[Arm-netbook] a10 module and jtag?

[Henrik Nordström]

fre 2011-12-23 klockan 21:02 +0000 skrev lkcl luke:

>  pins are
> JTAG_MS0 JTAG_CK0 JTAG_DO0 JTAG_DIO JTAG_MS1 JTAG_DI1 JTAG_DO1
> JTAG_CK1 and JTAG_SEL ok actually some of the JTAG pins can be
> multi-function multiplexed.
> 
> so, interestingly, it looks like there are 2 JTAG ports!

Any idea what they are used for?

> > I've seen a bunch of devices which export their microusb as a hub
> > including access to the jtag, serial console and gadget, is this
> > possible for us?
> 
>  doesn't look like it.  no mention of JTAG other than the pin-pads and
> a brief overview with description of each pin, in the datasheet.  it's
> _that_ kind of datasheet :)  however, we know that information is
> missing from it (it's more like "brief reminder notes") so there could
> be something else.

Well, those boards that I have seen actually have a hub + ftdi chip for
console + jtag. But that adds cost and no idea how to make that work in
combination with OTG. But works well for device ports.

Regards
Henrik