XE-216 Project Review
Posted: Tue Mar 07, 2017 9:50 pm
Hello,
I had success prototyping my design with the xC-200-MC-AUDIO development board and some other EVMs. So, time to move to my first prototype PCB of my own design. I've read through all the relevant info I can find regarding PSU requirements & clocking, but wanted to share my schematics to see if there is anything I've missed. I included plots with just the relevant XE-216 components. Some questions/comments:
1. Any comment as to using MCLK_FSEL with a Mux VS using I2C to change the Si5351A every-time the sample rate needs to be changed? Any problem doing it either way?
2. It's been some time since I've done a bus powered USB design - does my protection look OK? How about the use of the Buck/Boost to make sure analog (not included in this schematic set) gets a steady 5v?
3. I measured current consumption of my design to be less than 250mA. I believe I read that as the complexity of my application grows, so does power consumption. Perhaps I can move to a processor with less cores, if I'm not using the XE-216 to it's full capabilities. Would that be pin compatible?
4. Did I miss anything with the PSU timing? It should follow the reference design pretty closely.
5. Regarding construction for this first prototype, I plan on using solder paste, a stencil and little toaster-reflow. It doesn't seem like I'll have any issues with these SMD packages working in this manner.
Thanks!
RitchRock
I had success prototyping my design with the xC-200-MC-AUDIO development board and some other EVMs. So, time to move to my first prototype PCB of my own design. I've read through all the relevant info I can find regarding PSU requirements & clocking, but wanted to share my schematics to see if there is anything I've missed. I included plots with just the relevant XE-216 components. Some questions/comments:
1. Any comment as to using MCLK_FSEL with a Mux VS using I2C to change the Si5351A every-time the sample rate needs to be changed? Any problem doing it either way?
2. It's been some time since I've done a bus powered USB design - does my protection look OK? How about the use of the Buck/Boost to make sure analog (not included in this schematic set) gets a steady 5v?
3. I measured current consumption of my design to be less than 250mA. I believe I read that as the complexity of my application grows, so does power consumption. Perhaps I can move to a processor with less cores, if I'm not using the XE-216 to it's full capabilities. Would that be pin compatible?
4. Did I miss anything with the PSU timing? It should follow the reference design pretty closely.
5. Regarding construction for this first prototype, I plan on using solder paste, a stencil and little toaster-reflow. It doesn't seem like I'll have any issues with these SMD packages working in this manner.
Thanks!
RitchRock