wuchy143
Member
Hi All,
I'm working on a USB hub design. It's a 5 port hub. 1 upstream port and the others are all downstream ports.
I'm grappling with where to place the termination resistors for both the upstream and downstream ports. All the literature I have read says to: "Place both the Ct and Rt resistors as close to the driver chip as practicable." I assume they mean the hub in my case. Though, they don't give too much theory as why you would do that. Also, does that apply to both the upsteam and downstream ports? If anyone has some background with this I'd really appreciate it. Thanks
I'm working on a USB hub design. It's a 5 port hub. 1 upstream port and the others are all downstream ports.
I'm grappling with where to place the termination resistors for both the upstream and downstream ports. All the literature I have read says to: "Place both the Ct and Rt resistors as close to the driver chip as practicable." I assume they mean the hub in my case. Though, they don't give too much theory as why you would do that. Also, does that apply to both the upsteam and downstream ports? If anyone has some background with this I'd really appreciate it. Thanks