A-9
AT8050
www.kontron.com
A.4.1.5
Base + 04h TelClock4: Backplane CLK3A/B configuration (optional)
Offset
Action
D7
D6
D6
D4
D3
D2
D1
D0
04h
Read
0
0
0
0
CLK3AMC
CLK3FRQ
CLK3BE
CLK3AE
Write
NU
NU
NU
NU
CLK3AMC
CLK3FRQ
CLK3BE
CLK3AE
Reset
NA
NA
NA
NA
0
0
0
0
Name
Description
CLK3AMC
Reserved for selection of the AMC that provides the clock for backplane CLK3A/B.
Applicable tot boards with two AMCs.
0: use AMC-B1
1: use AMC-B2
CLK3FRQ
Backplane CLK3A frequency.
0: copy AMC TCKLB to backplane CLK3A/B
1: copy AMC TCLKD to backplane CLK3A/B
CLK3BE
Same as CLK3AE but to CLK3B
CLK3AE
Backplane CLK3A Enable.
0: don’t drive this clock
1: drive this clock
Note:
The FPGA will automatically clear bits CLK3BE and CLK3AE when the AMC is removed since the clock
source is not valid anymore.