"Jamie" t wrote in message
...
i need to get this chip how ever before i do
i need to clear up something here. from the
searches on the net there is obviously a problem.
no data sheets are available to verify pin's of
what i got here in the service manual.
i do know the schematic description is correct because
there are 2 units in this ICOM rig, one works and the other
does not per schematic and basic block operations noted out
in the service manual.
the problem is this, the pages of the service manual that
describes the IC's in detail has this chip listed as a
dual PLL with the pin out in random order compared to the
one being used on the schematic. and maybe 1 or 2 extra
function legs, with that most of the pin names are there as
noted in the schematic how ever, if i was to purchase this
hard to find obsolete (obviously) chip ? which one am i
going to get? is maybe the reason why there is no datasheet
available for it? or did ICOM do this to throw a bone in on the
process ?., the rest of the chips details seem to be fine how ever.
P.S.
the Part # on the schematic and on the detail sheet are
identical. M54929P
can some one shed some light on this?


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5


Full datasheet for this common PLL IC is available on
www.datasheetarchive.com

Arfa

i need to get this chip how ever before i do
i need to clear up something here. from the
searches on the net there is obviously a problem.
no data sheets are available to verify pin's of
what i got here in the service manual.
i do know the schematic description is correct because
there are 2 units in this ICOM rig, one works and the other
does not per schematic and basic block operations noted out
in the service manual.
the problem is this, the pages of the service manual that
describes the IC's in detail has this chip listed as a
dual PLL with the pin out in random order compared to the
one being used on the schematic. and maybe 1 or 2 extra
function legs, with that most of the pin names are there as
noted in the schematic how ever, if i was to purchase this
hard to find obsolete (obviously) chip ? which one am i
going to get? is maybe the reason why there is no datasheet
available for it? or did ICOM do this to throw a bone in on the
process ?., the rest of the chips details seem to be fine how ever.
P.S.
the Part # on the schematic and on the detail sheet are
identical. M54929P
can some one shed some light on this?


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

Arfa Daily wrote:

"Jamie" t wrote in message
...

i need to get this chip how ever before i do
i need to clear up something here. from the
searches on the net there is obviously a problem.
no data sheets are available to verify pin's of
what i got here in the service manual.
i do know the schematic description is correct because
there are 2 units in this ICOM rig, one works and the other
does not per schematic and basic block operations noted out
in the service manual.
the problem is this, the pages of the service manual that
describes the IC's in detail has this chip listed as a
dual PLL with the pin out in random order compared to the
one being used on the schematic. and maybe 1 or 2 extra
function legs, with that most of the pin names are there as
noted in the schematic how ever, if i was to purchase this
hard to find obsolete (obviously) chip ? which one am i
going to get? is maybe the reason why there is no datasheet
available for it? or did ICOM do this to throw a bone in on the
process ?., the rest of the chips details seem to be fine how ever.
P.S.
the Part # on the schematic and on the detail sheet are
identical. M54929P
can some one shed some light on this?


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5



Full datasheet for this common PLL IC is available on
www.datasheetarchive.com

Arfa


thank you very much, i looked there before and they didn't have it.
thanks.
this data seems to match what is on the schematic, this means the
detailed sheet in the service manual is incorrect.


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

"Jamie" t wrote in message
...
Arfa Daily wrote:

"Jamie" t wrote in
message ...

i need to get this chip how ever before i do
i need to clear up something here. from the
searches on the net there is obviously a problem.
no data sheets are available to verify pin's of
what i got here in the service manual.
i do know the schematic description is correct because
there are 2 units in this ICOM rig, one works and the other
does not per schematic and basic block operations noted out
in the service manual.
the problem is this, the pages of the service manual that
describes the IC's in detail has this chip listed as a
dual PLL with the pin out in random order compared to the
one being used on the schematic. and maybe 1 or 2 extra
function legs, with that most of the pin names are there as
noted in the schematic how ever, if i was to purchase this
hard to find obsolete (obviously) chip ? which one am i
going to get? is maybe the reason why there is no datasheet
available for it? or did ICOM do this to throw a bone in on the
process ?., the rest of the chips details seem to be fine how ever.
P.S.
the Part # on the schematic and on the detail sheet are
identical. M54929P
can some one shed some light on this?


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5



Full datasheet for this common PLL IC is available on
www.datasheetarchive.com

Arfa
thank you very much, i looked there before and they didn't have it.
thanks.
this data seems to match what is on the schematic, this means the
detailed sheet in the service manual is incorrect.


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5


Not uncommon. I see that lots in manuals. Hope it helps you to fix it. Which
Icom is it ?

Arfa