TLV320AIC3204 wake up time

Hi Michael,

Welcome to E2E and thank you for your interest in our products.

Could you provide your register configuration? It could be related with the registers too.

Thank you.

Best regards,
Luis Fernando Rodríguez S.

Hi Luis

First my supply configuration is the same like in slaa404c.pdf page 10 type A.

// initClkAndInterface
write reg 0x00 {0}   // page 0
write reg 0x04 {0, 0, 0, 0, 0}
write reg 0x05 {1, 1, 0}
write reg 0x0b {4, 1}
write reg 0x0c {3, 1}
write reg 0x0d {0, 0}
write reg 0x0e {128}
write reg 0x3c {4, 0}
write reg 0x12 {4, 1}
write reg 0x13 {3, 1}
write reg 0x14 {128}
write reg 0x3d {4, 0}
write reg 0x1b {0, 0, 1, 1, 0, 0}
write reg 0x1d {3, 0, 0, 0, 0, 0}
write reg 0x35 {0, 1, 1, 0}
write reg 0x1e {4, 1}

// initPower
write reg 0x00 {1}  // page 1
write reg 0x02 {0, 0, 0, 1, 0, 0}
write reg 0x01 {0, 0, 0}
write reg 0x02 {0, 0, 0, 1, 0, 0}
write reg 0x0a {1, 1, 0, 1, 0, 0}
write reg 0x3d {255}
write reg 0x03 {0, 0, 0, 0}
write reg 0x04 {0, 0, 0, 0}
write reg 0x47 {49, 0}
write reg 0x7b {7, 0}

// initAdc
write reg 0x00 {1}
write reg 0x34 {0, 0, 0, 0}
write reg 0x36 {0, 0, 0, 0}
write reg 0x37 {0, 0, 0, 1}
write reg 0x39 {0, 0, 0, 1}
write reg 0x3b {8, 0}
write reg 0x3c {8, 0}

// initDac
write reg 0x00 {1}
write reg 0x0e {0, 0, 0, 1, 0, 0}
write reg 0x0f {0, 0, 0, 1, 0}
write reg 0x09 {0, 0, 0, 1, 0, 0, 0}
write reg 0x12 {4, 0, 0}
write reg 0x13 {0, 1, 0}

write reg 0x00 {0}
write reg 0x41 {0}
write reg 0x42 {0}

// powerAdcUp
write reg 0x00 {0}
write reg 0x51 {0, 0, 0, 0, 1, 0}

// powerAdcDown
write reg 0x00 {0}
write reg 0x51 {0, 0, 0, 0, 0, 0}

// powerDacUp
write reg 0x00 {0}
write reg 0x3f {0, 0, 2, 0, 1}

// powerDacDown
write reg 0x00 {0}
write reg 0x3f {0, 0, 0, 0, 0}

// muteAdc
write reg 0x00 {0}
write reg 0x52 {0, 1, 0, 1}
write reg 0x53 {0, 0}
write reg 0x54 {0, 0}

// unmuteAdc
write reg 0x00 {0}
write reg 0x52 {0, 0, 0, 1}
write reg 0x53 {0, 0}
write reg 0x54 {0, 0}

// muteDac
write reg 0x00 {0}
write reg 0x40 {0, 1, 1, 0, 0}

// unmuteDac
write reg 0x00 {0}
write reg 0x40 {0, 1, 0, 0, 0}

// powerOn 
write reg 0x00 {1}  // page 1
write reg 0x02 {1, 0, 0, 1, 0, 0}
write reg 0x01 {0, 1, 0}
write reg 0x02 {1, 0, 0, 0, 0, 0}

// powerOff 
write reg 0x00 {1}  // page 1
write reg 0x02 {1, 0, 0, 1, 0, 0}
write reg 0x01 {0, 0, 0}
write reg 0x02 {0, 0, 0, 1, 0, 0}

// sequences
init(initClk,
     initPower,
     initAdc,
     initDac);

wakeUp(powerOn,
       powerAdcUp,
       unmuteAdc,
       powerDacUp,
       unmuteDac);

sleep(muteDac,
      powerDacDown,
      muteAdc,
      powerAdcDown);




Best Regards

Michael

Hi, Michael,

Excuse me, could you provide the write reg function syntax. How does this function write in the selected register?

Thank you.

Best regards,

Luis Fernando Rodríguez S.

Hi Luis

Every register is mapped in a struct. Exactly by means of the definition in slaa557.pdf

e.g. register 0x3b (page 1):
typedef struct
{
  u8       volume : 7;
  u8       enable : 1;
} micPgaLeftVolCtrl_t;

I initialize it with:
static const micPgaLeftVolCtrl_t leftVol = {8, 0}; // 4dB enabled

Then I send the leftVol or one of the other register values with a write command to the spi.



Best Regards

Michael

 

 

Hi, Michael,

I already made some tests with your register configuration. I changed the value of register 0x7b from 0x07 ({7, 0}) to 0x01 ({1,0}). Then, I applied the wake up sequence and it worked, the reference voltage reached its value immediately.

I hope this helps you. If you still have questions or comments, please let me know.

Best regards,
Luis Fernando Rodríguez S.

Hi, Michael,

Yes, you're right. When I added the powerOff sequence, the reference voltage changes slowly. In the EVM, it is used a 10uF and a 0.1uF capacitors (total: 10.1uF). The section 2.10 Reference Voltage of the TLV320AIC3204 Application Reference Guide explains that the time must be 1 second using a 1uF decoulpling capacitor. If it is required a faster power-up, the reference block can be kept powered up.

Please, check the Reference Voltage section and if you still have questions, please let me know.

Best regards,

Luis Fernando Rodríguez S.

Hi Luis

Thank you for the answer.

Also the capter 2.10 was very helpful.

But I have still the problem that I cannot keep the reference block powerd up with setting register 123.

Power on sequence:

write reg 0x01 {0, 1, 0}           // Weak connection disabled
write reg 0x02 {1, 0, 0, 0, 0, 0}  // AVDD power up, analog block enable
write reg 0x7b {5, 0}              // power up 40ms forced

Power off sequence:

write reg 0x01 {0, 0, 0}           // Weak connection enable
write reg 0x02 {0, 0, 0, 1, 0, 0}  // AVDD power down, analog block disable
write reg 0x7b {5, 0}              // power up 40ms forced

The reference block is up/down when I keep AVDD power up/down.
Register 123 0x7b has no effect. No matter how I set it.

I read capter 2.10, 2.9.1.2.1, 2.9.1.2.2, 2.9.1.2.3 in slaa557 and perhaps I understand it wrong.

Please describe a power down sequence with the needed register values for standby, sleep and shutdown mode for the configuration A in slaa404 page 10.
 

Best Regards

Michael

 

 

Hi, Michael,

Here's a power on and off sequences adapted to your time needs. They work properly in the EVM.

These code lines are in format:

w (write) 30 (I2C address) 00 (number of register) 00 (register value)

#Power off sequence:

w 30 00 01
w 30 01 08
w 30 00 01
w 30 7B 00
w 30 00 01
w 30 02 09
w 30 00 01
w 30 02 08
w 30 00 01
w 30 7B 05

#Power on sequence:

w 30 00 01
w 30 01 08
w 30 00 01
w 30 7B 00
w 30 00 01
w 30 02 09
w 30 00 01
w 30 02 01
w 30 00 01
w 30 7B 05

I hope this helps you. If you still have questions, please let me know.

Best regards,

Luis Fernando Rodríguez S.