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[参考译文] TLV320ADC3001:低通滤波器宽带和窄带切换方法

Guru**** 2378650 points
Other Parts Discussed in Thread: TLV320ADC3101
请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/646066/tlv320adc3001-low-pass-filter-wide-band-and-narrow-band-switching-method

部件号:TLV320ADC3001
主题中讨论的其他部件:TLV320ADC3101

您好,

客户在BT呼叫应用中使用TLV320ADC3101,他们希望将低通滤波器设置从4kHz切换至8kHz。

但是,它们未能将低通滤波器从4kHz切换至8kHz,系统在4kHz模式下工作,甚至使用8kHz设置。 使用第4页寄存器73&75,遵循禁用ADC--写入寄存器--读取寄存器过程。

您能否告诉我们正确的流程? 谢谢。

东宝

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好,Dongbao,

    您能否分享准确的寄存器写入操作来完成此更改?  设置寄存器将帮助我们尝试确定此行为的根本原因。

    此致,

     -Diego Mel é ndez López ñ a
      音频应用工程师

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。
    您好,Diego, 
    感谢您的回复。 请参阅以下客户切换低通滤波器流程:
    ---------------------------------------------------------------------------------------------------------------------------------------------------- 
    REG_VALUE Mix_SWITCH[]=
    {
    {0,0x0},//更改为第0页
    {81,0x2},//关闭ADC电源
    {254,0x5},//延迟5毫秒
    {0,0x4},//更改为第4页
    {73,0x2}, //@8k,设置reg 73: 0x02;@16k,设置reg :0x01
    {75,0x2}, //@8k或@16k:SET REG 75: 0x02;
    {0,0x0},//更改为第0页
    {81, 0xC2},//启动ADC
    }; 
    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 
    ADC3101头文件如下,所有寄存器设置。
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    //控件位置 typedef结构{ u8 control_page; //系数页面位置 u8 control_base; //系数基本地址在页面内 u8 control_mute_flag; //非零表示需要静音 u8 control_string_index;//字符串表索引 }控件; 静态控制MUX_control[]={ {4,74,1,0}, {4,72,1} }; #if 0 静态字符串MUX_control_names[]={ Steree_Mux_1", "Steree_MUX_2" }; #endif 0静态 控制 <_strategyf><_status><_strut> U8 REG_OFF; u8 reg_val; } reg_value; #if 0 静态字符串REG_Section_Names_[]={ "miniDSP_A_REG_VALUES", "miniDSP_D_REG_VALUES", }; #endif REG_VALUE REG_Section_program[]={ {0,0x00}, {0,0x2F}, // # reg[47][95]=0x00 {95,0x00}, // # reg[47][96]=0x00 {96,0x00}, // # reg[47][97]=0x00 {97,0x00}, {0,0x00}, // # reg[0][1]=0x01 { 1,0x01}, // # reg[0][254]=0x10 {254,0x10}, // # reg[0][61]= 0x00 ; REG(0)(0x3D => 61) ADC ADC程序模式 {61,0x00}, // # reg[0][4]= 0x07 ; PLL_CLKIN = MCLK,CODE_CLKIN=PLL_CLK {4,0x07}, // # reg[0][5]= 0x91 ; P=1,R=1 { 5,0x91}, // # reg[0][6]= 0x20 ;J=8,设置为FS =44.1kHz { 6,0x20}, // # reg[0][18]= 0x84 ; reg(0)(0x12 => 18) ADC Powerup NADC =4,mkmkmkmk将额外除以2,而不是3254,因为只有512个指令可用 {18,0x84}, // # reg[0][19]= 0x84 ; ADC加电mAdc =4 {19,0x84}, // # reg[0][27]= 0x00 ; reg(0)(0x1b => 27) 模式= I2S,文字长度= 16 {27,0x00}, // # reg[0][20]=128 ; REG(0)(0x14=>20) ADC AOSR = 128 { 20,0x80}, // # reg[0][83]= 0x0 ; ADC vol控制= 0dB {83,0x00}, // # reg[0][84]= 0x0 ; ADC vol控制= 0dB {84,0x00}, // # reg[0][22]= 4 ;小数比=4 { 22,0x04}, // # reg[0][21]=226;I空间 碎片协委会 { 21,0xE2}, {255,0x00}, {0,0x01}, // # reg[1][52]= 0xFC ; REG(1)(0x34=>52) 为左P选择ADC IN1_L {52,0xFC}, // # reg[1][55]= 0xFC ; REG(1)(0x37=>55) 为右侧P选择ADC IN1_R {55,0xFC}, // # reg[1][59]= 0x00 ; reg(1)(0x3b =>59) 取消ADC左麦克风PGA的静音 {570x3C}, //为右侧ADC选择IN1_L {59,0x00}, // # reg[1][60]= 0x00 ; reg(1)(0x3c =>60) 取消ADC右麦克风PGA的静音 {60,0x00}, {0,0x00}, // # reg[0][81]= 0xC2 ; REG(0)(0x51 => 81) ADC加电ADC左右通道(软步进禁用) {81,0xC2}, // # reg[0][82]= 0x00 ; REG(0)(0x52 => 82) ADC将ADC左右信道取消静音 {82,0x00}, // # reg[0][82]= 0 {82,0x00}, // # reg[0][83]= 0 {83,0x00}, // # reg[0][86]= 32 {86,0x20}, // # reg[0][87]= 254 {87,0xFE}, // # reg[0][88]= 0 {88,0x00}, // # reg[0][89]= 104 {89,0x68}, // # reg[0][90]= 168 {90,0xA8}, // # reg[0][91]= 6 {91,0x06}, // # reg[0][92]= 0 {92,0x00}, // # reg[0][84]= 0 {84,0x00}, // # reg[0][94]= 32 {94,0x20}, // # reg[0][95]= 254 {95,0xFE}, // # reg[0][96]= 0 {96,0x00}, // # reg[0][97]= 104 {97,0x68}, // # reg[0][98]=168 {98,0xA8}, // # reg[0][99]= 6 {99,0x06}, // # reg[0][100]= 0 {100,0x00}, }; REG_VALUE miniDSP_A_REG_VALUES[]={ {0,0x04}, {2,0x00}, { 3,0xB8}, { 4,0x7E}, { 5,0x91}, {6,0x7F}, { 7,0xFF}, {8,0x00}, {9,0x00}, {10,0x00}, {11,0x00}, { 12,0x7F}, { 13,0x94}, {14,0xC0}, {15,0x36}, {16,0x00}, {17,0x00}, {18,0x3F}, {19,0x94}, {20,0x00}, {21,0x00}, { 22,0x7F}, { 230xFF}, {24,0x00}, {25,0x00}, {26,0x00}, {27,0x00}, {28,0x00}, {29,0x00}, { 30,0x00}, {31,0x00}, {32,0x7F}, {33,0x94}, {34,0xC0}, {35,0x36}, {36,0x00}, {37,0x00}, { 380x3F}, {39,0x94}, {40,0x00}, {41,0x00}, { 42,0x7F}, { 43,0xFF}, {44,0x00}, {45,0x00}, {46,0x00}, {47,0x00}, {48,0x00}, {49,0x00}, {50,0x00}, {51,0x00}, { 52,0x7F}, {53,0xFF}, { 54,0x00}, {55,0x00}, {56,0x00}, {57,0x00}, {58,0x00}, {59,0x00}, {60,0x00}, {61,0x00}, { 62,0x13}, {63,0xD8}, {64,0x13}, { 65,0xD8 }, { 66,0x13}, { 67,0xD8 }, {68,0x27}, { 69,0xB0}, { 70,0xE1}, {71,0x3D}, {72,0x00}, { 73,0x01}, {74,0x00}, {75,0x02}, {76,0xFF}, { 77,0x9E}, {78,0xF7}, {79,0x10}, { 80,0x26}, { 81,0xF0}, {82,0x02}, { 83,0x61}, {84,0x40}, {85,0x02}, {86,0xFF}, { 87,0xFC}, {88,0xFF}, { 89,0xFD}, {90,0xFF}, {91,0xE5}, {92,0xFF}, {93,0xA7}, {94,0xFF}, {95,0xC7}, {96,0xFF}, {97,0xCE}, {98,0xFF}, {99,0xFE}, {100,0xFE}, {101,0xF7}, {102,0xFF}, {103,0x46}, {104,0xFF}, {105,0x22}, {106,0xFF}, {107,0x0F}, {108,0xFA}, {109,0x8C}, {110,0xF5}, {111,0x08}, {112,0xFD}, {113,0x92}, {114,0xF3}, {115,0xA3}, {116,0x03}, {117,0xB3}, {118,0x00}, {119,0x33}, {120,0x00}, {121,0x71}, {122,0x40}, {123,0x60}, {124,0x00}, {125,0xE2}, {126,0x00}, {127,0xC6}, {0,0x05}, { 2,0x0C}, { 3,0x7E}, { 4,0x0C}, {5,0x7E}, {6,0x0C}, { 7,0x7E}, { 8,0x3c}, {9,0x55}, { 10,0xD5}, {11,0x58}, { 12,0x0C}, {13,0x7E}, {14,0x0C}, {15,0x7E}, {16,0x0C}, {17,0x7E}, { 18,0x3c}, {19,0x55}, { 20,0xD5}, {21,0x58}, { 22,0x0C}, { 230x7E}, {24,0x0C}, { 25,0x7E}, { 26,0x0C}, {27,0x7E}, {28,0x3C}, { 29,0x55 }, { 30,0xD5}, { 31,0x58}, { 320x06}, {33,0x55}, {34,0x06}, {35,0x55}, { 36,0x06}, {37,0x55}, { 380x51}, {39,0xE4}, {40,0xC2}, {41,0xE1}, { 42,0x00}, { 43,0x87}, {44,0x00}, { 45,0x0F}, {46,0x00}, {47,0X0A}, {48,0x00}, {49,0x02}, {50,0x01}, {51,0x81}, { 52,0x18}, { 53,0x89}, { 54,0x07}, {55,0xFB}, { 56,0x03}, {57,0xBE}, {58,0x00}, {59,0x49}, {60,0xFF}, { 61,0xF2 }, { 62,0xF9}, { 63,0xBA}, { 64,0xF9}, {65,0x00}, { 66,0xFF}, {67,0x68}, { 68,0xFE }, {69,0x2C}, { 70,0xEB}, { 71,0x8D}, {72,0x03}, { 73,0x83}, {74,0x01}, {75,0xC3}, {76,0x00}, { 77,0xD3}, {78,0x00}, {79,0x33}, { 800x00}, {81,0x02}, {82,0x32}, {83,0x08}, {84,0x0A}, {85,0xFA}, {86,0x54}, { 87,0x7B}, {88,0xFF}, {89,0x6B}, {90,0xFF}, {91,0x03}, {92,0xFC}, {93,0xC6}, {94,0xF5}, {95,0x54}, { 96,0xF9}, {97,0x64}, {98,0x39}, {99,0x80}, {100,0x03}, {101,0x1C}, {102,0x03}, {103,0x2F}, {104,0x00}, {105,0x67}, {106,0x0F}, {107,0x73}, {108,0x2C}, {109,0x2B}, {110,0x40}, {111,0x00}, {112,0xFF}, {113,0xFF}, {114,0x00}, {115,0x00}, {116,0x80}, {117,0x00}, {118,0x7F}, {119,0xFF}, {120,0x00}, {121,0x07}, {122,0x00}, {123,0x02}, {124,0x00}, {125,0x23}, {0,0x20}, { 2,0x03}, {3,0x77}, { 4,0xFF}, {5,0x00}, {6,0x00}, { 7,0x00}, {8,0x00}, {9,0x00}, {10,0x00}, {11,0x02}, {12,0x00}, {13,0xEA}, {14,0x03}, {15,0x77}, { 16,0x4E}, {17,0x03}, {18,0x08}, { 19,0xA0}, {20,0x0D}, {21,0x87}, { 22,0x9F}, {23,0x02}, {24,0x01}, {25,0x9E}, {26,0x03}, {27,0x86}, {28,0x9E}, { 29,0x0D}, { 30,0x89}, {31,0xA2}, { 320x03}, {33,0x8A}, {34,0xA3}, {35,0x03}, {36,0x0D}, {37,0xA3}, {38,0XD}, {39,0x8C}, {40,0xA2}, {41,0x09}, { 42,0x8B}, { 43,0xA1}, {44,0x0D}, {45,0x8E}, {46,0xA5}, {47,0x03}, {48,0x8F}, { 49,0xA6}, {50,0x03}, {51,0x17}, { 52,0xA6}, {53,0x0D}, { 54,0x96}, {55,0xA5}, {56,0x09}, {57,0x95}, {58,0xA4}, {59,0x0D}, { 60,0x98}, {61,0xA8}, {62,0x03}, {63,0x99}, { 64,0xA9}, {65,0x03}, { 66,0x1C}, { 67,0xA9}, { 68,0x0D}, { 69,0x9B}, { 70,0xA8}, {71,0x09}, { 72,0x9A}, {73,0xA7}, {74,0x0D}, {75,0x9D}, {76,0xAB}, { 77,0x03}, {78,0x9E}, {79,0xAC}, { 800x03}, {81,0x21}, {82,0xAC}, {83,0x0D}, {84,0xA0}, {85,0xAB}, {86,0x09}, {87,0x9F}, {88,0xAA}, {89,0x0D}, {90,0xA2}, {91,0xAE}, {92,0x03}, {93,0xA3}, {94,0xAF}, {95,0x00}, {96,0x00}, {97,0x00}, {0,0x21}, {2,0x00}, {3,0x00}, {4,0x00}, {5,0x02}, {6,0x00}, { 7,0xAD}, { 8,0x03}, { 9,0x7C}, { 10,0xEA}, {11,0x00}, {12,0x00}, {13,0x00}, {14,0x03}, {15,0xF8}, {16,0xEA}, {17,0x08}, {18,0x8B}, { 19,0xFE }, {20,0x00}, {21,0x00}, {22,0x00}, { 230x03}, { 24,0x2A}, {25,0x0C}, {26,0x03}, {27,0xA9}, {28,0x07}, { 290x03}, { 30,0xA9}, { 31,0x03}, { 320x03}, {33,0xA8}, {34,0x08}, {35,0x03}, { 36,0xA8}, {37,0x02}, {380x03}, {39,0xA7}, {40,0x01}, {41,0x03}, { 42,0xA7}, {43,0x09}, { 44,0x03}, { 45,0xA6 }, {46,0x0A}, {47,0F}, {48,0x26}, {49,0x00}, {50,0x03}, {51,0x26}, { 52,0x59}, {53,0x0F}, { 54,0xA6}, {55,0x4F}, { 56,0x02}, {57,0x00}, { 58,0x2A}, {59,0x03}, { 60,0xA7}, { 61,0x50}, {62,0x03}, {63,0xA7}, {64,0x58}, {65,0x03}, { 66,0xA8}, {67,0x57}, {680x03}, { 69,0xA8}, { 70,0x51}, {71,0x03}, { 72,0xA9}, { 73,0x56}, {74,0x03}, {75,0xA9}, { 76,0x52 }, { 77,0x03}, {780xAA}, { 79,0x5B}, { 800x03}, {81,0x2B}, {82,0x29}, {83,0x03}, {84,0xAB}, {85,0x2A}, {86,0x02}, {87,0x00}, { 88,0x79}, {89,0x03}, {90,0xAC}, {91,0x0E}, {92,0x03}, {93,0xAC}, {94,0x45}, {95,0x03}, {96,0xAD}, {97,0x2C}, {0,0x22}, { 2,0x03}, {3,0xAD}, { 4,0x27}, {5,0x03}, {6,0xAE}, { 7,0x2E}, { 8,0x03}, {9,0xAE}, { 10,0x25}, {11,0x03}, { 12,0xAF}, { 130x34}, {14,0x03}, {15,0xAF}, { 16,0x1F}, {17,0x03}, { 18,0xB0}, {19,0x11}, {20,0x03}, {21,0xB0}, { 22,0x42}, { 230x03}, { 24,0xB1}, {25,0x0F}, {26,0x03}, {27,0xB1}, {28,0x44}, { 290x03}, { 30,0xB2}, { 31,0x35 }, { 320x03}, {33,0xB2}, { 34,0x1E}, {35,0x03}, {36,0xB3}, {37,0x30}, {380x03}, {39,0xB3}, {40,0x23}, {41,0x03}, { 42,0xB4}, { 43,0x13}, { 44,0x03}, { 45,0xB4 }, {46,0x40}, {47,0x03}, { 48,0xB5}, {49,0x32}, {50,0x03}, {51,0xB5}, { 52,0x21}, {53,0x03}, { 54,0xB6}, {55,0x17}, { 56,0x03}, {57,0xB6}, {58,0x3c}, {59,0x03}, {60,0xB7}, { 61,0x37}, {62,0x03}, {63,0xB7}, { 64,0x1C}, {65,0x03}, { 66,0xB8}, {67,0x15}, {680x03}, { 69,0xB8}, { 70,0x3E}, {71,0x03}, { 72,0xB9}, { 73,0x19}, {74,0x03}, {75,0xB9}, { 76,0x3A }, { 77,0x03}, {78,0xBA}, {79,0x16}, { 800x03}, {81,0xBA}, {82,0x3D}, {83,0x03}, {84,0xBB}, {85,0x2D}, {86,0x03}, {87,0xBB}, { 88,0x26}, {89,0x03}, { 90,0xBC}, { 91,0x12}, {92,0x03}, {93,0xBC}, { 94,0x41 }, {95,0x03}, {96,0xBD}, { 97,0x38}, {0,0x23}, { 2,0x03}, { 3,0xBD}, { 4,0x1B}, {5,0x03}, {6,0xBE}, { 7,0x31}, { 8,0x03}, {9,0xBE}, { 10,0x22}, {11,0x03}, { 12,0xBF}, { 13,0x33}, {14,0x03}, {15,0xBF}, {16,0x20}, {17,0x03}, { 18,0xD5}, {19,0x2F}, {20,0x03}, {21,0xD5}, { 22,0x24}, { 230x03}, { 24,0xD6}, {25,0x10}, {26,0x03}, {27,0xD6}, {28,0x43}, { 290x03}, { 30,0xD7}, { 31,0x2B}, { 320x03}, {33,0xD7}, {34,0x28}, {35,0x03}, { 36,0xD8 }, {37,0x0D}, {380x03}, {39,0xD8}, {40,0x46}, {41,0x03}, { 42,0xD9 }, { 43,0x14}, { 44,0x03}, { 45,0xD9 }, {46,0x3F}, {47,0x03}, {48,0xDA}, {49,0x1A}, {50,0x03}, {51,0xDA}, { 52,0x39}, {53,0x03}, { 54,0xDB}, {55,0x18}, { 56,0x03}, {570xDB}, {58,0x3B}, {59,0x03}, {60,0xDC}, { 61,0x36}, {62,0x03}, {63,0xDC}, { 64,0x1D}, {65,0x00}, { 66,0x80}, {670x0A}, {68,0x05}, {69,0x01}, {70,0x00}, {71,0x00}, {72,0x81}, { 73,0x59}, {74,0x05}, {75,0x00}, {76,0x00}, { 77,0x03}, {78,0x04}, {79,0x47}, { 800x03}, {81,0x85}, {82,0x49}, {83,0x09}, {84,0x83}, {85,0x46}, {86,0x06}, {87,0x01}, { 88,0x49}, {89,0x03}, {90,0x82}, { 91,0x4B }, {92,0x02}, {93,0x80}, {94,0x48}, {95,0x06}, {96,0x81}, {97,0x48}, {0,0x24}, {2,0x00}, {3,0x00}, {4,0x00}, {5,0x01}, { 6,0x82}, { 7,0x00}, { 8,0x02}, {9,0x80}, { 10,0x4A}, {11,0x03}, { 12,0x77}, {13,0x9D}, {14,0x03}, {15,0x08}, {16,0xB2}, {17,0x0D}, {18,0x87}, {19,0xB1}, {20,0x02}, {21,0x01}, { 22,0xB0}, { 230x03}, { 24,0x86}, {25,0xB0}, {26,0x0D}, {27,0x89}, {28,0xB4}, { 290x03}, { 30,0x8A}, {31,0xB5}, { 320x03}, {33,0x0D}, {34,0xB5}, {35,0x0D}, { 36,0x8C}, {37,0xB4}, {380x09}, {39,0x8B}, {40,0xB3}, {41,0x0D}, { 42,0x8E}, { 43,0xB7}, { 44,0x03}, { 45,0x8F}, {46,0xB8}, {47,0x03}, {48,0x17}, { 49.0xB8}, {50,0x0D}, {51,0x96}, { 52,0xB7}, {53,0x09}, { 54,0x95}, { 55,0xB6}, {56,0x0D}, {570x98}, {58,0xBA}, {59,0x03}, { 60,0x99}, {61,0xBB}, {62,0x03}, {63,0x1C}, { 64,0xBB}, {65,0x0D}, {66,0x9B}, { 670xBA}, {68,0x09}, { 69,0x9A}, { 70,0xB9}, {71,0x0D}, { 72,0x9D}, {73,0xBD}, {74,0x03}, {75,0x9E}, {76,0xBE}, { 77,0x03}, {78,0x21}, {79,0xBE}, {80,0XD}, {81,0xA0}, {82,0xBD}, {83,0x09}, {84,0x9F}, {85,0xBC}, {86,0x0D}, {87,0xA2}, {88,0xC0}, {89,0x03}, {90,0xA3}, {91,0xC1}, {92,0x00}, {93,0x00}, {94,0x00}, {95,0x00}, {96,0x00}, {97,0x00}, {0,0x25}, { 2,0x02}, {3,0x00}, { 4,0xBF}, {5,0x03}, { 6,0x77}, { 7,0x4E}, { 8,0x03}, {9,0x12}, { 10,0xC4}, {11,0x0D}, { 12,0x91}, {13,0xC3}, {14,0x02}, {15,0x01}, {16,0xC2}, {17,0x03}, {18,0x90}, {19,0xC2}, {20,0x0D}, {21,0x93}, { 22,0xC6}, { 230x03}, {24,0x94}, { 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{43,0x00}, {44,0x00}, {45,0x00}, {46,0x00}, {47,0x00}, {48,0x00}, {49,0x00}, {50,0x00}, {51,0x00}, {52,0x00}, {53,0x00}, { 54,0x00}, {55,0x00}, {56,0x00}, {57,0x00}, {58,0x00}, {59,0x00}, {60,0x00}, {61,0x00}, {62,0x00}, {63,0x00}, {64,0x00}, {65,0x00}, {66,0x00}, {670x00}, {680x00}, {69,0x00}, {70,0x00}, {71,0x00}, {72,0x00}, { 73,0x00}, {74,0x00}, {75,0x00}, {76,0x00}, { 77,0x00}, {78,0x00}, {79,0x00}, { 800x00}, {81,0x00}, {82,0x00}, {83,0x00}, {84,0x00}, {85,0x00}, {86,0x00}, {87,0x00}, {88,0x00}, {89,0x00}, {90,0x00}, {91,0x00}, {92,0x00}, {93,0x00}, {94,0x00}, {95,0x00}, {96,0x00}, {97,0x00}, }; #define miniDSP_a_reg_values_Coeff_start 0#define miniDSP_a_reg_values_Coeff_size 252 #define miniDSP_a_reg_values_INST_start 252 #define miniDSP_a_reg_values_INST_size 1552 REG_VALUE miniDSP_D_REG_VALUES[]={ }; #define miniDSP_D_REG_VALUES_Coeff_START 0#define miniDSP_D_REG_VALUES_Coeff_Size 0 #define miniDSP_D_REG_VALUES_INST_START 0#define miniDSP_REG_VALUES_INST_SIZE 0

    谢谢。
    东宝
  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好,Dongbao,

    但是,由于代码的存在,要确定更改过滤器所遵循的过程非常复杂。 我假设您正在使用PurePath Studio来配置部件的miniDSP,对吗? 您能否描述更新筛选器的过程?实际上,您能否指定您尝试更新的筛选器是哪一个?  

    此致,

     -Diego Mel é ndez López ñ a
      音频应用工程师

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。
    您好,Diego,

    客户使用MCU来配置过滤器,而不是PPS。 正如我之前所说的,客户希望更改第4页reg73和reg74以过滤出更高频率的信号,使用第4页reg73&74是否正确?
    请查找以下流程以更新筛选条件:

    {0,0x0},//更改为第0页
    {81,0x2},//关闭ADC电源
    {254,0x5},//延迟5毫秒
    {0,0x4},//更改为第4页
    {73,0x2}, //@8k,设置reg 73: 0x02;@16k,设置reg :0x01
    {75,0x2}, //@8k或@16k:SET REG 75: 0x02;
    {0,0x0},//更改为第0页
    {81,0xC2},//启动ADC
    };
    谢谢
    东宝
  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好,Dongbao,  

    很抱歉,我现在注意到筛选器更新是第1次IIR。 一阶低通滤波器的所有系数都应更新,但似乎只有一对系数正在更新,特别是右侧通道的系数N0和N1的LSB。 这是客户的目标吗? 请您分享客户使用的公式,以得出仅更改上述寄存器的结论吗?   

    此致,

     -Diego Mel é ndez López ñ a
      音频应用工程师

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。
    您好,Diego,
    是的,客户只想更换一些低通滤清器。 我们通过保持时钟打开来解决问题,因为在时钟关闭后,不能更改低通滤波器。
    谢谢。
    东宝
  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好,Dongbao,

    感谢您的反馈。 作为参考,此器件的miniDSP要求运行系统时钟,以便对处理进行任何更改。 如果仍有问题,请告诉我。

    此致,

     -Diego Mel é ndez López ñ a
      音频应用工程师