Re: UmTRX v1b coming soon

Andrey,

On Sun, May 20, 2012 at 6:46 PM, Andrey Sviyazov andreysviyaz@gmail.com wrote:

1. Is it used somewhere? In the datasheet there is probable errors, for

example, 1PPS is specified as input.

Use this datasheet, here it's marked as output: http://www.transystem.com.tw/product/66/EB-570%20Data%20Sheet%20V1.4.pdf Probably you have an older version of the datasheet.

2. There are inputs Reset and Standby. The first can be left open, and the

second is possible need to be connected to to FPGA.

Yes.

3. There Is RTC_CLK_O we don't need him? And that there may be, 32768?

Could you route it to a test-point or a 2-pin IDC? I don't think we need this, but it's better to have an ability to access it.

4. Which of two UART's better to use or are they equivalent? There are no

any words in datasheet about it.

Use TX0/RX0 (pins 13/14), which is default to NMEA - see the datasheet above.

5. Unfortunately no place for both on PCB and we can use either EB-230 or

EB-570.

Then we have to use EB-570.