Help choosing clock generator

Nuno Lopes

Other Parts Discussed in Thread: CDCE913

Hello.

I was searching for a crystal or oscillator to clock two different motion controller ic's until i saw your (Texas) line of fan out buffer's.

The thing is i'm lost on searching a suitable product.

So i need to clock 2 ic's (in the future they will be 3 ic's so it's fine if it has right now 3 output's);

those ic's can accept 16Mhz or 32Mhz;

Can you point a product that can output these 2 frequencies (preferably programmable trough a GPIO or similar) and that operate at 3.3V?

Regards

Nuno Lopes

over 10 years ago

0 Alan O over 10 years ago

TI__Mastermind 32575 points

I suggest CDCE913 programmable 3-output clock gen which defaults to crystal input fanout mode (see Figure 6 in Datasheet). You can connect a 16 or 32 MHz crystal and buffer 3 copies of 3.3V LVCMOS outputs. Alternatively, you could program the registers and EEPROM to generate either frequency from a 8 MHz crystal.

Regards,
Alan

0 Nuno Lopes over 10 years ago in reply to Alan O

Prodigy 145 points

But the supply voltage is also 3.3V?

And how could i program this?

Regards

Nuno Lopes

0 Alan O over 10 years ago in reply to Nuno Lopes

TI__Mastermind 32575 points

Yes, 3.3V. Programming is optional, but could be done via SMBus interface.

0 Nuno Lopes over 10 years ago in reply to Alan O

Prodigy 145 points

Thank's Alan!

appreciate the time spent!

Regards,

Nuno Lopes

Clock & timing

Clock & timing forum

Help choosing clock generator