13
ECP5 and ECP5-5G sysCLOCK
PLL/DLL Design and Usage Guide
Figure 11. DCS Operation, Non-Glitchless Operation (MODESEL=’1’)
DCSC Component Definition
The DCSC component can be instantiated in the source code of a design as defined in this section.
Figure 12. DCSC Component Symbol
Table 4. DCSC Component Port Definition
Port Name
I/O
Description
CLK0
I
Clock Input port 0 – Default.
CLK1
I
Clock Input port 1
SEL[1:0]
I
Input Clock Select bit (See Table 6 below)
MODESEL
I
Selects Glitchless (‘0’) or Non-Glitchless
(‘1’) behavior.
DCSOUT
O
Clock Output Port
CLK0
CLK1
SEL[3:0]
“0001”
“0010”
DCSOUT
“0001”
DCSC
CLK 0
CLK 1
SEL [1 :0 ]
DCSOUT
MODESEL
