TAS5760M Register Access Timing

Sadanori Kato

Other Parts Discussed in Thread: TAS5760M

Hi,

We would like to know the recommended procedure of the register access using I2C for TAS5760M.
Should we set values to each register after we apply power supply and the clocks(MCLK, SCLK, LRCK) to the device?
Or if we apply power supply, can we set values to each register?
We would like to know that for example, if we apply power supply or clocks are input, it is possible to set values of each register after 1ms.
If there is the timing constraint for this device as stated above, could you please tell us about it?
In addition, if we set values to each register after we set SPK_SD pin to low, should we have a wait time?
If we should have it, could you please tell us it in detail?

Best Regards,
Kato

over 11 years ago

0 Don Dapkus over 11 years ago

TI__Guru**** 189401 points

Hi, Kato-san,

We will work with you on this issue.

-d2

0 Sadanori Kato over 11 years ago in reply to Don Dapkus

Guru 36540 points

Hi Don-san,

Thank you for your reply quickly.
We are looking forward to your reply for this issue.

Best Regards,
Kato

0 Damian Lewis over 11 years ago

TI__Mastermind 34775 points

Kato-san,

Please refer to page 53 and 54 of the TAS5760M datasheet for recommend start-up. Once you have 3.3V supply powered up, no external clocks are needed for I2C communication, but the I2S clocks are needed for audio and is recommended to be stable before enable TAS5760M audio output. SPK_SD state doesn't impact I2C communication, but keeping it low can prevent audio artifacts on the amplifier output when programing the registers. The sequence on pg 53 and 54 is a guide to minimize pop and other audio artifacts that can be encountered during start-up. It's not based on a particular device requirement.

0 Sadanori Kato over 11 years ago in reply to Damian Lewis

Guru 36540 points

Hi Damian-san,

Thank you for your explanation.
We understood it.

Best Regards,
Kato

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TAS5760M Register Access Timing