## Divider in Ensemble RXTX

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• I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not 7040 Did a double check and everything seems right other than that. What am I missing?
Message 1 of 7 , Aug 1 6:56 PM
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I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not 7040

Did a double check and everything seems right other than that.

What am I missing?

Thanks 73s

KC5KWZ
• ... From: kc5kwz To: Sent: Tuesday, August 02, 2011 1:56 AM Subject: [softrock40] Divider in Ensemble RXTX
Message 2 of 7 , Aug 1 9:57 PM
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----- Original Message -----
From: "kc5kwz" <jrbritton@...>
To: <softrock40@yahoogroups.com>
Sent: Tuesday, August 02, 2011 1:56 AM
Subject: [softrock40] Divider in Ensemble RXTX

>I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not 7040
>
> Did a double check and everything seems right other than that.
>
> What am I missing?
>

Probably a good joint to pins 7/8 on the Si570

73 Alan G4ZFQ
• Yes, what you see is right. The net effect is to divide the 40m clock cycle into four 90 degree segments when the Si570 is clocking at 28 MHz. QSE CLK 0 and 1
Message 3 of 7 , Aug 2 3:32 AM
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Yes, what you see is right.  The net effect is to divide the 40m clock cycle into four 90 degree segments when the Si570 is clocking at 28 MHz.  QSE CLK 0 and 1 for example will provide the codes 10, 11, 01, and 00 at a 40m rate.

73,
 --```Tony Parks kb9yig@... http://www.kb9yig.com ```
On Tue, 2011-08-02 at 01:56 +0000, kc5kwz wrote:

I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not 7040

Did a double check and everything seems right other than that.

What am I missing?

Thanks 73s

KC5KWZ

• ... From: Tony Parks Subject: Re: [softrock40] Divider in Ensemble RXTX One of us has got confused. KC5KWZ said I have frequency on the QSE CLK 0,1,2 and
Message 4 of 7 , Aug 2 7:52 AM
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----- Original Message -----
From: "Tony Parks"
Subject: Re: [softrock40] Divider in Ensemble RXTX

One of us has got confused.

KC5KWZ said ">> I have frequency on the QSE CLK 0,1,2 and 3 all reading as
14080 not
>> 7040

This confused me, I see only QSE 0, 1 and QSD 0, 1

These should be 1/4 of the Si570 clock?
If they are 14.08Mhz then the Si570 is running at 56.32MHz, not being
controlled by the AVR?

73 Alan G4ZFQ

> Yes, what you see is right. The net effect is to divide the 40m clock
> cycle into four 90 degree segments when the Si570 is clocking at 28 MHz.
> QSE CLK 0 and 1 for example will provide the codes 10, 11, 01, and 00 at
> a 40m rate.
>
> 73,
> --
>
> Tony Parks
> kb9yig@...
> http://www.kb9yig.com
>
>
>
>
> On Tue, 2011-08-02 at 01:56 +0000, kc5kwz wrote:
>
>>
>>
>> I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not
>> 7040
>>
>> Did a double check and everything seems right other than that.
>>
>> What am I missing?
>>
>> Thanks 73s
>>
>> KC5KWZ
>>
>>
>>
>>
>>
>
• Right you are Alan. Each of the QSD 0 and 1 signals, (or QSE 0 and 1 signals), are at 1/4 of the Si570 frequency and in quadrature with each other. Sorry
Message 5 of 7 , Aug 2 10:27 AM
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Right you are Alan.   Each of the QSD 0 and 1 signals, (or QSE 0 and 1 signals),  are at 1/4 of the Si570 frequency and in quadrature with each other.

Sorry for my not properly thought through posting.   (I wander is many hours spent counting resistors addles the brain?)

73,
 --```Tony Parks kb9yig@... http://www.kb9yig.com ```
On Tue, 2011-08-02 at 14:52 +0000, Alan wrote:

----- Original Message -----
From: "Tony Parks"
Subject: Re: [softrock40] Divider in Ensemble RXTX

One of us has got confused.

KC5KWZ said ">> I have frequency on the QSE CLK 0,1,2 and 3 all reading as
14080 not
>> 7040

This confused me, I see only QSE 0, 1 and QSD 0, 1

These should be 1/4 of the Si570 clock?
If they are 14.08Mhz then the Si570 is running at 56.32MHz, not being
controlled by the AVR?

73 Alan G4ZFQ

> Yes, what you see is right. The net effect is to divide the 40m clock
> cycle into four 90 degree segments when the Si570 is clocking at 28 MHz.
> QSE CLK 0 and 1 for example will provide the codes 10, 11, 01, and 00 at
> a 40m rate.
>
> 73,
> --
>
> Tony Parks
> kb9yig@...
> http://www.kb9yig.com
>
>
>
>
> On Tue, 2011-08-02 at 01:56 +0000, kc5kwz wrote:
>
>>
>>
>> I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not
>> 7040
>>
>> Did a double check and everything seems right other than that.
>>
>> What am I missing?
>>
>> Thanks 73s
>>
>> KC5KWZ
>>
>>
>>
>>
>>
>

• ... Subject: Re: [softrock40] Divider in Ensemble RXTX ... Tony, I m glad to see that occasionally someone else makes a bad post. I don t want a monopoly. I
Message 6 of 7 , Aug 2 11:31 AM
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----- Original Message -----
Subject: Re: [softrock40] Divider in Ensemble RXTX

>
> Sorry for my not properly thought through posting. (I wander is many
> hours spent counting resistors addles the brain?)
>

Tony,

I'm glad to see that occasionally someone else makes a bad post. I don't
want a monopoly.
I don't envy you with your counting but am very glad you do it!

73 Alan G4ZFQ
• I reworked the solder on the SI570. Got it working. Thanks guys!
Message 7 of 7 , Aug 2 9:01 PM
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I reworked the solder on the SI570. Got it working.
Thanks guys!

--- In softrock40@yahoogroups.com, "kc5kwz" <jrbritton@...> wrote:
>
> I have frequency on the QSE CLK 0,1,2 and 3 all reading as 14080 not 7040
>
> Did a double check and everything seems right other than that.
>
> What am I missing?
>
> Thanks 73s
>
> KC5KWZ
>
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