DM816x : Detecting speed grade.

n-Houtteilip

DM8168 has the control status register at physical address 0x48180600 that reports what I believe to be die revision, correct ?

0 -> rev 1.0

1 -> rev 1.1

2 -> rev 2.0

3 -> rev 2.1

How about speed grade. Can this be determined programmatically or we must know ahead of time?

Also it's assumed that dm8169 is equivalent to CYG4 in the documentation; is this assumption correct? Is there a document that identifies the 8169 as a 8168 with CYG4 ?

over 12 years ago

0 Viet Dinh over 12 years ago

TI__Genius 15310 points

Hi n-Houtteilip,

You cannot tell the speed grade by register but only by package. Please refer to Data Manual for the speed in each package. The CYG is label on the device package.

BR,

Viet

0 HardikShah over 12 years ago in reply to Viet Dinh

TI__Mastermind 20245 points

There is no way to detect speed grade from register. You should look at package to get the speed grade. Register only tells chip revision.

0 Sylvain Leduc over 12 years ago in reply to HardikShah

Prodigy 10 points

I have a suggestion for future products and/or revisions of existing products equipped with an e-fuse.

Would it be feasible to burn the device speed rating into the e-fuse as the MAC addresses are?

It would be much appreciated.

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DM816x : Detecting speed grade.