PROM通过引脚0输出所有数据呢？
没有描述如何为存储器选择串行/并行模式。



以下为原文

@austin , I still do not understand how to make a parallel PROM to work in serial mode. I want to use XCF08PFS48C, which is capable of serial and parallel interfacing. Thus, I assume that I should connect it to the FPGA like in the schematic for the serial interface (see the scematic in the original post). But how do I make the PROM output all data through pin 0? There is no description how to select serial/parallel mode for the memory.

按下“程序”按钮后，弹出设置窗口，可以将内存配置为主/从，串行/并行等：



以下为原文

After pressing "Program" button the settings window pops up, where the memory can be conficured as master/slave, serial/parallel and others: