24.576M clock PLL or OSC recommend

peiyq

Expert 1400 points

Other Parts Discussed in Thread: LMK61E2, CDCEL824

Hi TI,

Customer system can only input 24.576M clock,but our can output following,Could you recmmand one PLL to us?

The following MCLK frequencies are supported:
■ 9.6 MHz
■ 11.289 MHz
■ 12.288 MHz

BR
Yuanqing

over 5 years ago

0 peiyq over 5 years ago

Expert 1400 points

By the way,input can be 9.6Mhz or 11.289Mhz or 12.288Mhz,output should be 24.576Mhz

0 Ajeet Pal over 5 years ago in reply to peiyq

TI__Genius 12720 points

Hi Peiyq,

Do you have an OSC requirement or PLL? LMK61E2 can be the one oscillator to generate any of the above required frequencies.

For any PLL requirement, I would recommend to use the TI Clock Tree Architect tool to generate your required clocks, which will recommend you the part for your clocks requirement.

https://www.ti.com/tool/CLOCK-TREE-ARCHITECT

Regards,

Ajeet Pal

0 peiyq over 5 years ago in reply to Ajeet Pal

Expert 1400 points

Hi Ajeet，

I want to one PLL，Input of PLL was

■ 9.6 MHz
■ 11.289 MHz
■ 12.288 MHz

Output of PLL was 24.576Mhz.

Could you please recommand one IC or check if CDCEL824 can be solve my question.

Yuanqing

0 Ajeet Pal over 5 years ago in reply to peiyq

TI__Genius 12720 points

Hi Yuanqing,

Any fractional PLL, which can support your required input and output frequencies can be useful for your application.

CDCEL824 may have limited Xtal input frequency start from 10MHz, which may not support 9.6MHz inputs, else it can be ok for your application.

I still would encourage to use clock tree architecture tool for better clock selection. With this i can be suggesting to use CDCI6214.

https://www.ti.com/tool/CLOCK-TREE-ARCHITECT

Regards,

Ajeet Pal

+1 peiyq over 5 years ago in reply to Ajeet Pal

Expert 1400 points

Hi Ajeet,

Got.

Thanks for your help again.

Yuanqing

Clock & timing

Clock & timing forum

24.576M clock PLL or OSC recommend