LinkIt 2523 HDK v11 User's Guide
© 2015 - 2016 MediaTek Inc.
Page 13 of 82
This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
4.2.3.
Powering on the eMMC or micro SD
The LinkIt 2523 HDK supports eMMC and micro SD card for storage. The HDK operates with either eMMC or micro
SD card (see Figure 10) enabled but not both at the same time.
4.2.4.
Powering on an active GPS antenna
The active GPS antenna on LinkIt 2523 HDK can be either software controlled or hardware activated. Table 3
provides details on how to determine if the antenna is activated by direct power supply or by software control.
Adjust the jumpers J5201 and J5202 to change the settings. The jumper locations are shown in Figure 10 and
Table 3. Enabling the active GPS antenna on HDK with jumper pin settings (illustrated)
Low noise amplifier
activation control
(should be synchronized
with J5202)
Set the jumper J5201 pins
with 0Ω resistor
to enable the active GPS
antenna using the power rail, as shown below.
Set the jumper J5201 pins
with 0Ω resistor
to enable the active GPS
antenna controlled by software settings, as shown below.
Active antenna power
supply (should be
synchronized with J5201)
Set the jumper J5202 pins
with 0Ω resistor
to supply power and enable
the active GPS antenna using the power rail, as shown below.
Set the jumper J5202 pins
with 0Ω resistor
to supply power and enable
the active GPS antenna controlled by software settings, as shown below.
1 2 3
1 2 3
1 2 3
1 2 3
