Si1120-EK
2
Rev. 0.1
3.2. Hardware Setup
1. Ensure the shorting blocks are configured for basic operation on both boards, as shown in Figure 1 and
Figure 2.
2. Connect the Si1120 EVB to the 96-pin connector on the C8051F930 TB.
3. Connect the USB Debug Adapter to the DEBUG connector on the C8051F930 TB with the 10-pin ribbon cable.
4. Connect one end of a USB cable to the USB connector on the USB Debug Adapter, and the other end to a USB
Port on the PC.
5. Verify that a shorting block is installed on J17 of the C8051F930 TB and that SW5 is in the ON position.
6. Connect the ac/dc power adapter to power jack P1 on the C8051F930 TB (Optional).
7. Connect one end of a USB cable to connector P3 on the C8051F930 TB, and the other end to a USB port on
the PC. Note that the CP210x VCP drivers should have been installed during the software setup described in
“3.1. Software Download and Installation” . If the drivers are installed correctly, a dialog box will pop up notifying
the user that a new USB device has been found.
Refer to Figure 3 for the full hardware connection diagram.
Figure 1. Si1120 Evaluation Board—Shorting Block Settings
Figure 2. C8051F930 Target Board—Shorting Block and Switch Settings
P1
J3
VTX0
VDD
B1
J4
J9
J1
VTX0
VTX0
J2
GN
D
MD
SC
PRX
ST
X
TXO
VDD
U1
D1
D6
D7
D5
D2
D3
D4
SILICON LABS
Si1120 EVB
P0.2
P0.3
J3
J4
J2
`
P3
CP
2103
U3
P2
DEBU
G
J9
USB POWER
RESET
P1.6
P1.5
PO
WER
O
F
F
BEF
OR
E
SW4
SW
IT
CH
IN
G
M
O
DE
2 C
E
L
L
1 C
E
LL
J17
IMEASURE
H2
SILICON LABS
www.silabs.com
H1
J6
VDD/DC+
J5
J7
J13
F930
U1
J14
J11
J10
VBAT
WALL_PWR
AAA_BAT
COIN_CELL
TOUCH SENSE SWITCH
P2.0
TOUCH SENSE SWITCH
P2.1
P1.4
J15
GND
J16
R15
J12
J8
+3VD
+1VD
VBAT
J1
SW5
ON
OFF
SW2
SW3
PORT2
PORT1
SW1
PORT0
C8051F930-TB
P1
