CYUB3014的最大GPIO切换速度是多少？

它应该在720kHz左右使用SDK。1MHz应该是最大可能的，我们正在尝试提供寄存器访问来做到这一点。
当做，
阿南德



     以下为原文
  It should be around 720kHz using the SDK. 1MHz should be the max possible we're trying to provide register access to do that.
    Regards,
    Anand

阿西，我想它一定比1MHz高。
Atmel的ARM926EJ-S SoC或SAM7 SoC的IO切换速度约为系统时钟的1/4～1/5。
所以我认为，FX3的IO切换速度是相同的（约25MHz）。但现在我没有芯片，不能测试。
任何人都有真正的结果吗？



     以下为原文
  ASSI,i think it must be higher than 1mhz.
    Atmel's arm926ej-s SoC or sam7 Soc has a io toggle speed at about  1/4~1/5 of the system clock.
    So I think that fx3's io toggle speed is the same(at about 25mhz).But now i has not the chip,can't test it.
    anyone has the real result?

将“00101010101010…”写入PIN



     以下为原文
  write "00101010101010..." to the pin

我用FX3DVK测试了它，并用示波器测量了GPIOTGOGLE的速度。最大翻转FRQ大约为270千赫，通过SDK编写一个0101010到GPIOPin的序列。如果你想模拟SPI读访问，那么这个切换频率只有210千赫，因为需要GPIO读取。也许有一种更快的方法来实施，并且有人有一个好主意。
关于ULI



     以下为原文
  I have tested it with a fx3 DVK and measured GPIO toggle speed with an oscilloscope. The max. toggle freq is about 270 kHz write a sequence of 0101010 to a GPIO Pin via SDK. If you want to simulate a SPI-Readaccess then this toggle frequence is only 210 kHz because of the needed GPIO-Reads. Perhaps there is a faster way to implement and someone has a good idea.
    Regards Uli

可悲的是，我所有的测试显示最大切换速度是一个GPIO引脚1mhz，…如果你玩更多然后一个GPIO你必须把这个频率的一些改变引脚，这真糟糕。GPIOs没有可能的副输出。另一方面，GPIO输入你可以阅读GPIO（00-31，和32-59）引脚那么整个60输入在2步（500kHz）
我还测试了McToin是否安排了混乱……好像不是（你达到相同的速度或无螺纹的用法）
改变GPIOCROK设置不会改变事情…我想只有GPIO contorler接口与/运行速度的GPIO绝对没有
只有一种可能，那就是：加快直接登记访问，我不知道如何实现这个平台上（没有源代码，…和SDK只有在目标文件所以没有挖的有太多，我习惯使用ASM的MCU，也更熟悉Atmel然后柏），但无论如何，输出寄存器不集在一起作为输入寄存器，最大频率划分的站在那里。…加快这个方法将可能只有某种错误在SDK的API
P.S.我使用CYSUB3014（DVK板CYSUB3KIT-1001）
ARM时钟“200兆赫”
GPIO时钟“200兆赫…正如我之前提到的这个无关的输入/输出速度



     以下为原文
  Sadly all my tests reveal max toggle speed is 1MHz for a single GPIO pin,... if you play with more then one GPIO then you must divide this frequency by number of changed pins, which sucks. there is no possible paralell output for GPIOs ... on the other hand fo GPIO inputs you can read GPIO (00-31, and 32-59) pins at once  so whole 60 inputs at 2 steps (500KHz)
    also i tested if MCU thread sheduling mess things up ... it seems that not (you achieve the same speed with or without threads usage)
    change of GPIO clock settings do not change things .... i assume its only for GPIO contorler interface and have absolutely nothing with GPIO in/out operation speed
    there is only one possible speed up and that is: direct register access which i donot know how to achieve on this platform (there is no source code ,... and SDK is only in object files so no diging there too, and i am used to use asm for MCUs, and also more familiar with Atmel then Cypress), but anyway the output registers are not groupped together as input registers so the division of max frequency stands there. ... speeding up with this aproach would be posible only if there is some kind of bug in SDK API
    P.S. I am using CYUSB3014 (DVK board CYUSB3KIT-001)
    ARM clock `200MHz
    GPIO clock `200MHz    .... as i mentioned before this has nothing to dowith input/output speed

嗨，哈里，
你是对的。请让我知道，如果你想做寄存器级访问，以提高速度一点点。
FX3 GPIO寄存器在FX3程序员手册的第9.2节中描述。
谢谢，
Sai Krishna。



     以下为原文
   Hi Hali,
     You are right. Please let me know if you want to do the register level access to improve the speed by a little bit.
     FX3 GPIO Registers are described in the section 9.2 of Programmers manual of FX3.
     Thanks,
     Sai Krishna.

嗨，哈里，
您是否已经在StaseFraseLtFx3SDK固件SerialIFiFixCyfxUsBigIpMoMoD＆GT中看到了SPI GPIO示例？有一个定义使用直接寄存器成功或API成功。
当做，
隆皮



     以下为原文
  Hi Hali,
    did you already have seen the SPI GPIO example in the instatlation folder  ? There is a define which uses direct register success or API success.
    regards,
    lumpi