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Altera_Forum
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18 years ago

Controlling proto1_RESET on NiosII Dev Board

Hi, I am trying to communication with a HDD over the Proto1 connector on a NiosII Dev Board Cyclone II Edition. The reset is pin 1; however, pin 1 is hard-wired to pin 56 of U3 which provides the...
Altera_Forum's avatar
Altera_Forum
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18 years ago

Hi FvM, can you go into a little more detail (I am still learning how to communicate with the HDD). The ATA manual states that "RESET- (Drive reset) This signal from the host system shall be asserted for at least 25 usec after voltage levels have stabilized during power on and negated thereafter". I was under the assumption that I had to control the RESET- pin with this timing.

I am a little confused at what you mean by the Software Reset. I just noticed that there is a DEVICE RESET command that I can send to the HDD. Is this what you meant. I will try this out next. Thanks for the fast reply, -Ben