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Author Topic: two grounds for sd card...  (Read 1997 times)
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raja1982y
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« on: November 27, 2007, 03:16:38 03:16 »

I have attended a seminar once on SD card controller. The card has two grounds "vss1 and vss2" and one voltage source "vdd". what advantage one gets with two grounds?

-raja
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uppic
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« Reply #1 on: November 27, 2007, 08:13:59 08:13 »

"vss1 and vss2" are the same greetings
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Trishool
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« Reply #2 on: November 29, 2007, 03:15:07 03:15 »

I have attended a seminar once on SD card controller. The card has two grounds "vss1 and vss2" and one voltage source "vdd". what advantage one gets with two grounds?

-raja

Raja , Vss means 0V , Vss1 should be for connecting to earth ground , and Vss2 for connecting the GND.

Hope this helps

Ts
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