Samsung 710 User Manual page 22

Through selection of the Jumpers J20 and J21 you can choose the IO power source (I
source of either, 1.8V, 3.3V or 5V. Figure 21 shows how to set the various jumpers to switch between power sources.
Description Power Source
DCDC_5V_1
I2C, UART, GPIO VDDEXT_33_OFF
VDDEXT_18_OFF
DC5V
XAGPIO VDD_EXT3P3_ALIVE
VDD_EXT1P8_ALIVE
Pin Name Pin Number
NC 37
GND 39
Pin Name Pin Number
GND 1
GND 3
GND 5
GND 7
9
DC5V
11
13
VBAT_MAIN
15
17
AP_VDDIO
19
21
VDD_EXT1P8_ALIVE
23
25
VDD_EXT1P8
27
29
VDD_EXT3P3_ALIVE
31
33
VDD_EXT3P3
35
37
VDD_EXT5P0_1
39
Default Value
Place Jumper J20:[1-2]
̶
Place Jumper J20:[3-4]

Place Jumper J20:[5-6]
̶
Place Jumper J21:[1-2]
̶
Place Jumper J21:[3-4]

Place Jumper J21:[5-6]
̶
Pin Number Pin Name
38 GND
40 XADC0
Pin Number Pin Name
2 MICOM_GPIO1
4 MICOM_GPIO2
6 MICOM_GPIO3
8 MICOM_GPIO4
10 MICOM_GPIO5
12 MICOM_GPIO6
14 MICOM_GPIO7
16 MICOM_GPIO8
18 MICOM_GPIO9
20 MICOM_GPIO10
22 MICOM_GPIO11
24 MICOM_GPIO12
26 MICOM_GPIO13
28 MICOM_GPIO14
30 GND
32 GND
34 GND
36 GND
38 GND
40 GND
2
C, UART, GPIO) or the XAGPIO power
Connect
22