Sierra Wireless Writing an embedded application loader Dokumentacja Pobierz pdf (Strona 39)

Electrical Specifications

Rev 8 Apr.14 Proprietary and Confidential - Contents subject to change 39

Antenna control

Note: Antenna control

signals support is optional.

The MC7304 Mini Card provides three output signals that may be used for host

designs that incorporate tunable antennas. For details, see [2] AirPrime MiniCard

MC73xx/MC8805 AT Command Reference (Doc# 4114486).

Table 3-9: Antenna control signals

Name Pin Description

ANT_CTRL0 3 Customer-defined external switch control for

tunable antennas

ANT_CTRL1 5

ANT_CTRL2 44

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 109 110

AirPrime MC7304 1
AM to 5:00 PM Pacific Time 4
Contents 7
List of Tables 11
List of Figures 13
1: Introduction 15
LTE features 17
Modem features 17
Position location (GNSS) 18
Warranty and support 18
Supporting documents 18
Accessories 19
Required connectors 19
Ordering information 19
Integration requirements 20
2: Standards Compliance 21
3: Electrical Specifications 23
Electrical Specifications 27
(Continued) 27
Power supply 30
USB interface 30
User-developed drivers 31
AirPrime 32
SIM card connector 32
SIM implementation 33
Control interface (Signals) 34
WAN_LED_N—LED output 35
SYSTEM_RESET_N—Reset Input 36
PCM/I2S Audio Interface 36
Figure 3-8: PCM_SYNC timing 37
1. Bit clock: 1536 KHz (±10%) 38
Antenna control 39
4: RF Specifications 41
Antenna and cabling 42
Ground connection 43
Interference and sensitivity 43
Sensitivity vs. frequency 45
1. Per 3GPP specification 47
 1dB Connectorized (Class 3) 48
GNSS specifications 49
5: Power 51
Module power states 53
Power state transitions 54
Power interface 55
Transmit power waveform (GSM) 56
Power supply noise 57
SED (Smart Error Detection) 57
Tx power control 57
6: Software Interface 59
Device views 62
Labeling 63
Electrostatic discharge (ESD) 64
Module integration testing 65
Certifications 67
A: Antenna Specification 69
Recommended GNSS antenna 71
Antenna tests 72
B: Design Checklist 73
C: Testing 75
Acceptance test requirements 76
Acceptance test procedure 76
Production testing 77
Functional production test 77
Production test procedure 78
+CPIN or +CIMI 79
LTE RF receive path test 84
GNSS RF receive path test 86
Suggested testing equipment 87
Wireless 87
IOT/Operator testing 87
D: Packaging 91
Command documents 93
Other Sierra documents 93
Industry/other documents 93
F: Technology Overview 95
DC-HSPA+ 96
GPRS / EGPRS 96
G: Acronyms 99
Wide Area Network 104
Wireless Local Area Network 104
Zero Intermediate Frequency 104
Numerics 105

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