Sm5840 Pcm63

schematic 1
 

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rfbrw

Member
2001-10-26 11:51 pm
.
The second diagram is not clear enough to enable me to make out the input settings for the SAA7350 and thus the output settings for the SM5840A but this can be worked around. How have you connected the SM5840A to the PCM63's and can you float the MCK, MDT and MLE pins?
 

rfbrw

Member
2001-10-26 11:51 pm
.
The best option is to use a microcontroller to change the internal settings of the SM5840 to meet the needs of the PCM63. If you can program a microcontroller it is very easy. A few lines of code and you are done.
The other two possibilities are just plain nasty.:yuck: :yuck: :yuck:
 

rfbrw

Member
2001-10-26 11:51 pm
.
On page 15 of the SM5840A is all the relevant information. All you need to do is load two bytes at start-up.
Byte 1 is 1000 0000.
Byte 2 is 1101 0011
These settings will work but it might be an idea to make some of the bits selectable either via switch or jumpers.
You will also have to disconnect the data lines from the onboard microcontroller, MDT, /MLE and MCK and connect your own microcontroller.