Thanks Meter 2718
Join Date: Jan 2011
Location: National Capital Region
Originally Posted by joederp
And the Si4705 uses a 32.7MHz crystal, but it can also take
a reference clock from 31.130 to 40.000
Can you read RDS through the SDIO?
32,768 Hz (2^15)
Hardware wise, yes all si470x registers, including RDS registers, are accessed via SDIO.
The V4L driver accesses the si470x registers.
Samsungs proprietary Silicon Labs/high end specific FM API accesses the V4L driver.
My Spirit FM app, like the Samsung app, can access the Samsung API. But Spirit can also speak directly to the V4L driver, which is preferred.
So there are multiple software layers between an app and the hardware pins such as SDIO.
I'd be interested to access some unique features of the si4705, such as operation down to 64 MHz. but I don't think the V4L driver allows it, as it's generic to si470x.
Spirit2 in early preview ! : http://forum.xda-developers.com/show....php?t=2537861
Spirit FM: Digital Audio, RDS, Media Controls+Much More
(Q+A, Compat list, FAQ, many info links...)