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Chapter 3 – SocketModem (MT9234SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342I) 79
Electrical Characteristics
5V Serial – Standard (SMI) and Medical Device (SMI-HV) Build
Options
5VDC Characteristics (VDD = 5V ± 0.25V) VDDMAX = 5.25V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Input High
Min 2.52V
Input Low
Max .9V
–
Reset (24) Input High
Min 2.52V
Input Low
Max 0.3V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37),
–RI (36), –RXD (34)
Output High
Min 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF
5V Parallel – Standard (SMI) and Medical Device (SMI-HV)
Build Options
5VDC Characteristics (VDD = 5V ± 0.25V) VDDMAX = 5.25V
Digital Inputs
–DS (40)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), A2 (34),
–WR (32), –RD (33)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Input / Output
Output buffer can source 12 mA at 0.4 V
DO (37), D1 (38), D2 (29), D3 (39), D4 (35),
D5 (36), D6 (41), D7 (27)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Output
INT (30)
Output High
Min 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF
3.3V Serial – Industrial Temperature (SMI-L, SMI-ITP) Build
Option
3.3VDC Characteristics (VDD = 3.3V ± 0.3V) VDDMAX = 3.6V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Input High
Min 2.52V
Input Low
Max 0.9V
–
Reset (24) Input High
Min 2.52V
Input Low
Max 0.3V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI
(36), –RXD (34)
Output High
Min. 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF
3.3V Parallel – Industrial Temperature (SMI-L, SMI-ITP) Build
Options
3.3VDC Characteristics (VDD = 3.3V ± 0.3V) VDDMAX = 3.6V
Digital Inputs
–DS (40)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Input/Output
Output buffer can source 12 mA at 0.4 V
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36),
D6 (41), D7 (27)
Input High
Min 2.52V
Input Low
Max 0.9V
Digital Output
INT (30)
Output High
Min 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF
- 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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