Thread: [Neuros 442 Linux Main] FW: New drop of schematics

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-----Original Message-----
From: Bob Faskos [mailto:bf...@ne...]=20
Sent: Monday, September 26, 2005 8:20 PM
To: Michael Gao
Cc: Joe Born
Subject: Re: New drop of schematics

Michael, Joe,

See my answers below.

Bob

Michael Gao wrote:

	One more question to the list,
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	3. I don't see a Real Time Clock included, is this by design?
	Bob: The real time clock lives in the MSP430 microcontroller.
Someone will have to write it.
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________________________________

	From: Michael Gao
	Sent: Mon 9/26/2005 12:32 PM
	To: Bob Faskos; Joe Born
	Subject: RE: New drop of schematics
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	Bob,
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	I have a couple of questions, at this point, I only concern what
will be actually available in next version 442,
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	1. USB Device Interface
	a) In your Spec, you said "The DM320 will mediate and arbitrate
all data transfers to and from the USB bus...", does this mean a device
driver (MSC for example) is needed on DM320? I thought USB is a complete
HW solution, SW USB driver will be a schedule killer unless we have some
solid ref code.
	Bob: We talked about this choice before. There is no USB-to-ATA
bridge there, the DM320 ARM need to "drive" the NET2272 chip. In the
latest Linux releases there is support for this chip but, of course, it
has to be "massaged" back into our board. This is a great opportunity
for some collaboration with the OS community.
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	b) Will USB be able to power up the device?

Bob: The USB Host interface will be able to power up a USB device.
USB Gadget interface does not provide power.

	c) Will USB be able to charge the device?
	 Bob: Yes. This is a function of the device, not the host.
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	2. Vedio/Audio interface
	Other than using a different Audio ADC/DAC, are we changing data
path compared to Ingenient's ref design? I am wondering how much low
level code can be reused.
	Bob: The ADC and DACs are different enough that the DSP code
will have to be changed. You need to bring this issue up with the DSP
code writesrs.
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	Thanks,
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	/MG
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________________________________

	From: Bob Faskos [mailto:bf...@ne...]
	Sent: Mon 9/26/2005 1:28 AM
	To: Joe Born; Michael Gao
	Subject: New drop of schematics
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	See attached.
	This one has a lot more information that will be needed for
layout and a
	few fixes.
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	Bob.
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Thread: [Neuros 442 Linux Main] FW: New drop of schematics

neuros442linux-main