Multi-Tech Systems MT5600SMI-34 - Manual (Page 3)

Table of Contents
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 3
Contents
Chapter 1 – Product Description and Specifications................................................................................ 5
Introduction ................................................................................................................................................ 5
Product Description ................................................................................................................................... 5
Features..................................................................................................................................................... 6
Technical Specifications ............................................................................................................................ 7
Sources of Additional Information.............................................................................................................. 7
Chapter 2 – Mechanical Specifications ...................................................................................................... 8
Physical Dimensions ................................................................................................................................. 8
Serial Pin Configurations ........................................................................................................................... 9
Parallel Pin Configurations ...................................................................................................................... 11
Chapter 3 – Electrical Characteristics ...................................................................................................... 13
Handling Precautions .............................................................................................................................. 13
I/O Electrical Characteristics ................................................................................................................... 13
3.3V Serial SocketModem ................................................................................................................... 13
3.3V Parallel SocketModem................................................................................................................. 13
5V Serial SocketModem ...................................................................................................................... 14
5V Parallel SocketModem.................................................................................................................... 14
Operating Conditions............................................................................................................................... 14
Absolute Maximum Ratings..................................................................................................................... 14
Current and Power Requirements ........................................................................................................... 15
Parallel Host Bus Timing ......................................................................................................................... 16
Parallel Host Bus Timing Table ........................................................................................................... 16
Parallel Host Bus - Read...................................................................................................................... 17
Parallel Host Bus - Write...................................................................................................................... 17
Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description...................................... 18
SocketModem Parallel Interface.............................................................................................................. 18
Overview.................................................................................................................................................. 18
Register Signal Definitions ...................................................................................................................... 20
IER – Interrupt Enable Register (Addr = 1, DLAB = 0) ........................................................................ 20
FCR – FIFO Control Register (Addr = 2, Write Only) .......................................................................... 21
IIR – Interrupt Identifier Register (Addr = 2) ........................................................................................ 22
LCR – Line Control Register (Addr = 3)............................................................................................... 23
MCR – Modem Control Register (Addr = 4) ........................................................................................ 24
LSR – Line Status Register (Addr = 5) ................................................................................................ 25
MSR – Modem Status Register (Addr = 6) .......................................................................................... 26
RBX – RX Buffer (Receiver Buffer Register) (Addr = 0, DLAB = 0) .................................................... 26
THR – TX Buffer (Transmitter Holding Register) (Addr = 0, DLAB = 0) .............................................. 26
SCR – Scratch Register (Addr = 7)...................................................................................................... 27
Receiver FIFO Interrupt Operation .......................................................................................................... 28
Receiver Data Available Interrupt ........................................................................................................ 28
Receiver Character Timeout Interrupts................................................................................................ 28
Transmitter FIFO Interrupt Operation ...................................................................................................... 28
Transmitter Empty Interrupt ................................................................................................................. 28
Chapter 5 – AT Commands, S-Registers, and Result Codes ................................................................. 29
Introduction .............................................................................................................................................. 29
Data Commands...................................................................................................................................... 30
Generic Modem Control Commands ................................................................................................... 30
DTE-Modem Interface Commands ...................................................................................................... 36
Call Control Commands....................................................................................................................... 41
Modulation Control Commands ........................................................................................................... 51
Error Control Commands ..................................................................................................................... 55
Data Compression Commands............................................................................................................ 60
V.8/V.8bis Commands ......................................................................................................................... 63
Diagnostic Commands......................................................................................................................... 65