S i 8 9 0 x - P W R - E V B
4
Rev. 1.1
4. EVB Factory Jumper Configuration
Figure 3. EVB Default (Factory) Jumper Settings
Table 1. Factor Jumper Settings
Item
Function
Settings
Comments
J1
Master MCU debug connector
None
User can optionally modify Master MCU firmware
*
J2
ADC channel 1 analog input
5-6
Si8900 ADC channel AIN1 measures ac line voltage
J3
3.3 V bias voltage
5-6
3.3 V bias voltage connected to Si8900
J4
ADC channel 0 analog input
5-6
Si8900 ADC channel AIN0 measures ac line voltage
J5
ADC channel 2 analog input
No Jumper Not Used
J6
Master MCU RESET input
No Jumper Adding a jumper disables master MCU, customer
master uses serial ports
J7
Output connector P1 pin D0
assignments
1-2
Si8900 UART Rx input assigned to P1 pin D0
J8
Output connector P1 pin D1
assignments
1-2
Si8900 UART Tx output assigned to P1 pin D1
J11
110 Vac or 220 Vac line voltage
select
No Jumper 110 Vac line voltage selected
J12
3.3 V bias voltage
1-2
3.3 V bias voltage generated from ac line
(no jumper = VDD coming from TB-1, pin 4)
J24
For future use
1-2
For future use
*Note:
Requires C8051F005 MCU Development Kit
C8051F007
Debug
Connector
TB1
J24
J8
J6
J12
J5
J4
J3
J2
J11
Si8900
Si8901
Si8902
J1
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
1
2
1
2
1
2
P1
J
J
J
J
J
J
J7
1
2
3
4
5
6
J
U5
U3
U4
