Multitech MT5600SMI-32 Specifiche Pagina 72
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Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342I) 72
Microphone and Speaker
Microphone Input Option
Note: Applies to the MT5656SMI Voice only.
Speaker Output Option 1
Speaker Output Option 2
Specifications for the Microphone Input
Impedance
>70K ohms
AC Input Voltage Range
1.1V P-P
Reference Voltage
1.35V
Specifications for the Speaker Output from the Codec
Minimum Load
300 Ω
Maximum Capacitive Load
0.01 uF
Output Impedance
10 Ω
AC Output Voltage Range
1.4V P-P
Reference voltage
+1.35 VDC
DC Offset Voltage
± 20 mV
Speaker Output
The speaker output from the codec is coupled to the speaker pin (64) through a 1uF cap and a 33 ohm resistor. The
speaker pin is shared with the call progress monitor which is a digital I/O pin on the DSP that is coupled to the
speaker pin through a 1uF and 3.9K.
- Table of Contents 5
- Chapter 1 10
- Chapter 1 – Universal Socket 11
- Connectivity 11
- AT Commands 12
- Fax Commands 12
- Bluetooth 13
- Universal Pin Descriptions 14
- Design Considerations 17
- SocketModem Developer Board 20
- Board Components 21
- Developer Board Schematics 23
- Recommended Parts 28
- Antenna System 29
- RF Specifications 29
- Coax Cable 29
- Connector 29
- Antenna 30
- Safety Notices and Warnings 31
- Vehicle Safety 32
- Maintenance of Your Modem 32
- Your Responsibility 32
- Upgrading Firmware 33
- XMODEM Serial Port Upgrade 34
- Programming the Modem 35
- Other Programming Concerns 36
- Extended Address Record 37
- End of File Record 37
- Requirements 39
- Labeling Requirements 42
- FCC Part 15 Regulation 45
- South African Statement 46
- WEEE Directive 47
- Multi-Tech Systems, Inc 48
- Certificate of Compliance 48
- Standards 49
- Standards (in Chinese) 50
- U.S.A. and Canada) 51
- Chapter 2 53
- & MT5656SMI) 54
- Parallel Configuration 58
- Overview 61
- (Addr = 1, DLAB = 0) 63
- FCR – FIFO Control Register 64
- LCR – Line Control Register 66
- (Addr = 4) 67
- LSR – Line Status Register 68
- MSR – Modem Status Register 69
- SCR – Scratch Register 70
- Divisor Registers 70
- Microphone and Speaker 72
- Chapter 3 73
- Introduction 74
- Product Ordering Information 74
- Parallel Timing Requirements 80
- Time Out Interrupts 82
- IER – Interrupt Enable 84
- FCR – FIFO Control 85
- LCR – Line Control 85
- MCR – Modem Control 85
- LSR – Line Status 86
- MSR – Modem Status 86
- SCR – Scratch 87
- DLL – Divisor Latch (LSByte) 87
- DLM – Divisor Latch (MSByte) 87
- Chapter 4 89
- Chapter 5 94
- Chapter 5 – SocketModem 95
- (MT2456SMI-22) 95
- Applications Notes 99
- Chapter 6 100
- Chapter 6 – SocketModem IP 101
- (MT5656SMI-IP) 101
- Technical Specifications 102
- SocketModem Configuration 104
- Electrical Characteristics 105
- Application Notes 106
- Chapter 7 107
- (MT100SEM) 108
- Chapter 8 113
- Chapter 8 – SocketModem GPRS 114
- Consumption 120
- Chapter 9 122
- Chapter 9 – SocketModem CDMA 123
- (MTSMC-C) 123
- Mechanical Dimensions 125
- CDMA Power Consumption 126
- SocketModem CDMA 128
- Provisioning Terminology 128
- Chapter 10 131
- (MTSMC-E) 132
- Physical Dimensions 134
- Pin Configurations 135
- EDGE Power Consumption 136
- Chapter 11 138
- Chapter 11 – SocketModem 139
- (MTSMC-H) 139
- Category Description 141
- Configurations 143
- HSPDA Power Consumption 144
- Air Interface 146
- Operating Modes 149
- Automatic Shutdown 150
- Power Saving 150
- USB Interface 152
- Chapter 12 153
- (MT800SWM) 154
- Integrators 159
- MTS2BTSMI 160
- (MTS2BTSMI) 161
- Other Examples 166
- Antenna Requirements 167
- Antenna Source 167
- Antenna Cable and Connector 167
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