Multitech MT5600SMI Specifications download pdf (Page 84)

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Chapter 4 – SocketModem (MT2456SMI-22)

Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342C) 84

Electrical Characteristics

3.3 V and 5 V Serial SocketModem

3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V

5 V DC Characteristics (TA = 0°C to 50°C; VDD = 5 V ± 0.25 V)

VDDMAX = 5.25 V

Inputs Input High Input Low

–DTR (40), –TXD (35), –RTS (33), –RESET (24) Min 2.0 V Max 0.8 V

Outputs Output High Output Low

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

2mA, Z

INT

= 120 Ω

Min 2.4 V Max 0.4 V

Digital Input Capacitance

50pF

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 137 138

Universal Socket 1
Connectivity 1
Table of Contents 3
Chapter 1 7
Chapter 1 - Universal Socket 8
Commands 9
Universal Pin Descriptions 10
Design Considerations 13
Maximum Component Height 16
SocketModem Developer Board 17
Telecom Approvals 24
Label Examples 27
Industry Canada 28
South African Statement 29
Flash Upgrade 30
Serial Port Upgrade 31
Ethernet Port Upgrade 32
Programming the Modem 33
Other Programming Concerns 34
Wireless Account Activation 36
Replacement Parts 39
Chapter 2 40
Chapter 2 – SocketModem 41
(MT5600SMI & MT5656SMI) 41
Developer Kit 42
Parallel Configuration 45
Current Modems 46
Overview 49
FCR – FIFO Control Register 52
LCR – Line Control Register 54
LSR – Line Status Register 56
MSR – Modem Status Register 57
SCR – Scratch Register 58
Divisor Registers 58
Microphone and Speaker 60
Recommended Parts 61
Chapter 3 62
Chapter 3 – SocketModem 63
Timing Requirements 69
Registers 70
Time Out Interrupts 72
FCR – FIFO Control 74
LCR – Line Control 74
MCR – Modem Control 74
LSR – Line Status 75
MSR – Modem Status 75
SCR – Scratch 76
DLL – Divisor Latch (LSByte) 76
DLM – Divisor Latch (MSByte) 76
Chapter 4 79
Chapter 4 – SocketModem 80
(MT2456SMI-22) 80
Applications Notes 85
Chapter 5 87
Chapter 5 – SocketModem IP 88
(MT2456SMI-IP) 88
Chapter 6 95
(MTXCSEM) 96
Application Notes 100
Chapter 7 101
Chapter 7 – SocketModem ISDN 102
(MT128SMI) 102
Technical Specifications 103
Serial Configuration 104
Electrical Characteristics 105
MT128SMI Developer Board 106
MT128SMI Schematics 107
Chapter 8 111
Chapter 8 – SocketModem GPRS 112
(MTSMC-G) 112
Mechanical Dimensions 114
SocketModem Configuration 115
MMCX Plug 120
MMCX / SMA Adapter 120
Antenna Cable 120
Chapter 9 121
Chapter 9 – SocketModem CDMA 122
(MTSMC-C) 122
CDMA Antenna 127
Radio Characteristics 127
Chapter 10 128
Chapter 10 – SocketWireless 129
Bluetooth (MTS2BTSMI) 129
Category Description 131
Changing Configuration 135
Antenna Requirements 136
Antenna 136

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Multitech MT5600SMI Specifications Page 84

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