/* * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Support functions for calculating clocks/divisors for the ICST * clock generators. See http://www.idt.com/ for more information * on these devices. */ #ifndef ICST_H #define ICST_H struct icst_params { unsigned long ref; unsigned long vco_max; /* inclusive */ unsigned long vco_min; /* exclusive */ unsigned short vd_min; /* inclusive */ unsigned short vd_max; /* inclusive */ unsigned char rd_min; /* inclusive */ unsigned char rd_max; /* inclusive */ const unsigned char *s2div; /* chip specific s2div array */ const unsigned char *idx2s; /* chip specific idx2s array */ }; struct icst_vco { unsigned short v; unsigned char r; unsigned char s; }; unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco); struct icst_vco icst_hz_to_vco(const struct icst_params *p, unsigned long freq); /* * ICST307 VCO frequency must be between 6MHz and 200MHz (3.3 or 5V). * This frequency is pre-output divider. */ #define ICST307_VCO_MIN 6000000 #define ICST307_VCO_MAX 200000000 extern const unsigned char icst307_s2div[]; extern const unsigned char icst307_idx2s[]; /* * ICST525 VCO frequency must be between 10MHz and 200MHz (3V) or 320MHz (5V). * This frequency is pre-output divider. */ #define ICST525_VCO_MIN 10000000 #define ICST525_VCO_MAX_3V 200000000 #define ICST525_VCO_MAX_5V 320000000 extern const unsigned char icst525_s2div[]; extern const unsigned char icst525_idx2s[]; #endif