Quectel LTE OPEN EVB - Page 15

LTE Module Series
LTE OPEN EVB User Guide
LTE_OPEN_EVB_User_Guide 14 / 62
modules, then R0106 must be disconnected
Micro-B USB
Interface
J0601
USB device interface
Power Switch
S0301
VBAT ON/OFF control
PWRKEY
S0403
Power key (push button), used to turn on/off LTE-QuecOpen
modules
J0401
Jumper wire used to connect PWRKEY to GND
RESET
S0402
Reset button (push button), used to reset LTE-QuecOpen
modules
SDC1 Function
Switch
S0201
 Switched to left: connect the GPIO interface of J0203 to
the module’s SDC1 interface, for testing customers’ own
modules
 Switched to right: connect SDIO interface of FC20 and
AF20 modules to SDC1 interface of LTE-QuecOpen
modules
SDC2 Function
Switch
S0701
 Switched to left: connect SD card interface of EVB to
SDC2 interface of LTE-QuecOpen modules
 Switched to right: connect eMMC to SDC2 interface of
LTE-QuecOpen modules
PCM Function
Switch
S1001
 Switched to left: connect BT interface (PCM) of AF20 to
the PCM interface of AG35 module
 Switched to right: connect the codec board interface
(J0804) on EVB to the PCM interface of LTE-QuecOpen
modules
Switch
S0401
Reserved for internal testing. Switch it to down by default.
Audio Interfaces
J0804
Codec board interface
J0805
 Used for loudspeaker
 Used to test the analog audio function of LTE-QuecOpen
modules
J0802
 Used for earphone
 Used to test the analog audio function of LTE-QuecOpen
modules
J0801
(bottom side)
 Used for handset
 Used to test the analog audio function of LTE-QuecOpen
modules
U(SIM)
Interfaces
J0901
U(SIM) card connector 1
J0902
U(SIM) card connector 2 (Reserved)