Grass Valley XSwitch Feb 01 2005 - Manual (Page 29)

28 ©2001 XSWITCH Installation and Operations Manual
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Initialize Uart
1 Start Bit
8 Data Bits
1 Stop Bit
CRC <- 0
Count <- 3
Load Time-Out
(user defined)
Input Byte? Time-Out?
Error
Update CRC
Count<-Count - 1
Load Time-Out
(30 mSec)
Count = 0?
Count = 0?
Error
A
A
Input Byte? Time-Out?
Count<- Len +2
Load Time-Out
(30 mSec)
Update CRC
Count<-Count - 1
Load Time-Out
Count = 0?
Done
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
No