[time-nuts] RS232 / GPS interface/prototyping board

Herbert Poetzl herbert at 13thfloor.at
Tue Jun 14 12:39:35 EDT 2016


On Tue, Jun 14, 2016 at 07:19:54AM -0700, Nick Sayer via time-nuts wrote:
> That’s not a USB chip, it’s an RS-232 level converter.

> I am not aware of any USB 2 UART devices (that doesn’t
> necessarily mean much). They just don’t need to be that fast.

All modern FTDIs are USB 2.0 (for example the FT232R,
FT2232H and FT4232H) because they also allow for other
types of data transfer besides the UART which require
USB 2.0.

Best,
Herbert

>> On Jun 13, 2016, at 11:53 PM, Gary E. Miller <gem at rellim.com> wrote:

>> Yo Mark!

>> On Tue, 14 Jun 2016 00:53:10 +0000
>> Mark Sims <holrum at hotmail.com> wrote:

>>> The 1PPS signal is
>>> routed to the RS-232 connector via the MAX232A, 

>> Why did you use a USB 1.1 chip instead of a USB 2.0 chip?  The PPS
>> performance is much better with the Hi Speed chips.

>> RGDS
>> GARY
>> ---------------------------------------------------------------------------
>> Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
>> 	gem at rellim.com  Tel:+1 541 382 8588
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