Re: [iPAQ] 3870 Bluetooth module set to 1000000 bps

Hi,

Thanks a lot for the pinout :)

Since i'm short on time, and Tobias seems to be more active right now, I'll wait
for the results of the "crystal swapping" technique before attempting my own.

Anyway, I saw a SPI interface on the module. If this interface is not connected
to the ARM processor, it might be better to tweak, since no pcb tracks needs to
be cut. Moreover, it would work, no matter what baud rate the internal registers
are set to.

Is the protocol over the SPI similar to the uart? What should be the state of
"spi csb" to select "external master" clock?

Even better, is there a datasheet somewhere where I can read this info from and
stop bugging everyone? :)

Thanks for all the help,

Tobias Prousa wrote:

> Well, think this will help. But first I'm going to try the second
> approach with a slower crystal on the alsp module (see mailing list thread)
>
> Jamey Hicks wrote:
>
>> On Tue, 2003-12-02 at 09:52, Paulo Marques wrote:
>>
>>
>>> I've already opened up an iPaq to try and do it the
>>> "hardware-intensive way". However, I could not find anywhere, on the
>>> internet, the pinout for the ALPS module.
>>>
>>> If anyone can provide such pinout, I could try to connect the module
>>> to a "special home made" serial port (3.3V, ttl levels, etc.) to see
>>> if I can recover the internal registers to a usable value.
>>>
>>>
>>
>>
>> pin 1: gnd
>> pin 2: not connected
>> pin 3: not connected
>> pin 4: vdd
>> pin 5: pcm out
>> pin 6: vbus in/pcm_pwrdown
>> pin 7: usb detach
>> pin 8: pcm clk
>> pin 9: pcm in
>> pin 10: pcm sync
>> pin 11: gnd
>> pin 12: gnd
>> pin 13: gnd
>> pin 14: uart rx
>> pin 15: uart tx
>> pin 16: gnd
>> pin 17: usb wake
>> pin 18: not connected
>> pin 19: uart rts
>> pin 20: uart cts
>> pin 21: spi csb
>> pin 22: spi mosi
>> pin 23: spi iso
>> pin 24: spi clk
>> pin 25: rst
>> pin 26: not connected
>> pin 27: gnd
>> pin 28: gnd
>> pin 29: rf in/out
>> pin 30: gnd
>> pin 31: gnd
>>
>> 31 seems like an odd number of pins
>>
>> Hope this helps,
>> Jamey

-- 
Paulo Marques
Software Development Department - Restinfor, Lda.
Phone: +351 252 290600, Fax: +351 252 290601
Web: www.grupopie.com
"In a world without walls and fences who needs windows and gates?"