Batboard

HI:

I am Mapping out the 4105 and 4106 XTS5000
Program cable, and I have a concern about the
flat 8 Pin IC.

Last resort I have is to remove the chip and
have it analized, but I wish to avoid that if
possible

Its all laid out, and the " last Componet " is
what we are concerned about....And I wish
to stay AWAY from a subsitute unless there
is no other way....

I will be posting the diagram soon on Batlabs soon
as we are sure of all the values, and proven it will
be Stable and Reliable.

Six of the Pins are Grounded.

I have had even some " Top Level " Motorola
Executives try and get the information, and even
they have not been much help.

Goal is to make a Professional Clone ( and perhaps
add it to a project that is being built.

Tried all the " Other " approches, Digi-Key, Mouser,
ect, { Editied } Confidence is high this item is a
1 pin Eprom.

This is the " Only " Discription I have so far of the
IC in Question. Its used in the Ribless RKN4105A Cable

l l l l <<<<====Those are Pins
==========
------------( L3 )
DS2433
0328A9
231AB
==========
l l l l
===========================

For those who want to " Build there own" here is a
simple Physical Layout...


I think ( L3 ) maybe the MFG,

Anyhow, any help appreciated, and perhaps a reward for
the right information....

Monty

You sure it isn't an eeprom?



After reading about this chip it seems they may be using one as a way of interfacing to a data bus.




SILICON LABEL DESCRIPTION
The DS2433 4kb 1-Wire® EEPROM identifies and stores relevant information about the product to which
it is associated. This lot or product specific information can be accessed with minimal interface, for
example a single port pin of a microcontroller. The DS2433 consists of a factory-lasered registration
DS2433
4kb 1-Wire EEPROM
PRELIMINARY
NC
NC
DATA
GND
NC
2
3
4
8
7
6
5
1
8-Pin SO (208mil)
NC
NC
NC
1 2 3
3 2 1
PR-35
BOTTOM VIEW
PR-35
1-Wire is a registered trademark of Dallas Semiconductor.
MicroLAN is a trademark of Dallas Semiconductor.
http://www.maxim-ic.com
DS2433
2 of 21
number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (23h) plus
4096 bits of user-programmable EEPROM. The power to read and write the DS2433 is derived entirely
from the 1-Wire communication line. The memory is organized as sixteen pages of 256 bits each. The
scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the
scratchpad where it may be read back for verification. A copy scratchpad command will then transfer the
data to memory. This process insures data integrity when modifying the memory. The 64-bit registration
number provides a guaranteed unique identity which allows for absolute traceability and acts as node
address if multiple DS2433 are connected in parallel to form a local network. Data is transferred serially
via the 1-Wire protocol which requires only a single data lead and a ground return. The PR-35 and SOIC
packages provide a compact enclosure that allows standard assembly equipment to handle the device
easily for attachment to printed circuit boards or wiring. Typical applications include storage of
calibration constants, board identification and product revision status.
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major control and memory sections of
the DS2433. The DS2433 has three main data components: 1) 64-bit lasered ROM, 2) 256-bit scratchpad,
and 3) 4096-bit EEPROM. The hierarchical structure of the 1-Wire protocol is shown in Figure 2. The
bus master must first provide one of the six ROM Function Commands, 1) Read ROM, 2) Match ROM,
3) Search ROM, 4) Skip ROM, 5) Overdrive-Skip ROM or 6) Overdrive-Match ROM. Upon completion
of an overdrive ROM command byte executed at standard speed, the device will enter Overdrive mode
where all subsequent communication occurs at a higher speed. The protocol required for these ROM
function commands is described in Figure 9. After a ROM function command is successfully executed,
the memory functions become accessible and the master may provide any one of the four memory
function commands. The protocol for these memory function commands is described in Figure 7. All data
is read and written least significant bit first.

if it's the USB cable i think it IS an eeprom.

here's why:

each USB device has to have a proprietary number for the OS to recognize both the manufacturer and the actual device.

this controls the speed at which data is sent to the device, etc etc etc


?


doug

HI:

Well ?

Easy way of making that determination is to
" Buy One "

I have ordered a few, and we will see if perhaps
it truly is a specialized Eprom.

I will pull the IC off the Cable I have and
make a [ A vs B ] comparison.

I had a very similar issue with a Toshiba Propriatory
Password Chip, but once it was removed, and replaced
with a suitable blank, it restored a number of these
computers I use for programming. Great Security, but
if one dies with the password, its a hassle to restore

I received a lot of miss-information regarding
this chip in the Programming cable Some said it
was infact what you posted, one gave a different
story. These days its tough to " Know for
sure " if you are getting the correct story from /\/\

Sure sad to see a favorite company take such
views as " Replacement " of a Cable rather than
a simple repair.

Truly, using Hot Air as a re-work tool in soldering
is not all that bad, and tools are becomming cheaper
every year.

Now, one can buy nozles and use hot air, and tips
are becomming obsolete for soldering small parts.

Appreciate the Technical Information, and Yes
only one pin appears to be used....( After its been Programmed )

Neat little circuit !

Monty

Monty, with what Batdude says about each USB item having to have its own unique number then this must be the part.

I read through the .pdf data sheet and it mentioned that no two chips are alike because each have their own unique identification number.



mancow

HI;

Yes !

I tend to agree more with Board Memebers than
the " So called " Factory Engineers.

I am respectfully holding back what I would truly
like to say.

Indeed, one learns something new every day, and
I just placed a order for all the Software, and Programming
materials for it.

I am sure it will work just fine, and I have a unit
already Prototyped and ready. Once I varify that
it is just as stable as the Original Motorola Cable
I will build a small PC board and mate it with the DB
25 Connector rather than the Radio Connector header.

That I am sure will be a lot easier for Batboard members
to deal with. Not everyone has all these dam special
tools to make one like the factory.

Again, appricate the helpful tips, I should have taken
the advice of a friend of mine a month ago.

I just do not keep up to date on all the " New " stuff
these days....Its tending to overwhelm me and there
is always something new that is required.

=====================================

For general interest....

I have herd through the grape vine sorta speak, someone
has already made one of these, and is using a " Rubber Mic
Connector Cover " for the Programming Contacts.

Although it may work for some, I would urge anyone who
plans to " Build Their Own " is to AVOID the Rubber Mic
Cover to mount the Pogo Pins.

A technical tip from Monty

Motorola DOES OFFER ( due to yours truly ) a PC Board
with ALL the Pogo Pins fully Mounted for about 35.00. The
Part Number is:

0180302E30

U can order the " Proper PC Board " with Contacts and use
the Old Shell from a Mic Connector......A more costly approch,
BUT sure could save on a 379.00 Code Plug Restoration charge.



Monty