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neonhomer
KK4BFN
Premium
join:2004-01-27
Edgewater, FL
Reviews:
·Bright House
reply to koitsu

Re: Identify this RAM... and some components..

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Sorry for the quality and lighting. I just took these with my cell phone (HTC EVO 4G LTE. Supposed to be a 8MP.) Lighting is just my lights in my office.

FYI - The four black connectors at the bottom are for RS-485 (BACNet). The orange one at the upper left is LONWorks. This device is the "graphical front end" for a HVAC Control system.


koitsu
Premium,MVM
join:2002-07-16
Mountain View, CA
kudos:23
Working from left to right. First picture contains the following:

* Echelon FTT-10A (model 50051R) is a twisted pair transceiver
* Some miscellaneous chip (can't tell due to blur)
* Xilinx controller of some kind (can't tell due to blur)
* ST Semicondumer Flash chip
* Echelon 803P-0001 chip is probably a RAM chip of some kind that's used in combination with the transceiver. Echelon stuff is certainly related to the yellow/orange port on the left
* Some kind of PLCC, possibly/probably a BIOS
* Texas Instrument controller of some kind (can't tell due to blur)
* (below the TI chip) Some miscellaneous chip, probably RAM (can't tell due to blur)
* (below the ST chip) Some miscellaneous chip (can't tell due to blur)

Second picture contains the following:

* (2) Texas Instrument LV165A shift register chips
* (2) Texas Instrument TL16C7528 serial (UART) controllers with 64-byte FIFOs. Think of these as your classic "16550 UART/serial ports"
* (below TI chip) Some miscellaneous chip (can't tell; don't care)
* Intel 82551ER 10/100mbit Ethernet controller with integrated PHY
* "Large green HSF" is, as myself and others have said, almost certainly the main CPU and might be a SOC of some kind (not sure)

Third/fourth picture contains the following:

* Miscellaneous chips that are probably shift registers or other simple logic chips, possibly voltage-related oo
* (2) Maxim Integrated MAX3241CWI RS232 serial controllers
* (Not a chip) Murata-PS NMD050505SC DC/DC power converter

Are the two silver ports at the bottom of the board USB ports? It's hard for me to tell. If so, that makes me wonder where the USB controller is, unless it's part of the SOC. It could be on the opposite side of the PCB too. If they aren't USB ports, okay!

Hope this helps.
--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.

n_w95482
Premium
join:2005-08-03
Ukiah, CA
said by koitsu:

Are the two silver ports at the bottom of the board USB ports?

They appear to be RS-232 ports using RJ-45 jacks.
--
KI6RIT


koitsu
Premium,MVM
join:2002-07-16
Mountain View, CA
kudos:23
said by n_w95482:

said by koitsu:

Are the two silver ports at the bottom of the board USB ports?

They appear to be RS-232 ports using RJ-45 jacks.

Thanks! Those would probably be driven by the Maxim controllers then.
--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.


neonhomer
KK4BFN
Premium
join:2004-01-27
Edgewater, FL
Reviews:
·Bright House
reply to koitsu
said by koitsu:

Are the two silver ports at the bottom of the board USB ports? It's hard for me to tell. If so, that makes me wonder where the USB controller is, unless it's part of the SOC. It could be on the opposite side of the PCB too. If they aren't USB ports, okay!

Hope this helps.

Not USB... but I wish the device had it sometimes! They are actually RS-232 ports. We normally use them to get into the "Serial Shell" to reset or reflash the device if needed.

The Echelon stuff is for LONworks. It is a communications platform for HVAC and control systems.

I was going to bring my digital from the house and take pictures with it (it is a 10MP camera with a better lens), but the battery was dead and I couldn't find the damn charger. Maybe Monday if anyone is interested...

Also, I can shoot some of the other stuff we use.... if interested..
--
"F is for Fire that burns down the whole town...
U is for Uranium...... Bombs...
N is for NO SURVIVORS!!!!!" Sheldon Plankton

Keep Calm and Carry On