Klaus Schmidinger wrote:
e9hack wrote:
...
I think, you will found nothing about the antenna supply in the spec of
the demodulator (MT352) or the pll (TSA5523M). If the card has
implemented a switchable supply, they will use one of the GPIO-Pins
(GPP3 from MT352 or P0..P7 from TSA5523M). The band switch bytes for the
pll are 0x09 (VHF low), 0x0a (VHF high) and 0x08 (UHF). Possible, P3
(bit 3) is where you are searching for.
I'm afraid I don't quite understand what you mean by mentioning
the "band switch bytes". Are you saying that in the code sequence
if (params->frequency >= 48000000 && params->frequency <=
154000000) bs = 0x09;
if (params->frequency >= 161000000 && params->frequency <=
439000000) bs = 0x0a;
if (params->frequency >= 447000000 && params->frequency <=
863000000) bs = 0x08;
pllbuf[0] = 0x61;
pllbuf[1] = div >> 8;
pllbuf[2] = div & 0xff;
pllbuf[3] = 0xcc;
pllbuf[4] = bs;
in flexcop-fe-tuner.c I should do
bs |= 0x04;
to set bit 3?
Well, or rather
bs &= ~0x08;
to clear P3 (I guess I was off by one in my previous mail).
Klaus
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