How does CC1110 receive mode work without preamble/syncword detection?

bjorn.strandmark

Hi,

CC1110 datasheet states:

In receive mode, the demodulator and packet
handler will search for a valid preamble and
the sync word. When found, the demodulator
has obtained both bit and byte synchronism
and will receive the first payload byte.

What if preamble/syncword detection is disabled (MDMCFG2.SYNC_MODE=000)? Will the raw received bitstream be forwarded to application? So it can implement its own byte sync mechanism for legacy protocols?

BR / Björn

over 13 years ago

0 H Stewart over 13 years ago

Mastermind 8170 points

There may be a way, I'm following this to see what other write. My exprience when trying MDMCFG2.SYNC_MODE=000 is noise will fill the Rx FIFO buffer so fast that it will over flow faster than you can move the data.

0 bjorn.strandmark over 13 years ago in reply to H Stewart

Prodigy 80 points

Hi Stewart,

The fill rate of the FIFO should be decided by baudrate, and the legacy protocol is using a low baudrate. I am thinking about a double buffering scheme, where I receive one buffer while processing the other.

BR / Björn

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How does CC1110 receive mode work without preamble/syncword detection?