
Tinyboards
maximum
performance
at
minimum
size
Blackfin
DEV
‐
BF548
‐
Lite
&
DEV
‐
BF548DA
‐
Lite
Hardware
User
Manual
Page
16
5 Switches, Jumper and LED Description
5.1 S1 – Reset switch
Performs system reset.
5.2 S2 – Ethernet Control Signals / SDCARD CS
Default Settings
Dipswitch
Function
S2.1
Connect
SDCARD
CS
to
PC5
S2.2
Connect
nAMS1
from
Core
Module
to
Ethernet
chip
S2.3
Connect
PE6
from
Core
Module
to
Ethernet
chip
IRQ
S2.4
Connect
PME
of
Ethernet
chip
to
test
point
PME1
5-1 DIP switch S2
S3 – UART Switch
Move S3 to position 1 to route the Core Modules RX0 and TX0 signals to USB
Move S3 to position 0 to route the Core Modules RX1 and TX1 signals to USB
5.3 S4 – Boot Configuration
S4.1 to S4.4 Control the boot mode and are described in chapter 6 Boot Mode Description.
Dipswitch
Function
S4.1
Bootmode
0
S4.2
Bootmode
1
S4.3
Bootmode
2
S4.4
Bootmode
3
S4.5
Power
Supply
for
CAN0
Driver
IC
S4.6
Power
Supply
for
CAN1
Driver
IC
S4.7
Connect
TXD
‐
USB
to
VCC
S4.8
Connect
S5
to
VCC
5-2 DIP switch S4
5.4 JP1 – Ethernet Speed Selection
Set jumper JP1 to select Ethernet Speed 10MBit/s and unset JP1 for 100Mbit/s.
5.5 JP2 -– Power Supply Jumper
This jumper can be removed in order to insert an AMPERE METER for current
measurement: