// Page 0
Amp2555_i2cRegWrite(0x00, 0x00);
// Book 0
Amp2555_i2cRegWrite(0x7f, 0x00);
// Software reset
Amp2555_i2cRegWrite(0x01, 0x01);
// use delay >= 100us
BlockingDelayMs(0x01);
// Mute / Powerdown / Reset ends
// PLL begins
Amp2555_i2cRegWrite(0x00, 0x00);
Amp2555_i2cRegWrite(0x7f, 0x00);
Amp2555_i2cRegWrite(0x00, 0x01);
Amp2555_i2cRegWrite(0x73, 0x0f);
Amp2555_i2cRegWrite(0x74, 0x0d);
Amp2555_i2cRegWrite(0x00, 0x00);
Amp2555_i2cRegWrite(0x7f, 0x64);
Amp2555_i2cRegWrite(0x1b, 0x01);
Amp2555_i2cRegWrite(0x1c, 0x07);
Amp2555_i2cRegWrite(0x1d, 0x00);
Amp2555_i2cRegWrite(0x1e, 0x00);
Amp2555_i2cRegWrite(0x20, 0x07);
Amp2555_i2cRegWrite(0x22, 0x08);
Amp2555_i2cRegWrite(0x02, 0x10);
Amp2555_i2cRegWrite(0x21, 0x04);
Amp2555_i2cRegWrite(0x01, 0x08);
Amp2555_i2cRegWrite(0x2b, 0x00);
Amp2555_i2cRegWrite(0x2c, 0x20);
Amp2555_i2cRegWrite(0x1f, 0x20);
Amp2555_i2cRegWrite(0x2a, 0x40);
// PLL ends
Amp2555_i2cRegWrite(0x00, 0x00);
Amp2555_i2cRegWrite(0x7f, 0x00);
// DSP ROM Mode 1
Amp2555_i2cRegWrite(0x22, 0x01);
Amp2555_i2cRegWrite(0x00, 0x00);
Amp2555_i2cRegWrite(0x7f, 0x00);
Amp2555_i2cRegWrite(0x00, 0x01);
// GPIO3 = Input mode
Amp2555_i2cRegWrite(0x3f, 0x01);
// ASI1_DIN = GPIO3
Amp2555_i2cRegWrite(0x0c, 0x10);
// Power up 1
// Page 0
Amp2555_i2cRegWrite(0x00, 0x00);
// Book 0
Amp2555_i2cRegWrite(0x7f, 0x00);
// DSP,PLL, Ndiv , MDAC, MADC  power up
Amp2555_i2cRegWrite(0x04, 0xf8);
// Power up 3
// Page 0
Amp2555_i2cRegWrite(0x00, 0x00);
// Book 0
Amp2555_i2cRegWrite(0x7f, 0x00);
// LASSD ,Boost power up
Amp2555_i2cRegWrite(0x05, 0xa0);
// LASSD ,Boost Vsense and Isense power up
Amp2555_i2cRegWrite(0x05, 0xa3);
// Unmute Begins
// Delay
BlockingDelayMs(0x01);
// Page 0
Amp2555_i2cRegWrite(0x00, 0x00);
// Book 0
Amp2555_i2cRegWrite(0x7f, 0x00);
// CLASSD, Isense unmuted
Amp2555_i2cRegWrite(0x07, 0x00);
// Book 100
Amp2555_i2cRegWrite(0x7f, 0x64);
// classD soft unmute
Amp2555_i2cRegWrite(0x07, 0x00);
// Unmute Ends
Amp2555_i2cRegWrite(0x00, 0x00);
Amp2555_i2cRegWrite(0x7f, 0x00);