cdce913+iic,亲测可用，包含设定固定值和可自定义频率，固定值需用软件得到寄存器值.zip

#include "cdce913.h" #include "iic.h" #include <stdbool.h> #include "math.h" /************************************************ * File Name: @@@.c * Author:xykj * Date:2019.11.29 * function:cdce913 *************************************************/ void CDCE913_Init_invar(void) { cdce913_I2C_WriteByte(0x02, 0x34); // cdce913_I2C_WriteByte(0x03, 0x1A); //y1分频 cdce913_I2C_WriteByte(0x04, 0x02); //s0=0,s0=1均选通 cdce913_I2C_WriteByte(0x05, 0x50); //10PF 晶振电容 cdce913_I2C_WriteByte(0x06, 0x40); cdce913_I2C_WriteByte(0x12, 0X00); //SSC1_1[5:3] AND SSC1_0[2:0] XXX XXX cdce913_I2C_WriteByte(0x13, 0X00); //s0=0,选择fvco1 s0=1,选择FVCO_0 cdce913_I2C_WriteByte(0x14, 0x6D); //使用PLL1，Y2使用pdiv2，y3使用pdiv3 0110 1101 (6D) cdce913_I2C_WriteByte(0x15, 0X02); //S0=0,S0=1打开 cdce913_I2C_WriteByte(0x16, 0X7D); //y2分频 0为关 cdce913_I2C_WriteByte(0x17, 0X00); //y3分频 0为关 cdce913_I2C_WriteByte(0x18, 0X7C); //N cdce913_I2C_WriteByte(0x19, 0XE2); //N cdce913_I2C_WriteByte(0x1A, 0XC2); //R cdce913_I2C_WriteByte(0x1B, 0X68); //Q cdce913_I2C_WriteByte(0x1C, 0X7C); //N cdce913_I2C_WriteByte(0x1D, 0XE2); //N cdce913_I2C_WriteByte(0x1E, 0XC2); //R cdce913_I2C_WriteByte(0x1F, 0X68); //Q } //void CDCE913_Init_invar(void) //{ // cdce913_I2C_WriteByte(0x02, 0xB4); // // cdce913_I2C_WriteByte(0x03, 0x7E); //y1分频 // cdce913_I2C_WriteByte(0x04, 0x02); //s0=0,s0=1均选通 // cdce913_I2C_WriteByte(0x05, 0x50); //10PF 晶振电容 // cdce913_I2C_WriteByte(0x06, 0x40); // // cdce913_I2C_WriteByte(0x12, 0X00); //SSC1_1[5:3] AND SSC1_0[2:0] XXX XXX // cdce913_I2C_WriteByte(0x13, 0X00); //s0=0,选择fvco1 s0=1,选择FVCO_0 // cdce913_I2C_WriteByte(0x14, 0x2D); //使用PLL1，Y2使用pdiv2，y3使用pdiv3 0110 1101 (6D) // cdce913_I2C_WriteByte(0x15, 0X02); //S0=0,S0=1打开 // // cdce913_I2C_WriteByte(0x16, 0X00); //y2分频 0为关 // cdce913_I2C_WriteByte(0x17, 0X00); //y3分频 0为关 // cdce913_I2C_WriteByte(0x18, 0X6A); //N // cdce913_I2C_WriteByte(0x19, 0X59); //N // cdce913_I2C_WriteByte(0x1A, 0X82); //R // cdce913_I2C_WriteByte(0x1B, 0X89); //Q // cdce913_I2C_WriteByte(0x1C, 0X6A); //N // cdce913_I2C_WriteByte(0x1D, 0X59); //N // cdce913_I2C_WriteByte(0x1E, 0X82); //R // cdce913_I2C_WriteByte(0x1F, 0X88); //Q // // //} #define CLK_IN 26 void CDCE_Init_set(float f_out) { uint8_t read_back; uint8_t i = 0; uint32_t M, N, Q, R; float Pdiv; uint8_t reg18, reg19, reg1A, reg1B; int32_t P; float f_vco = f_out; bool result = false; uint8_t f_range; while (f_vco < 80) { i++; f_vco = f_out * i; } while (f_vco < 231) { for (N = 4095; N > 0; N--) { for (M = 511; M > 0; M--) { if ((N * CLK_IN / M) == f_vco) { { result = true; break; } } } if (result) { break; } } if (result) { break; } else { i++; f_vco = f_out * i; } } P = 4 - (int)((log((double)N / (double)M))/log(2)); if (P < 0) { P = 0; } Q = (int)((double)N * pow(2, (double)P) / (double)M); R = (double)N * pow(2, (double)P) - M * Q; if (f_vco < 125) { f_range = 0; } else if ((f_vco >= 125) && (f_vco < 150)) { f_range = 1; } else if ((f_vco >= 150) && (f_vco < 175)) { f_range = 2; } else { f_range = 3; } Pdiv = f_vco/ f_out; cdce913_I2C_WriteByte(0x02, 0xB4); cdce913_I2C_WriteByte(0x03, (uint8_t)Pdiv); cdce913_I2C_WriteByte(0x04, 0x02); cdce913_I2C_WriteByte(0x05, 0x50); cdce913_I2C_WriteByte(0x06, 0x40); cdce913_I2C_WriteByte(0x12, 0x00); cdce913_I2C_WriteByte(0x13, 0x00); cdce913_I2C_WriteByte(0x14, 0x6D); //Y2,Y3开关控制，y1不是该引脚控制，固定有Y1 cdce913_I2C_WriteByte(0x15, 0x02); cdce913_I2C_WriteByte(0x16, 0); cdce913_I2C_WriteByte(0x17, 0); reg18 = (N >> 4) & 0xFFF; reg19 = (N & 0xf) << 4 | (R & 0xf0) >> 5; reg1A = (R & 0x1f) << 3 | ((Q >> 3) & 0x7); reg1B = (Q & 0x7) << 5 | (P & 0x07) << 2 | (f_range & 0x03); cdce913_I2C_WriteByte(0x18, reg18); cdce913_I2C_WriteByte(0x19, reg19); cdce913_I2C_WriteByte(0x1A, reg1A); cdce913_I2C_WriteByte(0x1B, reg1B); cdce913_I2C_WriteByte(0x1C, N); cdce913_I2C_WriteByte(0x1D, ((N & 0xf) << 4) | (R & 0xf0)); cdce913_I2C_WriteByte(0x1E, (R & 0x0f) | (Q & 0xf0)); cdce913_I2C_WriteByte(0x1F, ((Q & 0x07) << 5) | ((P & 0x07) << 2) | (f_range & 0x03)); } //void CDCE_Init_set(uint16_t f_out) //{ // uint8_t read_back; // uint8_t i = 0; // uint32_t M, N, Pdiv, Q, R; // uint8_t reg18, reg19, reg1A, reg1B; // int P; // uint16_t f_vco = f_out; // bool result = false; // uint8_t f_range; // while (f_vco < 80) // { // i++; // f_vco = f_out * i; // } // while (f_vco < 231) // { // for (N = 4095; N > 0; N--) // { // for (M = 511; M > 0; M--) // { // if ((N * CLK_IN / M) == f_vco) // { // { // result = true; // break; // } // } // } // if (result) // { // break; // } // } // if (result) // { // break; // } // else // { // i++; // f_vco = f_out * i; // } // } // P = 4 - (int)((log((double)N / (double)M))/log(2)); // if (P < 0) // { // P = 0; // } // Q = (int)((double)N * pow(2, (double)P) / (double)M); // R = (double)N * pow(2, (double)P) - M * Q; // if (f_vco < 125) // { // f_range = 0; // } // else if ((f_vco >= 125) && (f_vco < 150)) // { // f_range = 1; // } // else if ((f_vco >= 150) && (f_vco < 175)) // { // f_range = 2; // } // else // { // f_range = 3; // } // Pdiv = f_vco/ f_out; // cdce913_I2C_WriteByte(0x02, 0xB4); // cdce913_I2C_WriteByte(0x03, (uint8_t)Pdiv); // cdce913_I2C_WriteByte(0x04, 0x02); // cdce913_I2C_WriteByte(0x05, 0x50); // cdce913_I2C_WriteByte(0x06, 0x40); // // cdce913_I2C_WriteByte(0x12, 0x00); // cdce913_I2C_WriteByte(0x13, 0x00); // cdce913_I2C_WriteByte(0x14, 0x6D); //Y2,Y3选择 // cdce913_I2C_WriteByte(0x15, 0x02); // // cdce913_I2C_WriteByte(0x16, 0); // cdce913_I2C_WriteByte(0x17, 0); // reg18 = (N >> 4) & 0xFFF; // reg19 = (N & 0xf) << 4 | (R & 0xf0) >> 5; // reg1A = (R & 0x1f) << 3 | ((Q >> 3) & 0x7); // reg1B = (Q & 0x7) << 5 | (P & 0x07) << 2 | (f_range & 0x03); // cdce913_I2C_WriteByte(0x18, reg18); // cdce913_I2C_WriteByte(0x19, reg19); // cdce913_I2C_WriteByte(0x1A, reg1A); // cdce913_I2C_WriteByte(0x1B, reg1B); // cdce913_I2C_WriteByte(0x1C, N); // cdce913_I2C_WriteByte(0x1D, ((N & 0xf) << 4) | (R & 0xf0)); // cdce913_I2C_WriteByte(0x1E, (R & 0x0f) | (Q & 0xf0)); // cdce913_I2C_WriteByte(0x1F, ((Q & 0x07) << 5) | ((P & 0x07) << 2) | (f_range & 0x03)); //}