Maxim Integrated 73M1822/73M1922 Implementers Guide - Manual (Page 9)

UG_1x22_052 73M1822/73M1922 Implementer’s Guide
Rev. 1.0 9
Barrier Sync
SYNL == 1?
SLHS == 1?
SLEEP = 1
Wait 10 ms
SLEEP = 0
End
No
No
No
Yes
Yes
Yes
Restore
Register
Settings
LOKDET==0?
CNT++ CNT == 1? CNT == 2?
CHNGFS=1
READ
RG03,RG0D
Wait 20 ms
The temporary variables defined in this procedure are:
CNT1 = Resync Counter. Initial value = 0
Begin : BARRIER CHECK
1. Read RG03.
2. If SYNL == 0 goto RESYNC.
3. Read RG0D.
4. If LOKDET == 0 goto RESYNC.
5. If SLHS == 1 goto RESYNC.
6. Restore Previous Register Settings and go On Hook
END