Yes. Unfortunately, with the form factor of the PocketBeagle, it was not able to use a standard JTAG connector footprint. I do not know of any standard cables or connectors to connect to those pads. I would also ask on the BeagleBoard forums.
Yes. The OSD335x-SM is a smaller and more optimized module than the original OSD335x. Based on customer feedback from the OSD335x, we optimized the pin out to ease routing and reduced the size to enable more space constrained applications (The OSD335x-SM is 60% smaller than a discrete implementation: https://octavosystems.com/2017/08/30/smaller-cheaper-pcbs/)
Yes. The OSD335x-SM is a smaller and more optimized module than the original OSD335x. Based on customer feedback from the OSD335x, we optimized the pin out to ease routing and reduced the size to enable more space constrained applications (The OSD335x-SM is 60% smaller than a discrete implementation: https://octavosystems.com/2017/08/30/smaller-cheaper-pcbs/)