MT7682 HDK V11 User's Guide
© 2017 Airoha Technology Corp.
Page 12 of 28
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Figure 6. Power up the HDK using two AA or AAA Battery (J2001)
Table 2. System power input from AA or AAA battery jumpers
Jumper
Usage
Comments
J2002(2-3)
3.3V power supply
Use AA or AAA battery source
supporting 3.3V power.
J2004
Current measurement
Measures the current flow in MT7682.
J2003(2-3)
AVD33_VRTC power supply
Use AA or AAA battery source
supporting RTC 3V3 power.
J2007
Current measurement in RTC mode
Measures the current flow in RTC
mode for MT7682.
J2009
Enables booster
Connects MT7682 EXT_PWR_EN (pin
17) to booster enabling pin
4.3.
LEDs
The MT7682 HDK has onboard LEDs associated with different functionalities of the board (Figure 7).
1)
D2002
indicates the power rail 5V is on.
2)
D2001
indicates the power rail 3.3V is on.
3)
Blinking
LED3001
indicates communication between MK20 UART and MT7682 UART0.
4)
D1
,
D2
,
D3
,
D4
, and
D5
are LEDs assigned for user interaction. All LEDs are high active (Figure 7).
