On Wednesday 20 July 2005 01:55, Jeremy Hall wrote: > In the new year, Johannes Stezenbach wrote: > > Jeremy Hall wrote: > > > I am looking at some code that attempts to change the voltage within > > > 8ms. I recently swapped > > > > The registers are described in the stv0299 data sheet, but that > > alone doesn't help you because you need to know the circuit around > > the stv0299 to set them. This should be specifed in the frontend > > (tin box) data sheet. > > What does the "tin box" datasheet mean? You need a seperate manual for the tinbox on the card as well as the frontend manual. It tells you the specifics that the particular manufacturer has used in construction of the tinbox - e.g. what GPIOs are used to control the analogue frequency-dependant circuitry. What is the manufacturer's details on the tin box? I might have the doc lying about... > I'm used to seeing datasheets that say: > > In order to set the voltage, set the following registers under the > following constraints and here's what the bits mean. Hmm, it seems very rare to get that - in my experience anyway :( Hence the multimeter comment. > Are you willing to help me debug this? I'll try and help as well if you want.
