User's Manual

Neo_N703 WCDMA ModuleDemo Board User Guide
Copyright © Neoway Technology Co., Ltd
3
38 PWRKEY DI ON/OFF control
1.2V
<V
IH
<
2.1V
Low level
UART Interface
9 UART_RXD DI UART data receive
-0.3V<V
IL
<0.6
1.2V<V
IH
<2.1V
Data communication
10 UART_TXD DO UART data transmit
1.35V<V
OL
<1.8V
0<V
OH
<0.45V
UIMInterfaces
22 VUIM P
UIM power supply
output
Compatible with
1.8/2.85 V UIM card
23 UIM_RESET DO UIMreset
-0.3V<VIL<0.35*VUIM
0.65*VUIM<VIH<VUIM
+0.3V
VUIM
-0.45<VOH<VUIM
0<VOL<0.45V
24 UIM_DATA DI/O UIMdata I/O
25 UIM_CLK DO UIMclock output
26
UIM_DETECT
DI UIM detect
-0.3V<VIL<0.6
1.2V<VIH<2.1V
Audio Interfaces
47 REC_N AO
Negative electrode of
receiver output
Class AB differential
receiver amplifier
48 REC_P AO
Positive electrode of
receiver output
49 SPK_OUT_P AO
Positive electrode of
speakeroutput
Class Ddifferential
speaker amplifier
50 SPK_OUT_N AO
Negative electrode of
speakeroutput
51 MIC2_N AI
Negative electrode of
differential MIC
input
MIC bias embedded
52 MIC2_P AI
Positive electrode of
differential MIC
input
53 MIC1_N AI
Negative electrode of
differential MIC
input
54 MIC1_P AI
Positive electrode of
differential MIC
input
USB Interfaces
34 USB_DM DI/O
USB data negative
signal
USB2.0, used for
firmware download and