Configuring the ARM710T Header Card
© Copyright ARM Limited 1999. All rights reserved.
3-3
Operation is guaranteed only for those table values which generate frequencies up to
40MHz.
Note
Do not select any combination other than shown in the table.
Table 3-1 Core clock frequency settings
Clock frequency
(MHz)
LK5
LK4
GND
CLK
2X
EX
SEL0
SEL1
SEL2 nPD
4
OUT
IN
OUT
OUT
IN
IN
IN
OUT
8
OUT
OUT
IN
OUT
IN
IN
IN
OUT
16
OUT
OUT
IN
OUT
OUT
IN
IN
OUT
20
OUT
IN
OUT
OUT
OUT
OUT
IN
OUT
25
OUT
IN
OUT
OUT
IN
IN
OUT
OUT
32
OUT
OUT
IN
OUT
IN
OUT
IN
OUT
33
OUT
IN
OUT
OUT
OUT
IN
OUT
OUT
40
OUT
OUT
IN
OUT
OUT
OUT
IN
OUT
50
OUT
OUT
IN
OUT
IN
IN
OUT
OUT
66
OUT
OUT
IN
OUT
OUT
IN
OUT
OUT
80
OUT
OUT
IN
OUT
IN
OUT
OUT
OUT
100
OUT
OUT
IN
OUT
OUT
OUT
OUT
OUT
EXTCLK
OUT
OUT
OUT
IN
X
X
X
OUT
0 (stopped)
IN
OUT
OUT
OUT
X
X
X
IN
