User's Manual

LE920 Hardware User Guide
1vv0301026 Rev.8 2015-01-03
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Reserved. Page 27 of 88
The table below specifies the LE920A4 signals that must be connected even if not used by
end application:
PAD
Signal
Notes
AP17,AP19,AR18,AS17,AS19,AT18,AU17,AU19
VBATT &
VBATT_PA
A6,A12,B13,B15,B17,C4,C6,D3,D7,E18,F1,G18,H19,
M1,N2,P1,P3,R2,T2,T18,U1,V18,W1,X2,X18,Y1,Y19,
AA2,AB1,AC2,AE2,AF1,AG2,AH1,AJ2,AK1,AK17,
AL18,AM17,AM19,AN16,AN18,AP3,AP5,AP7,AP9,
AP11,AP13,AP15,AR2,AR4AR6,AR8,AR10,AR12,
AR14,AR16,AS5,AS7,AS9,AS11,AS13,AS15,AT4,
AT6,AT8,AT10,AT12,AT14,AT16,AU1,AU5,AU7,
AU11,AU15
GND
AS1
ON/OFF*
AN12
SHDN_N
D19
USB_D+
If not used should be connected to
a Test Point or an USB connector
F19
USB_D-
If not used should be connected to
a Test Point or an USB connector
A18
USB_VBUS
If not used should be connected to
a Test Point or an USB connector
AH19
C103/TXD
If not used should be connected to
a Test Point
AF19
C104/RXD
If not used should be connected to
a Test Point
AA18
C105/RTS
If the flow control is not used it
should be connected to GND
AK19
C106/CTS
If not used should be connected to
a Test Point
AB19
TXD_AUX
If not used should be connected to
a Test Point
AD19
RXD_AUX
If not used should be connected to
a Test Point
AD1
Antenna
AU9
ANT_DIV
S1
ANT_GPS
G2, J2, L2, F3, H3, K3, E4, AN14
Reserved
If not used should be connected to
a Test Point