crystal used in TMS570LS3137 ZWT that drives system clock

Susheela Siddappa

Prodigy 90 points

“what is the crystal used in the board, which would drive the system clock?”, is it 18MHZ crystal?

over 13 years ago

0 QJ Wang over 13 years ago

TI__Guru**** 200146 points

Susheela,

There are two crystals and one oscillator on the HDK. The crystal for MCU is a TXC 16MHz crystal. This crystal's temp range is -40~70degree, it may not meet your application.

TI strongly encourages each customer to submit samples of the device to the resonator/crystal

vendors for validation. The vendors are equipped to determine what load capacitors will best tune
their resonator/crystal to the microcontroller device for optimum start-up and operation over
temperature/voltage extremes.

Regards,

0 Susheela Siddappa over 13 years ago in reply to QJ Wang

Prodigy 90 points

what do you mean by " it may not meet your application" ?

0 Susheela Siddappa over 13 years ago in reply to QJ Wang

Prodigy 90 points

Please let me know the oscillator frequency too ?

0 A Arora over 13 years ago in reply to Susheela Siddappa

TI__Mastermind 30845 points

Susheela,

As the temperature range of the crystal we used in the HDK does not cover the entire operating range of our devices (-40 to 125C), it may not be suitable for your application.

The crystal used for the micro is 16MHz. The oscillator is hooked up to RMII refclk and is 25MHz.

You can find the schematics of the HDK here: http://processors.wiki.ti.com/images/e/ec/TMS570LS31x_HDK_Schematics_RevE.pdf

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crystal used in TMS570LS3137 ZWT that drives system clock