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Siemens MC45 User Manual
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Siemens Cellular Engine
Hardware
Interface
Description
Version 00.02
DocID: MC45_HD_01_V00.02a
2
Table of Contents
Default Chapter
3
Table of Contents
3
Version History
7
1 Introduction
9
Related Documents
9
Terms and Abbreviations
10
Type Approval
13
Safety Precautions
15
2 Product Concept
17
MC45 Key Features at a Glance
18
Table 1: MC45 Key Features
18
Table 2: Coding Schemes and Maximum Net Data Rates over Air Interface
20
Circuit Concept
21
Figure 1: MC45 Block Diagram
21
3 Application Interface
22
Operating Modes
23
Table 3: Overview of Operating Modes
23
Power Supply
25
Power Supply Pins on the Board-To-Board Connector
25
Table 4: Power Supply Pins of Board-To-Board Connector
25
Minimizing Power Losses
26
Figure 2: Power Supply Limits During Transmit Burst
26
Charging Control
27
Figure 3: Schematic of Approved Charging Transistor, Trickle Charging and ESD Protection
27
Table 5: Bill of Material for External Charging Circuit
27
Battery Pack Characteristics
28
Figure 4: Battery Pack Circuit Diagram
28
Recommended Battery Pack
29
Table 6: Specifications of XWODA Battery Pack
29
Figure 5: Charging Process
30
Implemented Charging Technique
30
Operating Modes During Charging
31
Table 7: Comparison Charge-Only and Charge Mode
31
Charger Requirements
32
Table 8: at Commands Available in Charge-Only Mode
32
Power up / down Scenarios
33
Turn on MC45
33
Turn on MC45 Using the Ignition Line /IGT (Power On)
33
Figure 6: Power-On by Ignition Signal
33
Timing of the Ignition Process
34
Figure 7: Timing of Power-On Process if VDDLP Is Not Used
34
Figure 8: Timing of Power-On Process if VDDLP Is Fed from External Source
34
Turn on MC45 Using the POWER Signal
35
Turn on MC45 Using the RTC (Alarm Mode)
35
Table 9: at Commands Available in Alarm Mode
35
Power Saving
36
No Power Saving (AT+CFUN=1)
36
NON-CYCLIC SLEEP Mode (AT+CFUN=0)
36
CYCLIC SLEEP Mode (AT+CFUN=5, 6, 7 and 8)
36
Timing of the /CTS Signal in CYCLIC SLEEP Modes
37
Figure 9: Timing of /CTS Signal (Example for a 2.12 S Paging Cycle)
37
Figure 10: Beginning of Power Saving if CFUN=5
38
Wake up MC45 from SLEEP Mode
39
Table 10: Wake-Up Events in NON-CYCLIC and CYCLIC SLEEP Modes
39
Turn off MC45
40
Turn off MC45 Using at Command
40
Emergency Shutdown Using /EMERGOFF Pin
41
Figure 11: Deactivating GSM Engine by /EMERGOFF Signal
41
Automatic Shutdown
42
Temperature Dependent Shutdown
42
Undervoltage Shutdown if Battery NTC Is Present
43
Undervoltage Shutdown if no Battery NTC Is Present
43
Table 11: Temperature Dependent Behaviour
43
Shutdown in the Event of Overvoltage
44
Summary of State Transitions
45
Table 12: State Transitions of MC45
45
RTC Backup
46
Figure 12: RTC Supply from Capacitor
46
Figure 13: RTC Supply from Rechargeable Battery
46
Figure 14: RTC Supply from Non-Chargeable Battery
46
Serial Interfaces
47
Figure 15: RS-232 Interfaces
47
Audio Interfaces
49
Figure 16: Audio Block Diagram
49
Figure 17: Schematic of Microphone Inputs
50
Microphone Circuit
50
DAI Timing
51
Speech Processing
51
Figure 18: DAI Timing on Transmit Path
52
Figure 19: DAI Timing on Receive Path
52
SIM Interface
53
Table 13: Signals of the SIM Interface (Board-To-Board Connector)
53
Requirements for Using the CCIN Pin
54
Design Considerations for SIM Card Holder
55
Figure 20: SIM Card Holder of DSB45 Support Box
55
Table 14 : Pin Assignment of Molex SIM Card Holder on DSB45 Support Box
55
Figure 21: Connecting a Separate Ground for SIM Interface
56
Grounding the SIM Interface
56
Control Signals
57
Inputs
57
Table 15: Input Control Signals of the MC45 Module
57
Outputs
58
Synchronization Signal
58
Figure 22: SYNC Signal During Transmit Burst
58
Table 16: MC45 Synchronization Signal (if SYNC Pin Is Set to Mode 0 Via AT^SSYNC)
58
Using the SYNC Pin to Control a Status LED
59
Figure 23: LED Circuit (Example)
59
Table 17: Coding of the Status LED
59
Behaviour of the /RING0 Line (RS-232(0) Interface Only)
60
Figure 24: Incoming Voice Call
60
Figure 25: Incoming Data Call
60
Table 18: MC45 Ring Signal
60
Electrical Specifications of the Application Interface
61
Figure 26: Pin Assignment (Top View on MC45)
61
Table 19: Pin Assignment and Electrical Description of Application Interface
62
4 Antenna Interface (Antenna Reference Point - ARP)
65
Table 20: Return Loss
65
5 Physical Characteristics
66
Mechanical Dimensions of MC45
66
Figure 27: MC45 - Top View
66
Figure 28: Mechanical Dimensions of MC45
67
Figure 29: MC45 Bottom View
68
Mounting MC45 Onto the Application Platform
69
Board-To-Board Connector
70
Figure 30: Hirose DF12C Receptacle on MC45
70
Figure 31: Header Hirose DF12 Series
70
Table 21: Ordering Information DF12 Series
70
Table 22: Electrical and Mechanical Characteristics of the Hirose DF12C Connector
70
Adapter Cabling
71
Figure 32: Mechanical Dimensions of Hirose DF12 Connector
71
Mechanical Dimensions of the Hirose DF12 Connector
71
Antenna Design
72
Hirose Antenna Connector
72
Figure 33: Mechanical Dimensions of U.FL-R-SMT Connector
72
Table 23: Product Specifications of U.FL-R-SMT Connector
72
Figure 34: U.FL-R-SMT Connector with U.FL-LP-040 Plug
73
Figure 35: U.FL-R-SMT Connector with U.FL-LP-066 Plug
73
Table 24: Material and Finish of U.FL-R-SMT Connector and Recommended Plugs
73
Figure 36: Specifications of U.FL-LP-(V)-040(01) Plug
74
Antenna Pad
75
Figure 37: Restricted Area Around Antenna Pad
75
Table 25: Ordering Information for Hirose U.FL Series
75
6 Electrical, Reliability and Radio Characteristics
76
Absolute Maximum Ratings
76
Operating Temperatures
76
Table 26: Absolute Maximum Ratings
76
Table 27: Operating Temperatures
76
Reliability Characteristics
77
Table 28: Summary of Reliability Test Conditions
77
Power Supply Ratings
78
Table 29: Power Supply Ratings
78
Current Consumption During Transmit Burst
79
Figure 38: Typical Current Consumption Vs. Power Level
79
Figure 39: Typical Current Consumption Vs. Return Loss
80
Electrical Characteristics of the Voiceband Part
81
Setting Audio Parameters by at Commands
81
Table 30: Audio Parameters Adjustable by at Command
81
Audio Programming Model
82
Figure 40: at Audio Programming Model
82
Characteristics of Audio Modes
83
Table 31: Voiceband Characteristics (Typical), All Values Preliminary
83
Voiceband Receive Path
84
Table 32: Voiceband Receive Path
84
Voiceband Transmit Path
85
Table 33: Voiceband Transmit Path
85
Air Interface
86
Table 34: Air Interface
86
Electrostatic Discharge
87
Table 35: Measured Electrostatic Values
87
7 Reference Approval
88
Reference Equipment
88
Figure 41: Reference Equipment for Approval
88
8 List of Parts and Accessories
89
Table 36: List of Parts and Accessories
89
Table 37: Molex Sales Contacts (Subject to Change)
90
Table 38: Hirose Sales Contacts (Subject to Change)
90
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Siemens MC45 Specifications
General
Technology
GSM
SIM
Mini-SIM
Call records
10 dialed, 10 received, 10 missed calls
3.5mm jack
No
Games
Yes
2G bands
GSM 900 / 1800
Alert types
Vibration
Messaging
SMS
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