User's Manual

HE920 Hardware User Guide
1vv0301014 Rev.9 – 2014-01-23
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 17 of 84
PAD
Signal
I/O
Function
Type
COMMENT
C8
DVI_RX
I/O
Digital Voice interface (RX)
1.8V
D9
DVI_TX
I/O
Digital Voice interface (TX)
1.8V
C10
DVI_CLK
I/O
Digital Voice interface (CLK)
1.8V
Digital IO
F9
GPIO_01
I/O
GPIO_01
1.8V
E10
GPIO_02
I/O
GPIO_02
1.8V
F11
GPIO_03
I/O
GPIO_03
1.8V
E12
GPIO_04
I/O
GPIO_04
1.8V
F13
GPIO_05
I/O
GPIO_05
1.8V
E14
GPIO_06
I/O
GPIO_06 / DAC_OUT(PDM)
1.8V
R18
GPIO_07
I/O
GPIO_07
1.8V
S19
GPIO_08
I/O
GPIO_08
1.8V
U19
GPIO_09
I/O
GPIO_09
1.8V
W19
GPIO_10
I/O
GPIO_10
1.8V
RF Section
AD1
Antenna
I/O
GSM/EDGE/UMTS Antenna (50Ohm)
RF
AU9
ANT_DIV
I
UMTS Antenna Diversity Input (50Ohm)
RF
GPS Section
S1
ANT_GPS
I
GPS Antenna (50Ohm)
RF
V2
GPS_LNA_EN
O
Output enable for External LNA supply
1.8V
Miscellaneous Function
AP1
RESET*
I
Reset Input
1.8V
Active Low
AS1
ON_OFF*
I
Input Command for Power ON/OFF
1.8V
Active Low
F17
VRTC
AI
VRTC Backup Capacitor
Power
To be used to
back up the
RTC section
P17
VAUX/PWRMON
O
Supply Output for External Accessories / Power ON
Monitor
1.8V
D5
ADC_IN1
AI
Analog/Digital Converter Input 1
Analog
E6
ADC_IN2
AI
Analog/Digital Converter Input 2
Analog
AU3
STAT_LED
O
Status Indicator LED
1.8V
AN10
SW_RDY
O
Indicates that the boot sequence completed successfully
1.8V
AN12
SHDN*
I
Unconditional Shut down Input
1.8V
M17
LED_DRV_EN
O
Enable for the external LED Driver circuit
1.8V
Power Supply
AP17
VBATT
-
Main Power Supply (Baseband)
Power
AP19
VBATT
-
Main Power Supply (Baseband)
Power
AR18
VBATT
-
Main Power Supply (Baseband)
Power
AS17
VBATT_PA
-
Main Power Supply (PAM)
Power
AS19
VBATT_PA
-
Main Power Supply (PAM)
Power
AT18
VBATT_PA
-
Main Power Supply (PAM)
Power