eMMC adapter question to vcc, vccq and 3.3V - GSM-Forum

huzein · 04-17-2014, 19:18

I have this eMMC adapter from Multi-Com and on this adapter there is for power 1.8V and 2.8V (see picture in attachment) to solder on pcb.

On some eMMC pinouts i see vcc, vccq and also 3.3V (as an example i have put the pinout of the N8000 to the attachment)

My question is:
from adapter pin 1.8V to which pin of vcc, vccq and 3.3V i shall solder?
the same question with adapter pin 2.8V.

or is it:

1.8V = vccq
2.8V = vcc
? = 3.3V

i hope to get an answer as soon as possible,
br

NoName® · 04-17-2014, 22:58

Hi , there to power lines:

VCC- 2,8...3.3V thats are minimum and maximum values.
VCCQ - 1,8V Power for IO bus.

So thats funny but truth 2.8V = 3.3V

huzein · 04-18-2014, 06:09

to understand it correctly: as you write 2.8=3.3 this means that my adapter can reach also the maximum value of 3.3V, yes?

br

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huzein · 04-18-2014, 09:16

furthermore on the emmc pinout of the samsung N8000 which i have uploaded in the first post shows pins for vcc and 3.3V. according to your answer it is

vcc = 3.3V.

so a mistake in the pinout? vcc is supposed to be vccq? or how is this pinout to understand?

br

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Ionel · 04-18-2014, 10:59

The emmc device have tolerance , and u can use 2,8v or 3,3 v , these are the tolerance to power up ur ic .

huzein · 04-18-2014, 11:55

thanks. would be great when somebody also clears my last question about the pinout of N8000.

br

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gencom · 01-03-2019, 21:31

1,8V ISP =
1,8V CARD=
2,8V CARD=
3,3V IO =

What is means, card or board

ejproduction · 10-08-2019, 05:16

emmc adapter easy jtag

10-08-2019, 05:16	#8 (permalink)
ejproduction Freak Poster Join Date: Mar 2011 Location: Honduras Posts: 171 Member: 1532892 Status: Offline Sonork: 1603006 Thanks Meter: 44	emmc adapter easy jtag Last edited by layder; 10-08-2019 at 23:32. Reason: merge posts

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04-17-2014, 22:58	#2 (permalink)
NoName® Product Supporter Join Date: Mar 2005 Location: China Posts: 3,338 Member: 129885 Status: Offline Sonork: 100:1603514 Thanks Meter: 6,202	Hi , there to power lines: VCC- 2,8...3.3V thats are minimum and maximum values. VCCQ - 1,8V Power for IO bus. So thats funny but truth 2.8V = 3.3V

04-18-2014, 06:09	#3 (permalink)
huzein No Life Poster Join Date: Nov 2006 Location: Germany Posts: 688 Member: 396421 Status: Offline Thanks Meter: 87	to understand it correctly: as you write 2.8=3.3 this means that my adapter can reach also the maximum value of 3.3V, yes? br Gesendet von meinem GT-I9100 mit Tapatalk

04-18-2014, 09:16	#4 (permalink)
huzein No Life Poster Join Date: Nov 2006 Location: Germany Posts: 688 Member: 396421 Status: Offline Thanks Meter: 87	furthermore on the emmc pinout of the samsung N8000 which i have uploaded in the first post shows pins for vcc and 3.3V. according to your answer it is vcc = 3.3V. so a mistake in the pinout? vcc is supposed to be vccq? or how is this pinout to understand? br Gesendet von meinem GT-I9100 mit Tapatalk

04-18-2014, 10:59	#5 (permalink)
Ionel No Life Poster Join Date: Sep 2004 Location: Romania Age: 42 Posts: 1,598 Member: 81232 Status: Offline Thanks Meter: 196	The emmc device have tolerance , and u can use 2,8v or 3,3 v , these are the tolerance to power up ur ic .

04-18-2014, 11:55	#6 (permalink)
huzein No Life Poster Join Date: Nov 2006 Location: Germany Posts: 688 Member: 396421 Status: Offline Thanks Meter: 87	thanks. would be great when somebody also clears my last question about the pinout of N8000. br Gesendet von meinem GT-I9100 mit Tapatalk

01-03-2019, 21:31	#7 (permalink)
gencom No Life Poster Join Date: Apr 2013 Location: Ordu TÜRKİYE Posts: 684 Member: 1918391 Status: Offline Thanks Meter: 73	1,8V ISP = 1,8V CARD= 2,8V CARD= 3,3V IO = What is means, card or board