User's Manual

LE920A4 HW User Guide Module Connections
Doc#: 1VV0301261 Pin-out
Rev. 4.3 Page 26 of 123 2017-12-07
PAD Signal I/O Function Type Comment
D1 EAR2_MT- AO Earphone signal output2, phase - Audio
C2 MIC2_MT+ AI Mic signal input2, phase + Audio
B1 MIC2_MT- AI Mic signal input2, phase - Audio
Digital Voice Interface (DVI)
D11 DVI_WA0 O Digital Voice interface (WA0
master output)
1.8V
C8 DVI_RX I Digital Voice interface (Rx) 1.8V
D9 DVI_TX O Digital Voice interface (Tx) 1.8V
C10 DVI_CLK O Digital Voice interface (CLK master
output)
1.8V
C12 REF_CLK O Reference clock for external
Codec
1.8V
General Purpose Digital I/O
F9 GPIO_01 I/O GPIO_01 1.8V Alternate Fn
I2C
E10 GPIO_02 I/O GPIO_02 1.8V Alternate Fn
I2C
F11 GPIO_03 I/O GPIO_03 1.8V Alternate Fn
I2C
E12 GPIO_04 I/O GPIO_04 1.8V Alternate Fn
I2C
F13 GPIO_05 I/O GPIO_05 1.8V
Alternate Fn
I2C
E14 GPIO_06 I/O GPIO_06 1.8V Alternate Fn
I2C
W19 GPIO_10 I/O GPIO_10 1.8V Alternate Fn
I2C
AN4 GPIO_20 I/O GPIO_20 1.8V
RF Section
AD1 Antenna I/O GSM/EDGE/UMTS/LTE main
antenna (50 Ohm)
RF
AU9 ANT_DIV I UMTS/LTE antenna diversity input
(50 Ohm)
RF