LinkIt 2523 HDK v11 User's Guide
© 2015 - 2016 MediaTek Inc.
Page 17 of 82
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Jumpers
Purpose
Features
Type
DVDD_GPO cluster
power source
I/O voltage 1.8V
•
VIO28 for
DVDD_GPO
cluster
I/O voltage 2.8V
J1110
Power path selection for
DVDD18_VIO18 cluster
power source
•
VIO18 for
DVDD18_VIO18
cluster I/O voltage 1.8V
•
VIO28 for
DVDD18_VIO18
cluster I/O voltage 2.8V
Power selection, see
J1111
Power path selection for
DVDD_VMC cluster
power source
•
VIO18 for
DVDD_VMC
cluster
IO voltage 1.8V
•
VIO28 for
DVDD_VMC
cluster
IO voltage 2.8V
Power selection, see
J1112
Power path selection for
serial flash power source
•
VSF for internal serial flash
power source
•
VIO18 for internal serial
flash power source
Power selection, see
J1113
Power path for PSRAM
power source (Jumper
type)
•
VIO18 for PSRAM power
source
•
VSWXM for PSRAM power
source
Power selection, see
J1114
Power path for analog
I/O power source
•
VIO28 for analog IO power
source
•
VA28 for analog IO power
source
Power selection, see
J2001
Power path selection
•
VBAT for buck power supply
to system directly
•
VBAT_CONN for battery
power supply to system,
also including battery
charging
GPIO selection, see
J5001
External clock 26MHz
signal input support
•
Enable using VIO28
•
Disable using GND
GPIO selection, see
section 4.14, “Bluetooth
J5002
Bluetooth mode or BLE
mode selection
•
VBT for Bluetooth mode
and BLE modes
•
VIO18 for BLE mode only.
Power selection, see
section 4.14, “Bluetooth
J5003
RF signal path selection
by onboard antenna or
SMA connector
•
Select onboard antenna by
connecting pin 1 and pin 2.
•
Select SMA connector
antenna by connecting pin 2
and pin 3.
GPIO selection, see
section 4.14, “Bluetooth
J5004
Bluetooth mode
selection or external
buck cost reduction
•
VBT for both of Bluetooth
mode and BLE mode
•
VIO18 for external buck
LDO cost reduction
Power selection, see
section 4.14, “Bluetooth