ADC Sync pins on MCF52223 - where are they?
Harjit Singh <[email protected]> Wed, 11 Mar 2009 23:25:54 -0700
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers.coldfire |
|---|---|
| Message-ID | <[email protected]> |
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I'm looking at using the MCF52223 and wanted to use a timer to kick of a se=
t of ADC conversions.
=20
The MCF52223 datasheets=2C ADC chapter block diagram shows a SYNCx signal a=
nd then the description says that a conversion can be initiated by assertin=
g a positive edge on SYNC0 input.
=20
If I search for SYNC0 there is no such pin. The language makes me believe t=
hat this should be a pin.
=20
In the signals section=2C the ADC Signals section talks about ADC Sync Inpu=
ts and calls them SYNCA / SYNCB <- huh? what happened to SYNC0?
=20
So=2C for the longest time=2C I thought that SYNCA and SYNCB must be the AD=
C sync inputs until just a few minutes ago=2C when I came across a SYNCn se=
t of signals in the General Purpose Timer section and this section refers t=
o SYNCA and SYNCB for synchronization of the timer counter.
=20
I'd love to know:
* Do the ADCs have sync inputs?
* If so=2C what are they called and what are their pin #s for the 100 pin=
QFP package?
=20
Is there updated documentation around this?
=20
Thanks=2C
Harjit
PS: The MCF52223 Reference manual talks about CANTX and CANRX and those don=
't exist on the MCF52223...
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I'm looking at using the MCF52223 and wanted to use a timer to kick of a se=
t of ADC conversions.<BR>
 =3B<BR>
The MCF52223 datasheets=2C ADC chapter block diagram shows a SYNCx signal a=
nd then the description says that a conversion can be initiated by assertin=
g a positive edge on SYNC0 input.<BR>
 =3B<BR>
If I search for SYNC0 there is no such pin. The language makes me believe t=
hat this should be a pin.<BR>
 =3B<BR>
In the signals section=2C the ADC Signals section talks about ADC Sync Inpu=
ts and calls them SYNCA / SYNCB <=3B- huh? what happened to SYNC0?<BR>
 =3B<BR>
So=2C for the longest time=2C I thought that SYNCA and SYNCB must be the AD=
C sync inputs until just a few minutes ago=2C when I came across a SYNCn se=
t of signals in the General Purpose Timer section and this section refers t=
o SYNCA and SYNCB for synchronization of the timer counter.<BR>
 =3B<BR>
I'd love to know:<BR>
* Do the ADCs have sync inputs?<BR>
 =3B * If so=2C what are they called and what are their pin #s for the =
100 pin QFP package?<BR>
 =3B<BR>
Is there updated documentation around this?<BR>
 =3B<BR>
Thanks=2C<BR>
Harjit<BR>
PS: The MCF52223 Reference manual talks about CANTX and CANRX and those don=
't exist on the MCF52223...<BR><br /><hr />Windows Live=99 Contacts: Organi=
ze your contact list. <a href=3D'http://windowslive.com/connect/post/marcu=
satmicrosoft.spaces.live.com-Blog-cns!503D1D86EBB2B53C!2285.entry?ocid=3DTX=
T_TAGLM_WL_UGC_Contacts_032009' target=3D'_new'>Check it out.</a></body>
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