8T49N287 Datasheet, PDF (34/75 Pages) Integrated Circuit Systems – Optional Fast Lock function

8T49N287 DATA SHEET
Bit Field Name
CLK_SEL6[2:0]
CLK_SEL7[2:0]
Rsvd
Output Clock Source Control Register Block Field Descriptions
Field Type Default Value Description
Clock Source Selection for output Q6, nQ6: Do not select Input Reference 0 or 1 if that
input is faster than 250MHz:
000 = PLL0
001 = PLL1
R/W
000b
010 = Output Q2, nQ2
011 = Output Q3, nQ3
100 = Input Reference 0 (CLK0)
101 = Input Reference 1 (CLK1)
110 = Reserved
111 = Crystal input
Clock Source Selection for output Q7, nQ7: Do not select Input Reference 0 or 1 if that
input is faster than 250MHz:
000 = PLL0
001 = PLL1
R/W
101b
010 = Output Q2, nQ2
011 = Output Q3 nQ3
100 = Input Reference 0 (CLK0)
101 = Input Reference 1 (CLK1)
110 = Reserved
111 = Crystal input
R/W
-
Reserved. Always write 0 to this bit location. Read values are not defined.
FEMTOCLOCK^® NG OCTAL UNIVERSAL FREQUENCY TRANSLATOR
34
REVISION 5 07/09/15