SoCKit User Manual
13
www.terasic.com
December 1, 2015
Off: HSMC In-chain
3
3
.
.
1
1
.
.
2
2
F
F
P
P
G
G
A
A
C
C
o
o
n
n
f
f
i
i
g
g
u
u
r
r
a
a
t
t
i
i
o
o
n
n
M
M
o
o
d
d
e
e
S
S
w
w
i
i
t
t
c
c
h
h
The Dipswitch SW6 (See
Figure 3-3)
can set the MSEL pins to decide the FPGA configuration
modes.
Table 3-2
shows the switch controls and descriptions.
Table 3-3
gives the MSEL pins
setting for each configuration scheme of Cyclone V devices. FPGA default works in ASx4 mode.
However, once the FPGA is in AS x4 mode, and after successfully configuring the FPGA via the
EPCQ256, the SoCKit will be unable to boot Linux from the SD card or other devices. Please
switch SW6 to another mode (e.g. MSEL[4:0] = 00001) to enable normal operations of Linux.
Figure 3-3 FPGA Configuration Mode Switch
Table 3-2 SW6 FPGA Configuration Mode Switch
Board Reference
Signal Name
Description
Default
SW6.1
MSEL0
Sets the Cyclone V MSEL[4:0] pins.
Use these pins to set the configuration
scheme and POR delay.
On
SW6.2
MSEL1
Off
SW6.3
MSEL2
On
SW6.4
MSEL3
On
SW6.5
MSEL4
Off
SW6.6
N/A
N/A
N/A
Table 3-3 MSEL pin Settings for each Scheme of Cyclone V Device
Configuration
Scheme
Compression Feature
Design Security
Feature
POR Delay
Valid MSEL[4:0]
FPPx8
Disabled
Disabled
Fast
10100
