Si570 SW ( bylo Citac N s 74AC161)

[Zuffa Jan]

Tu je skript co som narychlo zosmolil aby som overil, ake rozsahy pokryje deliaci pomer:

unsigned long long int freqtmp;

	unsigned long long int HS_Div[6] = {4,5,6,7,9,11};
	char bfound;

	unsigned long long int i, k, m, n, o;
	for(m = 10000000; m < 260000000; m = m+ 10000)
	{
		bfound = 0;
		for(i = 1; i < 6; i++)
		{
			o = HS_Div[i]*m;
			for(k = 1; k < 130; k=k+2)
			{
				if (k == 3) k = 2;

				freqtmp = k*o;
				if((freqtmp >= 4850000000) && (freqtmp <= 5670000000))
				{
					//printf("Fout=%010d N1=%03d HS_DIV=%02d\n", freqtmp, k, i);
					bfound = 1;
					break;
				}
			}
			if(bfound == 1) break;
		}
		if(bfound == 1)
		{
			//printf("Fout=%08d N1=%03d HS_DIV=%02d\n", m, k, i);
			//getchar();
		}
		else
		{
			printf("Fout=%012d not available\n", m);
			//getchar();
		}	
	}

ak je v nom chyba tak si mozem nasypat popol na hlavu :)


Si570 ide od 10MHz.
takze ak vydelim rozsah 10-100Mhz / 10 dostanem rozsah 1-10MHz s 10x jemnejsim krokom
tu potrebujem 74AC, pokracujem opat delenim 1-10MHz / 10 dostanem 0.1- 1Mhz s 100x jemnejsim krokom atd....
v dalsich kaskadach uz by stacili aj pomalsie IC, nie vsak u synchronneho.

j.

-----Original Message-----
From: hw-list-bounces na list.hw.cz [mailto:hw-list-bounces na list.hw.cz] On Behalf Of Jan Waclawek
Sent: Monday, March 04, 2013 7:04 PM
To: HW-news
Subject: RE: Si570 SW ( bylo Citac N s 74AC161)

>a to nie je vsetko.
>prva diera je od 157MHz do 161MHz

Asi sa pozerame na iny datasheet, ja to tam najst nemozem. Mozes ma prosim nasmerovat?

Tiez pozeram, ze ten Si570 ide dole az na 10MHz, preco teda 74AC? Ak sme sa teda zjednotili v tom, ze tie delice staci kaskadovat (ripple), tak snad by mohli stacit bezne HC, ci som nieco prehliadol?

wek



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