amirke
Member level 5
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Hi all,
I Have a project with CPU (PIC18F) and a caller ID unit (Holtek HT9032C)
I am getting from the HT9032C all signals as expected: Ring detect and CDET are function OK.
But On Dout I am getting all the time a pattern of '1' an '0' ("10101010")
About 500uSec in '1' and 600uSec in '0' logic, Gap of 4mSec between the "10101010" patterns. in the Gap its '0' logic.
This is all in idle.
See picture
No extra information between the first and second ring.
DoutC is always high. no coocked information at all.
The outputs rate should be 1200bps but its not close even.
I implemeted it exactly as in datasheet. I dont know what can cause it.
Please assist.
Thanks,
Amir![IMG_20150301_095155.jpg IMG_20150301_095155.jpg](https://www.edaboard.com/data/attachments/50/50959-129a908048925e61ca2b5a38d05b5bc6.jpg)
I Have a project with CPU (PIC18F) and a caller ID unit (Holtek HT9032C)
I am getting from the HT9032C all signals as expected: Ring detect and CDET are function OK.
But On Dout I am getting all the time a pattern of '1' an '0' ("10101010")
About 500uSec in '1' and 600uSec in '0' logic, Gap of 4mSec between the "10101010" patterns. in the Gap its '0' logic.
This is all in idle.
See picture
No extra information between the first and second ring.
DoutC is always high. no coocked information at all.
The outputs rate should be 1200bps but its not close even.
I implemeted it exactly as in datasheet. I dont know what can cause it.
Please assist.
Thanks,
Amir
![IMG_20150301_095155.jpg IMG_20150301_095155.jpg](https://www.edaboard.com/data/attachments/50/50959-129a908048925e61ca2b5a38d05b5bc6.jpg)