Hi,

Does anyone have any working knowledge of the RF transceiver?

The spec sheet is contradictory, and VERY lacking in programming detail.
EG: (Initialization...)
1.  Set FIFORSTREG.  (WHAT does that mean?  There are 8 bits, which ones
need to be set?)
2.  Enable sync. Latch (from) FIFORSTREG.  (I can figure this one out.)
(Why does it require two operations on the same register?)

There are 2 versions of "C" code for the device which differ also.
(and they don't follow all the initialization steps in the specs.)

I have initialized the device using the C code as a template.
When I turn on the transmitter to send data, it never drops it's interrupt
line
To signal the byte has gone out.

Details:  When I turn on the transmitter it does drop the IRQ line
Signaling the transmit buffer is empty.
On filling the buffer, the IRQ goes away and never drops again.
(Neither does the SDO line change...)
Leading me to believe it is not transmitting, but the current goes up.

I am using the PICtail plus daughter boards.
I can get a reasonable status word returned after power up.
(SPI must be working.  Baud Rate is 2 MHz)

So seriously, is there a REAL spec sheet, not written by the analog guys?
(I'm using DS70590B)

Tom

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