Hi I'm Sean
I use custom board for ADSP21478 .
I try to control ADAU1328.
But the PLL lock indicator register respond to "0".
How can I double check program problem or Hardware problem?
The program is stop to the LockTest,becasue the PLL lock indicator register not respond to "1"
LockTest = Get1939Register(0x1, ad1939_cs);
while (!(LockTest & AD1938_PLL_LOCK))
{
LockTest = Get1939Register(CLKCTRL1, ad1939_cs);
LockCount++;
}
My custom Board codec use Quartz Crystal 12.288MHZ.
and the ADSP21478 use Quartz Crystal 25MHZ.
My CCLK is 200MHZ.
I use AD1939 Example code changes SPI CLK Frequency is 500kHZ.
My Program are as follows
/* Setup the SPI parameters here in a buffer first */
unsigned char ConfigParam1939 [] = {
(AD1939_ADDR), DACMUTE, 0x00,
(AD1939_ADDR), CLKCTRL0, DIS_ADC_DAC | INPUT256 | PLL_IN_MCLK | MCLK_OUT_OFF | PLL_PWR_DWN,
(AD1939_ADDR), CLKCTRL1, DAC_CLK_PLL | ADC_CLK_PLL | DIS_VREF,
(AD1939_ADDR), DACCTRL0, DAC_FMT_I2S | DAC_BCLK_DLY_1 | DAC_SR_96K,
(AD1939_ADDR), DACCTRL1, DAC_BCLK_SLAVE| DAC_LRCLK_SLAVE | DAC_CHANNELS_2 | DAC_LATCH_MID, //Ddebug
(AD1939_ADDR), DACCTRL1, DAC_BCLK_SLAVE| DAC_LRCLK_SLAVE | DAC_CHANNELS_2 | DAC_LATCH_MID, //Ddebug
(AD1939_ADDR), DACCTRL2, DAC_WIDTH_24,
(AD1939_ADDR), ADCCTRL0, ADC_SR_96K,
(AD1939_ADDR), ADCCTRL1, ADC_LATCH_MID | ADC_FMT_I2S | ADC_BCLK_DLY_1 | ADC_WIDTH_24,
(AD1939_ADDR), ADCCTRL2, ADC_BCLK_SRC_INTERNAL | ADC_BCLK_MASTER | ADC_CHANNELS_2 | ADC_LRCLK_MASTER | ADC_LRCLK_FMT_50_50|ADC_LRCLK_POL_NORM|ADC_BCLK_POL_NORM, // NDdebug
(AD1939_ADDR), ADCCTRL2, ADC_BCLK_SRC_INTERNAL | ADC_BCLK_MASTER | ADC_CHANNELS_2 | ADC_LRCLK_MASTER | ADC_LRCLK_FMT_50_50|ADC_LRCLK_POL_NORM|ADC_BCLK_POL_NORM, // NDdebug
(AD1939_ADDR), DACVOL_L1, DACVOL_MAX,
(AD1939_ADDR), DACVOL_R1, DACVOL_MAX,
(AD1939_ADDR), DACVOL_L2, DACVOL_MAX,
(AD1939_ADDR), DACVOL_R2, DACVOL_MAX,
(AD1939_ADDR), DACVOL_L3, DACVOL_MAX,
(AD1939_ADDR), DACVOL_R3, DACVOL_MAX,
(AD1939_ADDR), DACVOL_L4, DACVOL_MAX,
(AD1939_ADDR), DACVOL_R4, DACVOL_MAX,
(AD1939_ADDR), CLKCTRL0, DIS_ADC_DAC | PLL_IN_MCLK | MCLK_OUT_OFF | INPUT256 | PLL_PWR_UP,
(AD1939_ADDR), CLKCTRL0, ENA_ADC_DAC | PLL_IN_MCLK | MCLK_OUT_OFF | INPUT256 | PLL_PWR_UP,
(AD1939_ADDR), DACMUTE, 0x00,
} ;
unsigned char AD1938_Regs_Read[sizeof(ConfigParam1939) / 3];
unsigned char B_Test[sizeof(ConfigParam1939) / 3];
volatile int spiFlag ;
///////////////////////////////////////////////////////////////////////////////
// Set up the SPI port to access the AD1939
// Call with SPI flag to use
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
void SetupSPI1939(unsigned int SPI_Flag)
{
// Configure the SPI Control registers
// First clear a few registers
*pSPICTL = (TXFLSH | RXFLSH) ;
*pSPIFLG = 0;
// Setup the baud rate to 500kHz
//*pSPIBAUD = 100;
*pSPIBAUD = 100;
// Setup the SPI Flag register using the Flag specified in the call
*pSPIFLG = (0xF00|SPI_Flag);
// Now setup the SPI Control register
*pSPICTL = (SPIEN | SPIMS | WL8 | MSBF | TIMOD1 | CLKPL | CPHASE |SMLS|GM);//
}
///////////////////////////////////////////////////////////////////////////////
// Disable the SPI Port
///////////////////////////////////////////////////////////////////////////////
void DisableSPI1939(void)
{
*pSPICTL = (TXFLSH | RXFLSH);
}
///////////////////////////////////////////////////////////////////////////////
// Send a word to the AD1939 via SPI
// Call with the AD1939 address, register address, register data,
// and SPI flag to use
///////////////////////////////////////////////////////////////////////////////
void Configure1939Register (unsigned char rwaddr,unsigned char regaddr,unsigned char regdata, unsigned int spiselect)
{
int i,j;
unsigned char val[3];
SELECT_SPI_SLAVE(spiselect);
val[0]=WR(rwaddr);
val[1]=regaddr;
val[2]=regdata;
for(i=0;i<3;i++)
{
j=0;
*pTXSPI = val[i] ;
//Delay(136);
//Wait for the SPI to indicate that it has finished.
while ((*pSPISTAT & TXS))
{j++;}
}
j=0;
//Wait for the SPI to indicate that it has finished.
while (!(*pSPISTAT & SPIFE))
{j++;}
Delay(13);
DESELECT_SPI_SLAVE(spiselect);
}
///////////////////////////////////////////////////////////////////////////////
// Receive a register setting from the AD1939
// Call with the register address, and SPI flag to use; returns register data
///////////////////////////////////////////////////////////////////////////////
unsigned char Get1939Register (unsigned char regaddr, unsigned int spiselect)
{
int i,j;
unsigned char val[3];
unsigned int tmp;
SELECT_SPI_SLAVE(spiselect);
val[0]=RD(AD1939_ADDR);
val[1]=regaddr;
val[2]=0;
for(i=0;i<3;i++)
{
j=0;
*pTXSPI = val[i] ;
//Wait for the SPI to indicate that it has finished.
while ((*pSPISTAT & TXS))
{j++;}
}
j=0;
//Wait for the SPI to indicate that it has finished.
while (!(*pSPISTAT & SPIF))
{j++;}
while (!(*pSPISTAT & SPIFE))
{j++;}
Delay(13);
tmp = *pRXSPI;
DESELECT_SPI_SLAVE(spiselect);
return tmp;
}
///////////////////////////////////////////////////////////////////////////////
// Set up all AD1939 registers via SPI
///////////////////////////////////////////////////////////////////////////////
int LockCount = 0;
unsigned int LockTest;
void Init1939viaSPI(int codec)
{
int configSize = sizeof(ConfigParam1939);
int j=0 ;
unsigned char tmpA[sizeof(ConfigParam1939) / 3];
unsigned int ad1939_cs;
int i=0;
ad1939_cs = DS0EN;
//Set up AD1939
SetupSPI1939(ad1939_cs);
//Write register settings
for(i = 0; i < configSize-6; i+=3)
{
Configure1939Register(ConfigParam1939[i], ConfigParam1939[i+1], ConfigParam1939[i+2], ad1939_cs);
Delay(272);
//Read back register settings for debugging
AD1938_Regs_Read[j++] = Get1939Register(ConfigParam1939[i+1], ad1939_cs);
Delay(272);
}
LockTest = Get1939Register(0x1, ad1939_cs);
while (!(LockTest & AD1938_PLL_LOCK))
{
LockTest = Get1939Register(CLKCTRL1, ad1939_cs);
LockCount++;
}
for(i = configSize-6; i < configSize; i+=3)
{
Configure1939Register(ConfigParam1939[i], ConfigParam1939[i+1], ConfigParam1939[i+2], ad1939_cs);
Delay(272);
//Read back register settings for debugging
AD1938_Regs_Read[j++] = Get1939Register(ConfigParam1939[i+1], ad1939_cs);
Delay(272);
}
DisableSPI1939();
}
//Delay loop
void Delay(int i)
{
for(i ; i > 0; --i)
asm("nop;");
}
My SPI protocol are as follows
SPI CLK is 500KHZ
Period is 2us
+Width is 998.ns
-Width is 1us
TCLH is 160ns
TLCS is 2.42us
TCCP is 1.82us
