Quectel UC20 User Manual page 27

3 VDD_EXT
4 PCM_IN
5 I2C_SDA
6 PCM_OUT
7 I2C_SCL
8 PCM_CLK
9 CLK_OUT
10 GND
J806 Pin Pin Name
1 RTS_1.8V
2 DCD_1.8V
3 CTS_1.8V
4 RI_1.8V
5 RXD_1.8V
6 TXD_1.8V
7 DTR_1.8V
8 AP_READY
9 GND
10 GND
J807 Pin Pin Name
1 GND
2 GND
3 GND
4 DCD_3.0V
5 RI_3.0V
UMTS&LTE_EVB_User_Guide
UMTS/HSPA/LTE Module Series
Connected directly to module's VDD_EXT
Connected directly to module's PCM_IN
Connected directly to module's I2C_SDA
Connected directly to module's PCM_OUT
Connected directly to module's I2C_SCL
Connected directly to module's PCM_CLK
RESERVED
GND
Description
Connected directly to module's RTS
Connected directly to module's DCD
Connected directly to module's CTS
Connected directly to module's RI
Connected directly to module's RXD
Connected directly to module's TXD
Connected directly to module's DTR
Connected directly to module's AP_READY
GND
GND
Description
GND
GND
GND
3.0V DCD signal
3.0V RI signal
Confidential / Released
UMTS&LTE EVB User Guide
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