73M2901CE-IMR-F1 datasheet, PDF

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73M2901CE-IMR-F1: DescriptionNetwork Controller u0026 Processor ICs; CategoryTopical application Wireless rf/communication; File Size501KB，27 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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73M2901CE-IMR-F1 Overview

Network Controller u0026 Processor ICs

73M2901CE-IMR-F1 Parametric

Parameter Name	Attribute value
Product Category	Network Controller & Processor ICs
Manufacturer	Maxim
RoHS	Details
Product	Modems
Data Rate	2.4 kb/s
Frequency	11.06 MHz
Interface Type	Serial
Operating Supply Voltage	3.3 V
Operating Supply Current	9.5 mA
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	QFN-32
Development Kit	73M2901CE-EVM-600
Minimum Operating Temperature	- 40 C
Supply Voltage - Max	3.6 V
Supply Voltage - Min	2.7 V
Unit Weight	0.006653 oz

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73M2901CE

V.22bis Single Chip Modem

Simplifying System Integration™

DS_2901CE_031

DESCRIPTION

The 73M2901CE low speed modem integrates a

data pump, controller, and analog front end in a

3.3 V device with a powerful "AT" command host

interface. The modem reduces external

component count/cost by incorporating many

features like parallel phone detect, Line-In-Use

and Ring detection in software without requiring

additional components.

The device is a "one chip fits all” solution for

applications including set-top boxes, point-of-sale

terminals, automatic teller machines, utility

meters, vending machines and smart card

readers.

Another distinctive feature of this device is pin

compatibility with Teridian’s flagship embedded

hard modems, the 73M2901CL, and the

73M1903 soft modem AFE. This offers

customers a cost effective method to design for

both hard or soft modem solutions in the same

system as a risk-free cost reduction path.

Complete support, modem reference designs

and error correction software are part of the

solution offered by Teridian. Our in-house

application engineering team is here to help

meet your international certification needs.

FEATURES

•

True one chip solution for embedded systems

As low as 9.5 mA operating with standby and

power down mode available

Power supply operation from 3.6 V to 2.7 V

Data modes and speeds:

V.22bis – 2400 bps

V.22/Bell212 – 1200 bps

V.21/Bell103 – 300 bps

V.23 – 1200/75 bps (with PAVI turnaround)

Bell202 – 1200 bps

Bell202/V23 1200 bps FDX 4-wire operation

V.22/Bell 212A/V.22bis synchronous modes

International Call Progress support:

FCC part 68, CTR21, JATE, etc.

DTMF generation and detection

Worldwide Caller ID capability

U.S. Type I and II support

EIA 777A compliant

SIA-2000 compliant

SMS messaging support

On chip hybrid driver

Blacklisting capability

Line-In-Use and Parallel Pick-Up (911) detection

with voltage or low cost energy detection method

Incoming ring energy detection through CID

path; no optocoupler circuitry required

Manufacturing Self Test capability

Backward compatible with 73M2901CL

Packaging: 32 lead QFN, 32-pin TQFP

DATA SHEET

January 2010

•

Rev. 3.4

73M2901CE Data Sheet

DS_2901CE_031

Table of Contents

Hardware Description .................................................................................................................... 4

1.1

Power Supply ....................................................................................................................... 4

1.2

Low Power Mode .................................................................................................................. 4

1.3

Analog Line / Hybrid Interface ............................................................................................... 4

1.4

Interrupt Pins ........................................................................................................................ 4

1.5

Crystal Oscillator................................................................................................................... 5

1.5.1 Specifying a Crystal ..................................................................................................... 5

1.6

Reset .................................................................................................................................... 5

1.7

Asynchronous and Synchronous Serial Data Interface .......................................................... 5

Pinout ............................................................................................................................................. 6

Pin Descriptions ............................................................................................................................ 7

3.1

Power Pins ........................................................................................................................... 7

3.2

Analog Interface Pins ............................................................................................................ 7

3.3

Digital Interface Pins ............................................................................................................. 7

3.4

External Interrupt Pins .......................................................................................................... 8

3.5

Oscillator Pins....................................................................................................................... 8

Electrical Specifications................................................................................................................ 9

4.1

Absolute Maximum Ratings................................................................................................... 9

4.2

Recommended Operating Conditions.................................................................................... 9

4.3

Receiver ............................................................................................................................... 9

4.4

Transmitter ......................................................................................................................... 10

4.5

Maximum Transmit Level .................................................................................................... 10

4.6

DC Characteristics, Vcc = 3.3 V .......................................................................................... 11

4.6.1 DC Supply Current, VDD = 2.7 V (Battery EOL)......................................................... 11

4.6.2 DC Supply Current , VDD = 3.0 V .............................................................................. 11

4.6.3 DC Supply Current VDD = 3.3 V ................................................................................ 12

4.6.4 DC Supply Current VDD = 3.6 V ................................................................................ 12

Firmware Description .................................................................................................................. 13

5.1

Firmware Overview ............................................................................................................. 13

5.2

Firmware Features .............................................................................................................. 13

Design Considerations ................................................................................................................ 14

6.1

Layout Considerations ........................................................................................................ 14

6.2

73M2901CE Design Compatibility ....................................................................................... 15

6.3

Telephone Line Interface .................................................................................................... 15

6.4

Functional Considerations ................................................................................................... 16

6.4.1 SMS and V.23 Half Duplex ........................................................................................ 16

6.4.2 Leased Line Mode ..................................................................................................... 16

6.4.3 73M2901CE Energy Ring Detection .......................................................................... 17

6.4.4 Caller ID Mode Changes ........................................................................................... 18

6.4.5 Selectable Answer Tone Frequency Detection ........................................................... 18

6.4.6 73M2901CE S99 Country Code Support ................................................................... 18

Reference Designs ...................................................................................................................... 21

7.1

Low Cost Design Using DSP Ring and Status Monitoring .................................................... 21

7.2

Reference Design Using Traditional Hardware Line Monitoring ........................................... 22

Modem Performance Characteristics ......................................................................................... 23

8.1

BER versus SNR ................................................................................................................ 23

8.2

BER versus Receive Level .................................................................................................. 23

Package Mechanical Drawing ..................................................................................................... 24

9.1

32-Pin QFN ........................................................................................................................ 24

9.2

32-Pin TQFP....................................................................................................................... 25

10 Ordering Information ................................................................................................................... 26

11 Related Documentation ............................................................................................................... 26

12 Contact Information..................................................................................................................... 26

Revision History .................................................................................................................................. 27

Rev. 3.4

73M2901CE Data Sheet

DS_2901CE_031

1 Hardware Description

The 73M2901CE is designed to operate from a +3.6 to +2.7 volt supply with low power consumption

(~30 mW @ 3.0 volts). The modem supports automatic standby idle mode. The modem will also accept

a request to power down from the DTE via hardware control. No additional major components are

required to complete the modem core logic. The modem provides direct firmware LED support via the

port pins (pins 3, 4, 5, 6, 31, and 32).

The 73M2901 CE includes the following hardware features:

•

Fully self-contained. “AT” Command interpreter and data pump.

User pins available.

Synchronous serial data I/O available.

Asynchronous serial port.

On-chip hybrid and line driver.

Autobaud capability from 300 bps to 9600 bps.

Reduced external hardware support required with energy incoming ring detection.

1.1

Power Supply

Power is supplied to the 73M2901CE by the VPD and VPA pins. The 73M2901CE is designed for a

single +3.6 to +2.7 volt supply and for low power consumption (~30mW @ 3.0 volts). Ground is supplied

to the 73M2901CE by the VND and VNA pins.

The 73M2901CE has been designed with separated analog and digital supplies to insure the best

performance of the part by using separately filtered power supplies. It is recommended that separate

locally bypassed traces be used to apply power to the analog supply VPA and the digital supply VPD.

1.2

Low Power Mode

The Teridian 73M2901CE supports a low power standby mode. If the low power standby option is

enabled, the 73M2901CE will go into a power saving mode when idle.

While in this mode, the oscillator will be running and clocks will be supplied to the UART, timers and

interrupt blocks, but no clocks will be supplied to the CPU. Instruction processing and activity on the

internal busses is halted. Normal operation is resumed when an interruption such as assertion of

DTR

RING

occurs, a character is sent to the 73M2901CE TXD input, or a reset occurs.

1.3

Analog Line / Hybrid Interface

The 73M2901CE provides a differential analog output (TXAP and TXAN) and a single-ended analog input

(RXA) with internal A/D and D/A converters. A driver is provided for an internal hybrid function.

The internal hybrid driver is capable of driving an external load matching impedance and a line-coupling

transformer. The internal hybrid/line driver senses the load and adapts itself to its requirements.

The 73M2901CE provides firmware control for a hook relay driver (RELAY) as well as interrupt support

for a ring detect opto-coupler (RING).

1.4

Interrupt Pins

The external interrupt sources,

DTR

and

RING,

come from dedicated input pins of the same name.

DTR

informs the 73M2901CE that the host has requested the 73M2901CE to perform a specific function.

The function of

DTR

can be changed by “AT” commands (described in the

73M2901CE AT Command

User Guide).

Rev. 3.4

73M2901CE-IMR-F1 Related Products

	73M2901CE-IMR-F1	73M2901CE-DB-US
Description	Network Controller u0026 Processor ICs	Networking Development Tools 73M2901CE Demo Brd Us
Product Category	Network Controller & Processor ICs	Networking Development Tools
Manufacturer	Maxim	Maxim

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