g711lib_si3000.h

Audio compression on embedded board

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/******************************************************************************
**
**  Filename:    G711Lib_Si3000.h 
**
**  System:      RISC
**
**  Platform:    dsPIC33F
**
**  Description: This header file contains structures for initializing SI 3000
**               codec.It also has #define's for initializing these structures.
**               The user can make his settings for SI 3000 codec by making
**               changes to the #define's for the structure.The structure
**               contained in this file is spxSi3000.
**
******************************************************************************/

#ifndef _G711LIB_SI3000_H
#define _G711LIB_SI3000_H
#include "G711Lib_common.h"

//-----------------------------------------------------------------------------
//PREPROCESSOR CONSTANTS/MACROS
//-----------------------------------------------------------------------------
#define DCIMODE 1                    //1 = DCIMASTER,  0 = DCISLAVE

#if  DCIMODE

#define CONTROL1 0x0010              //Set Speaker Drive Power Down to Normal
                                     //operation and Line Drive Power Down to
                                     //Power down line driver.
#define CONTROL2 0x0000              //High Pass Filter enabled and Digital
                                     //Loopback to Normal operation.
#define PLL1DIVIDEN1 0x0000          //No division done.

#define PLL1MULTIPLYM1 0x0000        //No multiplication done.

#define RXGAINCONTROL 0x00EA         //Line in Gain= 20db,Line in Muted,
                                     //MIC Input Gain= 10db and Handset Input
                                     //Muted.
#define ADCVOLUMECONTROL 0x005C      //Set RX PGA Gain Control = 0db,Line out
                                     //Mute ,Handset out Mute.
#define DACVOLUMECONTROL 0x005F      //Set TX PGA Gain Control =0db,SPKR_L Mute
                                     //to Active,SPKR_R Mute to Active.
#define STATUSREPORT 0x0000          //Set SPK_L Short Circuit,SPK_R Short
                                     //Circuit and Line Out Short Circuit
                                     //in Normal mode.
#define ANALOGATTENUATION 0x0000     //Set Line Out Attenuation = 0db and
                                     //Speaker Out Attenuation = 0db.

#else

#define CONTROL1 0x0010              //Set Speaker Drive Power Down to Normal
                                     //operation and Line Drive Power Down to
                                     //Power down line driver. 
#define CONTROL2 0x0000              //High Pass Filter enabled and Digital
                                     //Loopback to Normal operation.
#define PLL1DIVIDEN1 0x0002          //Divided by 0x2h.

#define PLL1MULTIPLYM1 0x0013        //Multiplied by 0x13h.

#define RXGAINCONTROL 0x00EA         //Line in Gain= 20db,Line in Muted,
                                     //MIC Input Gain= 10db and Handset Input
                                     //Muted.
#define ADCVOLUMECONTROL 0x005C      //Set RX PGA Gain Control = 0db,Line out
                                     //Mute ,Handset out Mute.
#define DACVOLUMECONTROL 0x005F      //Set TX PGA Gain Control =0db,SPKR_L Mute
                                     //to Active,SPKR_R Mute to Active.
#define STATUSREPORT 0x0000          //Set SPK_L Short Circuit,SPK_R Short
                                     //Circuit and Line Out Short Circuit
                                     //in Normal mode.
#define ANALOGATTENUATION 0x0000     //Set Line Out Attenuation = 0db and
                                     //Speaker Out Attenuation = 0db.

#endif

#define DCIINTPRIORITY  0x04         //Priority for DCI interrupt.

#define G711 { CONTROL1,CONTROL2, PLL1DIVIDEN1, PLL1MULTIPLYM1,RXGAINCONTROL,\
                ADCVOLUMECONTROL,  DACVOLUMECONTROL, STATUSREPORT,\
                ANALOGATTENUATION,DCIMODE, DCIINTPRIORITY, BCG1 }
                
#define G711SI3000INIT const g711Si3000 g711 = G711;                

/*-----------------------------------------------------------------------------
This structure is used to configure the  SI 3000 registers.The user can make
his settings for the corresponding registers in by SI 3000 putting the required
values in the #define G711.
-----------------------------------------------------------------------------*/
struct _g711Si3000
{
       // Si3000 registers
  int control1;			//Si3000 Register1
						// 	SR RES RES SPD LPD HPD MPD CPD
						// 7 SR (Software Reset)1=Sets all registers to their reset value,
                        //   0=Enables chip for normal operation
						// 6:5 RES (Reserved)Read returns zero
						// 4 SPD (Speaker Drive Power Down)1=Normal operation,0=Power down
                        //   left and right speaker drive
						// 3 LPD (Line Drive Power Down)1=Normal operation,0=Power down
                        //   line driver.
						// 2 HPD (Handset Drive Power Down)1=Normal operation,0=Power down
                        //   handset driver.
						// 1 MPD (MIC Bias Power Down)1=Power down MIC bias buffer,0=Normal
                        //   operation
						// 0 CPD (Chip Power Down)1=Puts Si3000 into power down mode,
                        //   0=Normal o peration

  int control2;         // Si3000 Regiter2
						// RES RES RES HPFD PLL DL1 DL2 RES
						// 7:5 RES (Reserved) Read returns zero
						// 4 HPFD (High Pass Filter Disable)1=HPF disabled,0=HPF enabled
						// 3 PLL (PLL Divide by 10)1=Sets final stage of PLL to divide by
                        //   10,0=Sets final stage of PLL to divide by5
						// 2 DL1 (Digital Loopback)1=Enables digital loopback (DAC analog
                        //   out? ADC analog in),0=Normal operation
						// 1 DL2 (Digital Loopback)1=Enables digital loopback (DAC one
                        //   bit ? ADC one bit),0=Normal operation
						// 0 RES (Reserved) Read returns zero

  int pLL1divideN1;     // Si3000 Register 3
						// N1 N1 N1 N1 N1 N1 N1 N1
						// 7:0 N1 Contains the (value  1) for determining the output
                        //   frequency on PLL

  int pLL1multiplyM1;   // Si3000 Register 4
						// M1 M1 M1 M1 M1 M1 M1 M1
						// 7:0 M1 Contains the (value  1) for determining the output
                        //   frequency on PLL

  int rxgaincontroL1;   // Si3000 Register 5
						// LIG LIG LIM MCG MCM HIM IIR
						// 7:6 LIG (Line in Gain)11=20dB gain,10=10dB gain,01=0dB gain,
                        //   00=Reserved
						// 5 LIM(Line in Mute)1=Line input muted,0=Line input goes to mixer
						// 4:3 MCG (MIC Input Gain)11=30dB gain,10=20dB gain,01=10dB gain,
                        //   00=0 dB gain
						// 2 MCM(MIC Input Mute)1=Mute MIC input,0=MICinput goes into mixer
						// 1 HIM (Handset Input Mute)1=Mute handset input,0=Handset input
                        //   goes into mixer
						// 0 IIR (IIR Enable)1=Enables IIR filter,0=Enables FIR filter
  int adcvolumecontrol; // Si3000 Register 6
						// RXG RXG RXG RXG RXG RXG LOM HOM
						// 6:2 RXG (RX PGA Gain Control)11111=12dB,10111=0dB,00000=34.5dB,
                        //   LSB=1.5dB
						// 1 LOM (Line Out Mute)0=Mute,1=Active
						// 0 HOM (Handset Out Mute)0=Mute,1=Active
  int dacvolumecontrol; // Si3000 Register 7
						// TXG TXG TXG TXG TXG TXG SLM SRM
						// 6:2 TXG (TX PGA Gain Control)11111=12dB,10111=0dB00000=34.5dB,
                        //   LSB=1.5dB
						// 1 SLM (SPKR_L Mute)0=Mute,1=Active
						// 0 SRM (SPKR_R Mute)0=Mute,1=Active
  int statusreport;     // Si3000 Register 8
						// SLSC SRSC LOSC RES RES RES RES RES
						// 7 SLSC (SPK_L Short Circuit)1=Indicate short circuit status is
                        //   detected at left speaker,0=Normal mode
						// 6 SRSC (SPK_R Short Circuit)1=Indicate short circuit status is
                        //   detected at right speaker,0=Normal mode
						// 5 LOSC (Line Out Short Circuit)1=Indicate short circuit status
                        //   is detected at line out,0=Normal mode
  int analogattenuation;// Si3000 Register9
						// RES RES RES RES LOT LOT SOT SOT
						// 7:4 RES (Reserved) Read returns zero
						// 3:2 LOT (Line Out Attenuation)11=18dB analog attenuation on Line
                        //   Output,10=12dB analog attenuation on Line Output,01=6dB analog
                        //   attenuation on Line Output,00=0dB analog attenuation on Line
                        //   Output
         		        // 2:0 SOT (Speaker Out Attenuation)11=18dB analog attenuation on
                        //   Speaker Output,10=12dB analog attenuation on Speaker Output,
                        //   01=6dB analog attenuation on Speaker Output,00=0dB analog
                        //   attenuation on Speaker Output
  
  char dcimode;         //1 = master  , 0 = slave 
  char dciintpri;       //Priority for DCI interrupt.  
  int bcg1;             //DCI bit clock generator control bits.                                 

};

//-----------------------------------------------------------------------------
//TYPEDEFS/EXTERN
//-----------------------------------------------------------------------------
typedef struct _g711Si3000 g711Si3000;
extern const   g711Si3000 g711;

#endif  /* _G711LIB_SI3000_H */

/*-----------------------------------------------------------------------------
                                      END OF FILE:  G711Lib_Si3000.h 
-----------------------------------------------------------------------------*/