Si1120-EK

2

Rev. 0.3

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

U1

D1

D6

D7

D5

D2

D3

D4

SILICONLABS

Si1120 EVB

P0.2

P0.3

J3

J4

J2

`

P3

CP

2103

U3

P2

J9

USB POWER

RESET

P1.6

P1.5

SW4

J17

IMEASURE

H2

SILICON LABS

www.silabs.com

H1

J6

VDD/DC+

J5

J7

J13

F930

U1

J14

J11

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