How many off chip links on the G4-144pin

Technical discussions around xCORE processors (e.g. General Purpose (L/G), xCORE-USB, xCORE-Analog, xCORE-XA).
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DrFingersSchaefer
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How many off chip links on the G4-144pin

Postby DrFingersSchaefer » Wed Jan 13, 2010 6:28 pm

Hi guys,

I am suffering a small degree of confusion (nothing new there then). :roll:

Can someone give me a definitive answer as to how many on/off chip links are provided on the 144pin and 512pin G4 devices.

A clear tutorial on the ports from a what pins are allocatable to what might be useful too I have'nt got to these yet but feel some confusion already.

cheers

fingers
"Dr Fingers Schaefer, The Lobotomy Kid"
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leon_heller
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Postby leon_heller » Wed Jan 13, 2010 7:13 pm

The XS1-G4-512 has four pairs of XLinks (in/out) on each of all four XCores. The XS1-G4-144 has four pairs of XLinks (in/out) on each of two of the four XCores only (XCore0 and XCore 2). See Sections 2.1.2 and 2.1.3 of the data sheets.

Leon
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DrFingersSchaefer
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Postby DrFingersSchaefer » Sat Jan 16, 2010 5:37 pm

Thanks for the info Leon

The problem I was having was that I had read the docs and found them a touch contradictory if taken as read.

I had drawn the conclusion that the 144 device had 4 Bi-Di link sets and the 512 had 8.

Rather than your suggested 8 and 16. I think given your practical experience I will go with your understanding over mine.

The documentation on the ports/links and pins is'nt overly clear to the un-initiated.

Further questions, if the pins that do links are all in use as links (either 4 wire or 10 wire), can the other pins be used concurrently for IO ?

Again I have read the docs and find them confusing, holey or contradictory.
"Dr Fingers Schaefer, The Lobotomy Kid"
Caesar ad sum iam forti
Brutus ad erat
Caesar sic in omnibus
Brutus sic in at
:ugeek:

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