LM49352 timing info

TI Lady

Their LM49352 datasheet has no timing information for the I2C interface, only an overview of bit locations. Can you please provide setup/hold etc. to do FPGA work on that interface.

over 12 years ago

0 Jonathan Bender over 12 years ago

TI__Expert 7895 points

Page 28 of the LM49352 datasheet has the I2C timing parameters copied below - are there additional specifications you were looking for?

Jonathan

0 TI Lady over 12 years ago in reply to Jonathan Bender

Genius 4025 points

So, that is only one of the interface types that the chip provides. It is for configuration, not Digital Audio I/O. There is an I2S interface. Please see if you can find that. It’s not on the datasheet.

0 Don Dapkus over 12 years ago in reply to TI Lady

TI__Guru**** 189401 points

Hi, TI Lady,

This device is fully compatible with Philips, no, NXP, I2S specification.

-d2

0 TI Lady over 12 years ago in reply to Don Dapkus

Genius 4025 points

I don't understand this response.

Are you saying there is no support for I2S on an audio converter?

thanks,

0 LeonardEllis over 12 years ago in reply to TI Lady

TI__Guru 71526 points

Hi A..

In ESP, there is an App Note for interfacing with i2S: Interfacing an I2S Device to an MSP430 Device (Rev. A) . The format acceptable is shown in the LM49352 datasheet Fig 64.

~Leonard

0 Don Dapkus over 12 years ago in reply to TI Lady

TI__Guru**** 189401 points

Hi, TI Lady,

Sorry to confuse you, I was trying to be funny that the i2c and i2s specifications were originally authored by Philips Semiconductor, but about 10+ years ago, Philips spun off their IC business to NXP.

So, yes, this device is fully i2s compliant. Does your customer have an issue, or did they just ask for an i2s codec? Because, if that is the case, we have better choices than this one.