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PRODUCT USER GUIDE
Table 1 Jumper settings for system power input through USB connection
Jumper
Usage
J1
External 5V power supply
DC-5V transfer to DC-3V3 current
J2
source
J3
Current measurement (3V3)
J4
3V3 for EEPROM power
J5
3V3 for external components
J25
AVDD33_VRTC battery power supply
J26
Current measurement in RTC mode
J27
3V3 for SD_CARD power
Switch VCCIO_L to 3V3 power domain
JP1
or 1V8 power domain
Switch VCCIO to 3V3 power domain or
JP2
1V8 power domain
Switch 1V8 VCCIO from internal
JP3
PHYLDO or external LDO
Switch RTC 3V3 from DC-3V3 or
JP5
AVDD33_VRTC
Switch SD Card to 3V3 power domain
JP7
or 1V8 power domain
Switch EEPROM(NC) to 3V3 power
JP9
domain or 1V8 power domain
J88
5V for (U10) Audio AMP power
J89
5V for (U10) Audio AMP using
www.acsip.com.tw
Comments
Use external power source to supply 5V voltage to EK-AI7933CLD
PCB. Pin 1 is 5V source. Pin2 is GND.
Measures the current flow in AI7933CLD module.
EEPROM has no parts.
Use AA or AAA battery for RTC 3V3 power. Pin1 is positive
endpoint, Pin2 is GND.
Measures the current flow in RTC mode for EK-AI7933CLD.
Select pin 1 & 2, means VCCIO_L use 3V3 power domain
Select pin 2 & 3, means VCCIO_L use 1V8 power domain
Select pin 1 & 2, means VCCIO use 3V3 power domain
Select pin 2 & 3, means VCCIO use 1V8 power domain
Caution: The flash of AI7933CLD default using 3V3 power domain,
if you want to change VCCIO to 1V8 power domain please rework
flash to 1V8 power domain flash (eq. W25Q128JWPIQ)
Select pin 2 & 3, means 1V8 VCCIO from internal PHYLDO
Select pin 1 & 2, means 1V8 VCCIO from external Buck
component
Select pin 1 & 2, means RTC_3V3 use DC-3V3
Select pin 2 & 3, means RTC_3V3 use AVDD33_VRTC
Select pin 1 & 2, means SD_CARD power use 1V8 power domain
Select pin 2 & 3, means SD_CARD power use 3V3 power domain
Select pin 1 & 2, means EEPROM power use 3V3 power domain
Select pin 2 & 3, means EEPROM power use 1V8 power domain
Pin 1 is EXUSB_5V
Pin 1 is EXUSB_5V
Product Name
Version
Doc No
Date
Page
EK-AI7933CLD
E
912-13903
2022/11/14
11 /33
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