[Boatanchors] Calling Smart People- DS-1077 Oscillator
Brian Harris
cosmophone at yahoo.com
Thu Oct 3 12:46:55 EDT 2013
Dave,
The 2 wire bus from Maxim is actually the I2C (I Squared C) Bus invented by Philips, a company for whom I worked for 27 years as a field application engineer. To my knowledge you can't implement an I2C interface with the serial port for various reasons I can explain by phone. On the other hand you can with a parallel (printer) port via a simple interface consisting of a few gates and pull up resistors or with a USB port with an adapter such as the one at the link below.
http://www.ebay.com/itm/USB-TO-I2C-IIC-UART-TTL-Adapter-Converter-Module-3v-5v-for-CH341T-win7-/181128312345?pt=LH_DefaultDomain_0&hash=item2a2c16b619
http://www.google.com/imgres?imgurl=http://images.elektroda.net/4_1175539769.gif&imgrefurl=http://www.edaboard.com/thread92376.html&h=400&w=600&sz=20&tbnid=q4iiQ5qK8uxgrM:&tbnh=79&tbnw=119&zoom=1&usg=__wLObIXRQacD28co8x7-Nf21piBM=&docid=sT-fY-ODSFKEjM&sa=X&ei=E55NUsDCFtDvrAGwsoCoDw&ved=0CEEQ9QEwAw
Brian Harris, WA5UEK
cell 214-763-5977
email cosmophone at yahoo.com
________________________________
From: David Stinson <arc5 at ix.netcom.com>
To: boatanchors at mailman.qth.net
Sent: Thursday, October 3, 2013 7:02 AM
Subject: [Boatanchors] Calling Smart People- DS-1077 Oscillator
To the many people smarter than me on computers and
itty-bitty chips:
Here's a Maxim DS-1077 Programmable Oscillator
I want to use in a boatanchor project:
https://www.sparkfun.com/products/9089
"The DS1077 features a 2-wire serial interface that allows in-circuit
on-the-fly programming of the programmable prescalers (P0 & P1) and divider
(N) with the desired values being stored in NV (EEPROM) memory."
The datasheets have lots of good info, but as always the writers
make assumptions that I'm smarter than I am.
Programming I can figure-out.... I think.
They've got some published "C" code and there's bound
to be a freeware compiler out there.
What I need to know:
I have a computer with an RS-232 port.
I have a chip with two pins.
Someone please draw me a hardware diagram of how
I'm supposed to hook these two together.
73 DE Dave AB5S
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