LMK05318: LMK05318 (单通道) 和LMK05028 (双通道) 之间的使用区别

XiaoTao Ng

Intellectual 420 points

Part Number: LMK05318
Other Parts Discussed in Thread: LMK05028,

你好:

TI的时钟同步解决方案有2款IC: LMK05318 (单通道) 和LMK05028 (双通道) .

我在TI的官网上的资料,有看到基于双通道的LMK05028 有1PPS和PTP 时钟同步解决方案.

如下图

但我想用的芯片是单通道的LMK05318. 通过比较二者的数据手册,发现二者之间,其内部框架有差异. APPL和DPLL的个数和前后串联关系不一致.

请问,用单通道的LMK05318能实现上图的2个功能吗?

祝好!

over 5 years ago

0 XiaoTao Ng over 5 years ago

Intellectual 420 points

在我看来,这二者之间其实架构上存在较大差异,实在拿不准使用单通道的IC,能否实现上图中,双通道IC的功能?

0 Liam Keese over 5 years ago in reply to XiaoTao Ng

TI__Genius 12705 points

Hello,

If I understand correctly, you are wanting to provide IEEE 1588 phase/frequency adjustment using on DCO loop to control all outputs while having 1 PPS input to the primary reference only?

Yes, this should be possible with the HW FINC/FDEC or with register writes to internal DCO of LMK05318 or LMK5028.

Regards,

Clock & timing

Clock & timing forum

LMK05318: LMK05318 (单通道) 和LMK05028 (双通道) 之间的使用区别