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This seems nuts to me.
[RFC] etc: Replaced PHY driver by a small dmx board fixup – Patchwork
It is cheap, low power, available, and they give out the datasheets without an NDA. I mean, what could possibly be NDA-worthy in the datasheet for a 4 year old part that implements a technology GbE which is nearly a decade old? We didn’t think it was worth incorporating in development boards, or modules, if our customers couldn’t get the basic information.
On 17 Dec, The fact that other users have been forced to redact pages of schematics tells me that this is a serious problem. Can you imagine how hard it would be to design anything if every chip you used had NDAs attached to it?
On Dec 17, 2: Introduction to Microcontrollers Mike Silva. Plus, all the source code is open as well, so who knows what secret registers that might reveal.
| Gigabit Ethernet PHY without NDA?
An NDA might be more of a problem for the software; device driver source typically contains information about many of the PHY internal registers. I can only hope these companies stop being so snobbish as they get rapid volume turnoff in the current recession in their favoured consumer markets. All claim to use about half the power, are much smaller, and don’t need the 1.
The problem is that all of them require an NDA just to see the datasheet. Create free account Forgot password? Besides, I don’t want to reward such bad behavior by these chip companies.
I don’t see how this clashes with open source hardware though.
We have had the same problem and partially why we have not as yet got a phy module at gigabit available. I have found candidates from Marvell, Vitesse, and Broadcom.
Gigabit Ethernet PHY without NDA?
For example, I found this schematic containing an 88E in less than a minute of searching: The other problem with these companies is getting smallish numbers of chips is generally expensive and difficult.
John Adair Enterpoint Ltd. Micrel has nothing gigabit on their website. The schematic merely shows the pinout. It has 4 problems: Dattasheet in Sign in Remember me Forgot username or password? The pinout isn’t covered by the NDA, as that information is already published in schematics that you can download. I am not a lawyer, and you should read the terms of the NDA very closely. Anybody have any experience with it?