Iridium 9523 - Page 21

Iridium Communications, Inc. Information Contained in this Guide
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice
Revision 2.6
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Only
Pin
No.
Signal Name
Signal
direction
(WRT
modem)
Signal function Signal group
2 CODEC_PCMIN Out Data from modem PCM audio port 1
3 CODEC_PCMSYNC Out Frame Sync PCM audio port 1
4 CODEC_PCMOUT In Data to modem PCM audio port 1
5 0V Ground Power supply
6 0V Ground Power supply
7 UC_DACLK Out Clock PCM audio port 2
8 UC_DATX Out Data from modem PCM audio port 2
9 UC_DAFS Out Frame Sync PCM audio port 2
10 UC_DARX In Data to modem PCM audio port 2
11 0V Ground Power supply
12 0V Ground Power supply
13 DPL_RXD In Data to modem DPL port
14 DPL_TXD Out Data from modem DPL port
15 DF_RX Out Data from modem Data/Fax port
16 DF_TX In Data to modem Data/Fax port
17 DF_CTS Out Clear to Send Data/Fax port
18 DF_DCD Out Carrier Detect Data/Fax port
19 DF_DSR Out Data Set Ready Data/Fax port
20 DF_RI Out Ringing Indication Data/Fax port
21 DF_RTS In Request to Send Data/Fax port
22 DF_DTR In Data Terminal Ready Data/Fax port
23 SIM_1V8_3V Out Voltage select SIM
24 SIM_CLOCK Out Clock SIM
25 SIM_ENABLE Out Enable SIM
26 SIM_RESET Out Reset SIM
27 SIM_DATA_IO Bidir Data SIM
28 FULL_POWER_EN In Enable full RF power GPIO
29 ANT_DET_PWR Out Power for docking cradle detector GPIO
30 LBT_HSTB In Handset/LBT switch GPIO
31 TX_ACTIVE Out Signal to mute GPS receiver GPIO
32 TRX_ON In Enable modem power regulators Power supply
33 PA_BOOST_EN Out Enable boost converter Power supply
34 0V Ground Power supply
35 0V Ground Power supply
36 VBAT In Battery Voltage Power supply
37 VBOOST In Boost Voltage for PA Power supply
38 VBAT In Battery Voltage Power supply
39 VBOOST In Boost Voltage for PA Power supply
40 VBAT In Battery Voltage Power supply
Table 7: Limits for 3.3V Digital Signals
Parameter Symbol Min Max Unit
Input High Voltage V
IH
2.0 5.5 V
Input Low Voltage V
IL
-0.3 0.8 V
Input current I
IN
20 µA
Input capacitance C
IN
10 pF
Output High Voltage V
OH
2.4 V