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Si1120-EK
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
2
D5
D6
R15
J16
P1.4
J15
TOUCH SENSE SWITCH
GND
P2.0
J4
SILICON LABS
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PORT2
C8051F930-TB
P1
J7
PORT1
J3
J6 VDD/DC+
J5
H1
Rev. 0.3
J2
D7
D1
J4
J9
U1
VTX0
D2
SILICON LABS
VTX0
Si1120 EVB
J1
B1
J3
D3
VDD
VTX0
D4
P1.6
P0.2
P0.3
SW2
P1.5
USB POWER
TOUCH SENSE SWITCH
P2.1
CP
2103
U3
J8
J12
U1
+1VD
F930
J11
COIN_CELL
VBAT
AAA_BAT
J13
WALL_PWR
SW1
J14
+3VD
RESET
PORT0
IMEASURE
`
J2
J17
H2
VBAT
OFF
ON
J1
P2
SW5
P1
SW3
P3
J9
SW4
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