Datasheet 20463 Datasheet (CONEX)

Data Sheet (Preliminary)

Conexant Proprietary Information

Doc. No.100444A

December 21, 1999

SmartACFL



Modem

V.90/K56flex/V.34/V.32bis Modem Device Sets with Microcontroller (L2702),
Modem Data Pump (P9373), SmartDAA



(20463), and Optional Voice Codec (20437)

for Low Power Applications

The Conexant SmartACFL V.90/K56flex Modem Device Set with SmartDAA
technology supports analog data up to 56 Kbps, analog fax to 14.4 Kbps,
telephone answering machine (TAM), V.80 synchronous access mode, on­board DSVD, voice/speakerphone (optional), and cellular/GSM operation.
Serial, parallel, or PC Card host interface operation is supported depending on
the selected model (Table 1).

The modem supports ITU-T V.90/K56flex, V.34 and V.32bis data
modulations and is designed to operate with dial-up telephone lines in the U.S.
and worldwide. PC Card and parallel host interface models also support analog
cellular direct connect and GSM direct connect. Low profile, small TQFP
packages and low voltage operation with low power consumption make this
device set ideal for laptop, notebook, and palmtop applications using the
parallel host or serial DTE interface with the MCU, or the PC Card interface
with the MCUP.

The SmartACFL device set consists of a Microcontroller (MCU or MCUP) in a
128-pin TQFP, a Modem Data Pump (MDP) in a 100-pin TQFP, and a Line
Side Device (LSD) (SmartDAA device) in a 32-pin TQFP. The optional Voice
Codec (VC), in a 32-pin TQFP, supports voice/full-duplex speakerphone
(FDSP) operation with interfaces to a microphone and speaker and to a
telephone handset/headset. Figure 1 identifies the major hardware signal
interfaces. The MCUP supports two peripheral channels, one channel for the
modem and a second channel for an optional user-defined function
(Function 2).

Conexant's SmartDAA technology (patent pending) eliminates the need for a
costly line transformer, relays, and opto-isolators typically used in discrete DAA
(Data Access Arrangement) implementations. The SmartDAA architecture also
simplifies product implementation by eliminating the need for country-specific
components enabling worldwide homologation of a single modem board design
and a single bill of materials (BOM).

The SmartDAA system-powered DAA operates reliably without drawing power
from the line, unlike line-powered DAAs that operate poorly when line current is
insufficient due to long lines or poor line conditions. Enhanced features, such
as monitoring of local extension status without going off-hook, are also
supported.

Incorporating Conexant’s proprietary Digital Isolation Barrier (DIB) design
(patent pending) and other innovative DAA features, the SmartDAA
architecture simplifies application design, minimizes layout area, and reduces
component cost.

Features

•

V.90 data/V.17 fax modem

•

SmartDAA technology

−

System side powered DAA operates
under poor line current supply
conditions

−

Wake-on-ring

−

Ring detection

−

Line polarity reversal detection

−

Line current loss detection

−

Pulse dialing

−

Call waiting detection

−

Digital PBX line protection

−

Meets world-wide DC VI Masks
requirements

−

Caller ID detection

•

Data/Fax/Voice call discrimination

•

Hardware-based modem controller

•

Hardware-based digital signal
processor (DSP)

•

Voice/full-duplex speakerphone mode
(S models)

•

V.70 DSVD using optional RCDSVD
SCP (S models)

•

World-wide operation

•

Industry standard communication
commands

•

Selectable parallel/serial interface with
speeds up to 230.4 kbps

−

Parallel 16550A UART-compatible
interface

−

Serial ITU-T V.24 (EIA/TIA-232-E)

•

V.80 synchronous access mode

•

Direct mode (serial interface)

•

Synchronous data mode
(serial interface)

•

V.22 bis fast connect

•

Analog cellular direct connect

•

GSM direct connect

•

Sleep mode

•

Thin packages support low profile
designs

•

+3.3V operation with +5V tolerant
digital inputs

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

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Proprietary Information

Table 1. SmartACFL Modem Models and Functions

Model/Order/Part Numbers Supported Functions

Marketing Name Device Set

Order No.

MCU

[128-Pin

TQFP]

Part No.

MDP

[100-Pin

TQFP]

Part No.

LSD

[32-Pin

TQFP]

Part No.

Optional

Voice Codec

(VC)

[32-Pin TQFP]

Part No.

V.90/K56fle

x Data

V.34
Data

V.32 bis

Data,

V.17 Fax,

Fax Cl 1,
Fax Cl 2,

TAM,

W-W, V.80

Voice/

FDSP

SmartACFL/56S-PCC DS56-L492-001 L2702-12 P9373-11 20463-11 20437-11 Y Y Y Y

SmartACFL/56-PCC DS56-L492-011 L2702-12 P9373-11 20463-11 — Y Y Y —

SmartACFL/56S DS56-L492-021 L2702-15 P9373-11 20463-11 20437-11 Y Y Y Y

SmartACFL/56 DS56-L492-031 L2702-15 P9373-11 20463-11 — Y Y Y —

Notes:

1. Model options:
S Voice and speakerphone
PCC PC Card host interface (serial DTE/parallel host if not PCC)
56 56 kbps max. rate per V.90
33 33.6 kbps max. rate per V.34
14 14.4 kbps max. rate per V.32bis

2. Supported functions (Y = Supported; — = Not supported):
TAM Telephone answering machine support (handset support requires S model)
Fax Cl 1 and Cl 2 Fax Class 1 and Fax Class 2 support
FDSP Full-duplex speakerphone

Revision History

Revision Date Comments

A 12/21/99 Initial public release of document

Copyright © Conexant Systems, Inc., 1999. All Rights Reserved.

Information in this document is provided in connection with Conexant Systems, Inc. ("Conexant") products. These materials are provided by
Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or
omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant
makes no commitment to update the information contained herein. Conexant shall have no responsibility whatsoever for conflicts or
incompatibilities arising from future changes to its specifications and product descriptions.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in
Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever.

THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO
SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A
PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL
PROPERTY RIGHT. Conexant further does not warrant the accuracy or completeness of the information, text, graphics or other items
contained within these materials. Conexant shall not be liable for any special, indirect, incidental, or consequential damages, including without
limitation, lost revenues or lost profits, which may result from the use of these materials.

Conexant products are not intended for use in medical, life saving or life sustaining applications. Conexant customers using or selling
Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from
such improper use or sale.

The following are trademarks of Conexant Systems, Inc.: Conexant, the Conexant C symbol, “What’s Next in Communications Technologies”,
SmartDAA, SmartHSF, and SmartACFL. Product names or services listed in this publication are for identification purposes only, and may be
trademarks of third parties. Third-party brands and names are the property of their respective owners.

Reader Response:

Conexant strives to produce quality documentation and welcomes your feedback. Please send
comments and suggestions to [email protected]. For technical questions, contact your local Conexant
sales office or field applications engineer.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

3

Proprietary Information

Introduction

(continued)

The optional Voice Codec (VC) supports voice/full­duplex speakerphone (FDSP) operation with
interfaces to a microphone and speaker and to a
telephone handset/headset. The optional RCDSVD
Speech Codec Processor (SCP) supports DSVD.

The modem operates by executing firmware from
external 1 Mbit (128k X 8) RAM and 2 Mbit (256k X

8) ROM/Flash ROM. The 33S and 14S models can
alternatively use external 1 Mbit or 2 Mbit
ROM/Flash ROM and the MCU’s internal 32K X 8
RAM. For GSM support the ROM size is doubled.

Accelerator kits and reference designs are available
in electronic form to minimize application design time
and costs. The design package includes schematics,
bill of materials (BOM), board layout files in Gerber
format, and complete documentation. The design is
pretested to pass FCC Part 15, Part 68, and CTR 21
for immediate manufacturing.

Applications

•

PC Cards

•

Embedded systems

•

Serial box modems

•

Set top boxes

•

Point of sales terminals

•

Remote monitoring and data collection systems

Modem Data Pump (MDP)

P9373: 100-Pin TQFP

Voice Codec (VC)

20437: 32-Pin TQFP

(Optional)

SPEAKER

(Mic/Speaker)

Interface

(Optional)

TIP
RING

Electronic

Inductor,

Diode Bridge,

Protection &

EMI,
Impedance
Components

SmartDAA

Interface

Modem

Data Pump

(MDP)

Telephone

Line

Digital Speaker

Circuit (Optional)

PCCard/Parallel/

Serial DTE

Interface

MIC
SPEAKER

MD251F2_FID

SOUNDUCER

Digital

Isolation

Barrier

(DIB)

(OEM

supplied)

Line Side Device (LSD)

20463: 32-Pin TQFP

Line
Side
DIB

Interface

(LSDI)

Codec

Telephone

Line

Interface

DAA Hardware

HS Hybrid

Components

(Optional)

Cellular
Interface

GSM
Interface

RAM

1M (128K x 8)

Central

Processor

Unit (MCU)

SPEAKER

Serial EEPROM
2K (256 x 8) to

32K (4K x 8)

(Optional)

ROM/Flash ROM

2M (256K x 8)

4M (512K X 8)*

* = GSM Support

MCU

Interface

MDP

Interface

Internal

RAM

Serial

EEPROM

Interface

Expansion

Memory

Bus

Interface

Cellular and

GSM

Interface

Host

Interface

Microcontroller Unit (MCU)

L2702: 128-Pin TQFP

Rectifier and

Filter

Components

Figure 1. SmartACFL Modem Major Interfaces

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

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Proprietary Information

Detailed Features

General Modem Features

•

Downloadable Architecture

−

Downloadable MCU firmware from the host/DTE

−

Downloadable MDP code modules from the
MCU, transparent to the host

•

V.90 data modem with receive rates up to 56k bps
and send rates up to V.34 rates

−

ITU-T V.90, K56flex, V.34 (33.6 kbps), V.32 bis,
V.32, V.22 bis, V.22, V.23, and V.21; Bell 212A
and 103

−

V.42 LAPM and MNP 2-4 error correction

−

V.42 bis and MNP 5 data compression

−

MNP 10EC™ enhanced cellular performance

−

V.250 (ex V.25 ter) and V.251 (ex V.25 ter
Annex A) commands

•

V.22 bis fast connect

•

Analog cellular direct connect

•

GSM direct connect

•

V.17 fax modem with send and receive rates up to

14.4 kbps

−

ITU-T V.17, V.29, V.27 ter, and V.21 ch. 2

−

EIA/TIA 578 Class 1 and T.30 Class 1.0
commands

•

V.80 synchronous access mode supports host­controlled communication protocols with H.324
interface support

•

Data/Fax/Voice call discrimination

•

Hardware-based modem controller

•

Worldwide operation

−

US/Japan/Canada/TBR21 and other countries

−

Caller ID and distinctive ring detection

−

Call progress, blacklisting

•

Telephony/TAM

−

V.253 commands

−

8-bit µ-Law/A-Law coding (G.711)

−

8-bit/16-bit linear coding

−

8 kHz sample rate

−

Concurrent DTMF, ring, and Caller ID detection

•

Full-duplex speakerphone mode (S models)

−

Microphone and speaker interface

−

Telephone handset or headset interface

−

Acoustic and line echo cancellation

−

Microphone gain and muting

−

Speaker volume control and muting

•

PC Card interface (MCUP only) supports two
functions with programmable I/O and window size

•

JTAG Boundary Scan support

•

Built-in host/DTE interface with speeds up to 230.4
kbps

−

Parallel 16550A UART-compatible interface
(MCU)

−

Serial ITU-T V.24 (EIA/TIA-232-E) (MCU)

−

PC Card (MCUP)

•

Flow control and speed buffering

•

Automatic format/speed sensing

•

Serial sync/async data; parallel async data

•

Sleep mode

•

Thin packages support low profile designs (1.6 mm
max. height)

•

MCU (L2702): 128-pin TQFP

•

MDP (P9373): 100-pin TQFP

•

LSD (20463): 32-pin TQFP

•

VC (20437): 32-pin TQFP

Description

General

The SmartACFL device set, comprised of separate
microcontroller (MCU), modem data pump (MDP),
and line side device (LSD) devices, provides the
processing core for a complete modem design. The
optional Voice Codec (VC) supports voice/full-duplex
speakerphone (FDSP) operation with interfaces to a
microphone and speaker and to a telephone
handset/headset (S models). The S model can also
be ordered with an RCDSVD Speech Codec
Processor (SCP) in a 100-pin PQFP to support
DSVD.

Modem operation, including dialing, call progress,
telephone line interface, telephone handset interface,
voice/speakerphone interface, and host interface
functions are supported and controlled through the
V.250, V.251, and V.253-compatible command set.

The modem hardware connects to the host via a
parallel, serial, or PC Card interface. The OEM adds
discrete components as required by the modem
model and the application to complete the system
(Table 1). These components may include a crystal
circuit, EEPROM, DIB components, telephone line
interface, optional voice/speakerphone interface, and
optional cellular/GSM interface.

Parallel interface operation, including cellular and
GSM support, is selected by PARIF input high. Serial
interface operation is selected by PARIF input low.
Cellular operation is selected by LINE/CELL input
low. GSM operation is selected by LINE/GSM input
low.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL

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Data/Fax Modes

In V.90/K56flex data modem mode, the modem can
receive data from a digitally connected central site
modem (CSM) at line speeds up to 56 kbps.
Asymmetrical data transmission supports sending
data up to V.34 rates; this mode can fallback to full­duplex V.34 mode, and to lower rates as dictated by
line conditions.

In V.34 data mode, the modem operates at line
speeds up to 33.6 kbps. Error correction (V.42/MNP
2-4) and data compression (V.42 bis/MNP 5)
maximize data transfer integrity and boost average
data throughput up to 230.4 kbps. Non-error­correcting mode is also supported.

Data modem modes perform complete handshake
and data rate negotiations. Using V.34 modulation to
optimize modem configuration for line conditions, the
modem can connect at the highest data rate that the
channel can support from 33600 bps down to 2400
bps with automatic fallback. Automode operation in
V.34 is provided in accordance with PN3320 and in
V.32 bis in accordance with PN2330. All tone and
pattern detection functions required by the applicable
ITU or Bell standard are supported.

In V.32 bis mode, the modem operates at line
speeds up to 14.4 kbps.

In V.22 bis fast connect mode, the modem can
connect at 2400 bps with a very short training time,
which is very efficient for small data transfers.

In fax modem mode, the modem can operate in 2­wire, half-duplex, synchronous mode and can
support Group 3 facsimile send and receive speeds
of 14400, 12000, 9600, 7200, 4800, and 2400 bps.
Fax data transmission and reception performed by
the modem are controlled and monitored through the
EIA/TIA-578 Fax Class 1, T.30 Fax Class 1.0, or Fax
Class 2 command interface. Full HDLC formatting,
zero insertion/deletion, and CRC
generation/checking are provided. Both transmit and
receive fax data are buffered within the modem. Data
transfer to and from DTE is flow controlled by
XON/XOFF and RTS/CTS.

Synchronous Access Mode (SAM) - Video
Conferencing

V.80 Synchronous Access Mode between the
modem and the host/DTE is provided for host­controlled communication protocols, e.g., H.324
video conferencing applications.

Voice-call-first (VCF) before switching to a
videophone call is also supported.

Worldwide Operation

The modem operates in US/Japan/Canada/TBR21
and other countries. Country dependent parameters
for functions such as dialing, carrier transmit level,
calling tone, call progress tone detection, answer
tone detection, blacklisting, and relay control are
programmable by ConfigurACE II for Windows.

SmartDAA technology allows a single PCB design
and single BOM to be homologated worldwide.
Advanced features such as digital PBX protection
are also supported.

TAM Mode

TAM Mode features include 8-bit µ-Law, A-Law, and
linear coding at 8 kHz sample rate. Full-duplex voice
supports concurrent voice receive and transmit.
Tone detection and generation, call discrimination,
and concurrent DTMF detection are also supported.
ADPCM (4-bit IMA) coding is supported to meet
Microsoft WHQL logo requirements.

TAM Mode is supported by three submodes:

1. Online Voice Command Mode supports
connection to the telephone line or, for the S
model, a handset.

2. Voice Receive Mode supports recording voice or
audio data input from the telephone line or, for
the S model, a microphone/handset.

3. Voice Transmit Mode supports playback of voice
or audio data to the telephone line or, for the S
model, a speaker/handset.

SmartACFL



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Voice/Speakerphone Mode (S Models)

S models include additional telephone handset,
external microphone, and external speaker
interfaces that support voice and full-duplex
speakerphone operation.

Hands-free full-duplex telephone operation is
supported in Speakerphone Mode under host
control. Speakerphone Mode features an advanced
proprietary speakerphone algorithm which supports
full-duplex voice conversation with acoustic, line, and
handset echo cancellation. Parameters are
constantly adjusted to maintain stability with
automatic fallback from full-duplex to pseudo-duplex
operation. The speakerphone algorithm allows
position independent placement of microphone and
speaker. The host can separately control volume,
muting, and AGC in microphone and speaker
channels.

V.70 DSVD Mode using RCDSVD SCP Device
(S Models)

On-board DSVD operation requires installation of the
optional RCDSVD SCP (R6715-14). GSM operation
is not available when the RCDSVD SCP is
connected because MCU port PB5 is used for SCP
chip select output (~SVDSEL) rather than address
line A18 output which is needed to support the 4M
ROM.

DSVD provides full-duplex digital simultaneous voice
and data over a single telephone line. DSVD uses
codecs in the RCDSVD SCP to code (compress)
analog speech signals on the RCDSVD LINEIN pin
or MICIN pin for passing to the modem controller in
digitized form. DSVD also decodes (decompresses)
coded speech received from the modem controller
for routing to the RCDSVD LINEOUT pin or
SPKP/SPKN pins in analog form.

DSVD operates in accordance with ITU-T
interoperable G.729 and G.729 Annex A with
interoperable G.729 Annex B. Voice activity
detection supports speech coding at an average bit
rate significantly lower than 8.0 kbps.

DSVD decoder timing recovery algorithm
compensates for clock skew, asynchronous host-to­decoder data transfer delay, intervening variable
length data block transmission delay, and loss of
encoded speech data.

The voice interface can be in the form of a headset,
handset or a microphone and speaker (half-duplex
speakerphone). Handset echo cancellation supports
handset use through a hybrid.

In Handset Mode, the RCDSVD SCP interfaces to
the telephone interface circuit using the Line Input
(LINEIN) and Line Out (LINEOUT) lines. In Headset
or Speakerphone Mode, the RCDSVD SCP
interfaces to the audio interface circuit using the
Microphone Input (MICIN) and Speaker out (SPKR)
lines.

GSM (Parallel Host or PC Card Interface)

GSM operation requires installation of 4M (512k x 8)
ROM (56 models) or 2M ROM (33 and 14 models).

ON-board DSVD is not available when the 4 Mbit
ROM is installed since the MCU port PB5 is used for
address line 18 rather than RCDSVD SCP chip
select output (~SVOSEL).

Features supported in GSM operation include:

•

Data modem

−

V.21, V.23, V.22, V.22 bis, V.32

−

ISDN interoperability: 300 bps to 9600 bps

•

Transparent asynchronous mode up to 9600 bps

•

Non-transparent mode (RLP) up to 9600 bps

•

Fax modem send and receive rate up to 9600 bps

•

AT GSM commands (ETSI 07.07)

•

GSM direct connect

•

Firmware interface for OEM-provided phone driver

•

Automatic GSM cable presence detection

•

Built-in parallel host (16550A UART) interface

Sleep Mode

Sleep mode is supported in the modem device set
and the RCDSVD SCP device.

Additional Information

Additional information is described in the SmartACFL
Modem Device Family with SmartDAA Technology
for Low Power Applications Designer’s Guide (Doc.
No. 100446) and the Command Reference Manual
(Doc. No. 100500).

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL

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Hardware Description

SmartDAA technology (patent pending) eliminates
the need for a costly analog transformer, relays, and
opto-isolators that are typically used in discrete DAA
implementations. The programmable SmartDAA
architecture simplifies product implementation in
worldwide markets by eliminating the need for
country-specific components.

Microcontroller (MCU/MCUP)

The microcontroller is a Conexant 8-bit
microcomputer with pins to support serial
DTE/parallel host bus/PC Card, MDP, voice/TAM,
speakerphone, and RCDSVD SCP interface
operation. The operating voltage is +3.3V with +5V
tolerant inputs.

The MCUP incorporates a built-in PC Card interface
and CIS memory allowing the MCUP to directly
connect to the PC Card 68-pin socket without
requiring external PICA and CIS devices.

The MCU connects to the DTE/host via a V.24
(EIA/TIA-232-E) serial DTE interface or a parallel
host bus depending on installed firmware, whereas
the MCUP connects to a PC Card socket via built-in
PC Card interface. Unless otherwise stated,
references to general microcontroller functions
include both the MCUP and MCU.

The MCU performs the command processing and
host interface functions. The crystal frequency is

28.224 MHz. The MCU outputs a 28.224 MHz clock
to the MDP eliminating need for a separate MDP
crystal circuit.

The MCU connects to the MDP via dedicated lines
and the external bus. The external bus also connects
to OEM-supplied RAM (56 models), ROM/flash
ROM, and to the optional RCDSVD SCP.

The MCU connects to a serial EEPROM over a
dedicated serial interface.

Two independent functions are supported; the
modem function and an optional user-defined
Function 2. A Card Option Configuration Register
and a Configuration and Status Register for each
function allow independent configuration/control and
status reporting of the respective function.

The MCUP PC Card interface features include:

•

PC Card interface logic and memory

−

Internal 512-byte Card Information Structure
(CIS) provides the tuple information needed to
define the PC Card functionality.

−

CIS Table is configurable from ROM/flash
memory (default) or from NVRAM (option)

−

Address decode logic

•

Modem Function

−

Decoding for standard COM ports in
Overlapping I/O Address Mode

−

Independent I/O Address Mode support

−

Power-down mode control

−

Digital speaker pass-through

−

Supports two ring handling methods

−

Ring Indicate pass-through to Status Change

−

Six 8-bit Modem Function Card Configuration
Registers

Configuration Option Register (full support)
Configuration and Status Register (full support)
Pin Replacement Register (CREADY and

RREADY)
Extended Status Register (RIEvt and RIEnab)
I/O Base Register 0
I/O Base Register 1

•

Optional User-defined Function 2

−

Reset and chip select control

−

Power-down mode control

−

16-bit data transfer control

−

Disable EEPROM control

−

Interrupt request pass through

−

Four 8-bit Card Configuration Registers

Configuration Option Register (full support)
Configuration and Status Register (full support)
I/O Base Register 0
I/O Base Register 1

•

MCU and MCUP packaged in 128-pin TQFP

SmartACFL

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RCDSVD Speech Codec Processor (SCP)
(Optional)

The RCDSVD SCP (R6715-14), required for on­board DSVD operation, is packaged in a 100-pin
PQFP. The 56.448 MHz crystal frequency is
supplied by the MDP XCLK output.

MCU/MCUP Firmware

MCU/MCUP firmware performs processing of
general modem control, command sets, data
modem, error correction and data compression
(ECC), fax class 1, fax class 2, DSVD,
voice/audio/TAM/speakerphone, W-class, V.80,
analog cellular, GSM, and serial DTE/parallel
host/PC Card interface functions according to
modem models (Table 1).

Configurations of the modem firmware are provided
to support parallel host bus interface (MCU), serial
DTE interface (MCU) or PC Card interface (MCUP)
operation.

The modem firmware is provided in object code form
for the OEM to program into external ROM/flash
ROM. The modem firmware may also be provided in
source code form under a source code addendum
license agreement.

Modem Data Pump (MDP)

The Modem Data Pump (MDP) supports data/fax
modem, voice record from and playback to the
telephone line, and optional voice/full-duplex
speakerphone operation. The MDP communicates
with the MCU via parallel bus, serial data and clock,
and serial voice (optional) signals. Downloadable
architecture allows upgrading of MDP code from the
MCU.

The MDP, packaged in a 100-pin TQFP, includes a
modem controller interface, a digital signal processor
(DSP), a voice codec (VC) interface, and a
SmartDAA Interface.

The MDP performs telephone line signal
modulation/demodulation in a hardware DSP which
reduces computational load on the host processor.
Downloadable architecture allows updating of MDP
executable code.

The SmartDAA Interface communicates with, and
supplies power and clock to, the LSD through the
DIB.

The input clock frequency is 28.224 MHz and is
supplied by the MCU. The operating voltage is +3.3V
with +5V tolerant inputs.

ADPCM voice processing is supported.

Downloading of MDP code from the MCU is
supported.

Digital Isolation Barrier (DIB) (OEM Supplied)

The DIB electrically DC isolates the MDP from the
LSD. The MDP is connected to a fixed digital ground
and operates with standard CMOS logic levels. The
LSD is connected to a floating ground and can
tolerate high voltage input (compatible with
telephone line and typical surge requirements).

A digital transformer (DXFMR) in the DIB power
channel couples power and clock digital waveforms
from the MDP to the LSD.

The DIB data channel supports bidirectional half­duplex serial transfer of data, control, and status
information between the MDP and the LSD over two
lines.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

9

Proprietary Information

SmartDAA Line Side Device (LSD)

The LSD includes a Line Side DIB Interface (LSDI),
a coder/decoder (codec), and a Telephone Line
Interface (TLI).

The LSDI communicates with, and receives power
and clock from, the SmartDAA interface in the MDP
through the DIB.

LSD power is received from the top of the DIB
DXFMR secondary winding through a half-wave
rectifying diode and capacitive power filter circuit.
The CLK input is also accepted from the top of the
DXFMR secondary winding through a capacitor and
a resistor in series.

Information is transferred between the LSD and the
MDP through the DIB_P and DIB_N pins. These pins
connect to the MDP DIB_DATAP and DIB_DATAN
pins, respectively, through the DIB.

The TLI integrates DAA and direct telephone line
interface functions and connects directly to the line
TIP and RING pins, as well as to external line
protection components.

Direct LSD connection to TIP and RING allows real­time measurement of telephone line parameters,
such as the telephone central office (CO) battery
voltage and individual telephone line (copper wire)
resistance. Direct LSD connection also allows
dynamic regulation of the off-hook TIP and RING
voltage and total current drawn from the CO. This
allows the modem to maintain compliance with U.S.
and worldwide regulations and to actively control the
DAA power dissipation.

Voice Codec (VC)

The optional VC, packaged in a 32-pin TQFP,
supports voice/full-duplex speakerphone (FDSP)
operation with interfaces to a microphone and
speaker and to a telephone handset/headset.

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

10

Conexant

Doc. No. 100444A

Proprietary Information

MCU/MCUP (L2702) Pinout Diagrams

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

102

101

100

99

98

97

96

95

94

93

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

~ROMSEL

~DPSEL

A16

A15

A14

A13

A12

A11

A10

A9

A8

VDD

A7

A6

A5

A4

A3

A2

A1

A0

TDI

TDO

TMS

TRSTP

TCK

GND

D7

D6

D5

D4

D3

D2

D1

D0

~TST

NVMCLK

~RXD

~DPRXD

NC

NC

NC

N

C

NC

~M

R

ES

~RES

NC

NC

NC

NC

NC

NC

~W

R

ITE

~READ

NC

NC

N

C

~DTR

G

N

D

XTLI

VDD

XTLO

G

ND

NC

~STPM

O

DE

~D

SR

~CTS

~R

LSD

~DRSO

U

T

~AAIND

~RI

~TM

~RDL

N

C

~NM

I

~DTR

IND

PD

1

PD2

~AL

~RTS

DPIRQ

~RLY1

~RLY2

~RLY3

~RLY4

LCS

PE5

PARIF

~EXTOH

GND

VGG

DV1TP

CLKOUT

NCNCNCNCNC

RINGD

NVMDATA

~TXD

~TXCLK

~RXCLK/~SCPIRQ

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

128

127

126

125

124

123

122

121

120

119

118

117

116

115

114

113

112

111

110

109

108

107

106

105

104

103

1156F3-4 PO-MCU-Ser-128T

NCNCGNDNCNCNCNCNCNCNCNCNCNCNCNCNCPG3

PG2

PG1

PG0

GND

~TMIND

~WKRESOUT

~SCPSEL

A17

~RAMSEL

Figure 2. MCU Pin Signals - Serial DTE Interface 128-Pin TQFP

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

11

Proprietary Information

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

102

101

100

99

98

97

96

95

94

93

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

~ROMSEL

~DPSEL

A16

A15

A14

A13

A12

A11

A10

A9

A8

VDD

A7

A6

A5

A4

A3

A2

A1

A0

TDI

TDO

TMS

TRSTP

TCK

GND

D7

D6

D5

D4

D3

D2

D1

D0

~TST

NVMCLK/TXDCLK

GSMTXD

DAA/GSM

N

C

NC

N

C

N

C

NC

~M

R

ES

~R

ES

NC

NC

N

C

N

C

NC

N

C

~W

R

ITE

~READ

N

C

NC

N

C

~HCS

G

N

D

XTLI

VD

D

XTLO

G

ND

NC

~STPM

O

DE

HD

0

H

D1

HD

2

HD3

H

D4

HD

5

H

D6

H

D

7

N

C

~N

M

I

H

A0

H

A1

HA2

~HWT

~HRD

DPIRQ

~RLY1/CTRL0

~RLY2/CTRL1/CTRL0

~RLY3/CELBSY

~RLY4

LCS

CELDATA

PARIF

DAA/CELL or ~EXTOH

GND

VGG

DV1TP

CLKOUT

NCNCNCNCNC

RINGD

NVMDATA

GSMRXD

~CELBSY/RXDCLK

CELCLK/GSMINP0/~SCPIRQ

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

128

127

126

125

124

123

122

121

120

119

118

117

116

115

114

113

112

111

110

109

108

107

106

105

104

103

1156F3-5 PO-MCU-Par-128T

NCNCGNDNCNCNCNCNCNCNCNCNCNCNCNCNCPG3

PG2

PG1

PG0

GND

HINT

~WKRESOUT

A18/~SCPSEL

A17

~RAMSEL

Cellular
GSM
RCDSVD
Firmware option

Figure 3. MCU Pin Signals - Parallel Host Interface - 128-Pin TQFP

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

12

Conexant

Doc. No. 100444A

Proprietary Information

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

102

101

100

99

98

97

96

95

94

93

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

~ROMSEL

~DPSEL

A16

A15

A14

A13

A12

A11

A10

A9

A8

VDD

A7

A6

A5

A4

A3

A2

A1

A0

TDI

TDO

TMS

TRSTP

TCK

GND

D7

D6

D5

D4

D3

D2

D1

D0

~TST

NVMCLK/TXDCLK

GSMTXD

DAA/GSM

~O

E

~W

E

M

RD

Y

SPKR

IN

RESET

~M

R

ES

PO

R

_R

C

SPKRO

U

T

~IN

PACK

~IR

EQ

R

INT_RC

R

ING

IN

~STSC

HG

~W

R

ITE

~R

EAD

~C

H

2C

S

~IR

EQ

2

~PW

R

D

W

N

2

PD4

G

ND

XTLI

VDD

XTLO

G

N

D

~RESO

U

T2

PD

3

H

D

0

H

D1

H

D2

H

D

3

H

D

4

H

D5

H

D

6

H

D

7

~W

AIT

~N

M

I

H

A0

H

A1

HA2

~IOWR

~IORD

DPIRQ

~RLY1/CTRL0

~RLY2/CTRL1/CTRL0

~RLY3/CELBSY

~RLY4

LCS

CELDATA

PARIF

DAA/CELL or EXTOH

GND

VGG

DV1TP

CLKOUT

~CE2

A0OUT

~IO16E

~IOIS16

~DISEEP

RINGOUT

NVMDATA

GSMRXD

~CELBSY/RXDCLK

CELCLK/GSMINP0/~SCPIRQ

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

128

127

126

125

124

123

122

121

120

119

118

117

116

115

114

113

112

111

110

109

108

107

106

105

104

103

1156F3-6 PO-MCUP-128T

~REG

~CE1

GND

HA11

HA10

HA9

HA8

HA7

HA6

HA5

HA4

HA3

HA15

HA14

HA13

HA12

PG3

PG2

PG1

PG0

GND

HINT

READY

A18/~SCPSEL

A17

~RAMSEL

Cellular
GSM
RCDSVD
Firmware option

Figure 4. MCUP Pin Signals - PC Card Interface - 128-Pin TQFP

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

13

Proprietary Information

MDP (P9373) Hardware Pins and Signals

General

The major functional application signals are
summarized below.

System Control and Status

The following discrete signals are used by the host to
control and monitor MDP operation:

•

Wakeup Reset (WKRES#); input

•

Interrupt Request for MDP Interface (IRQ); output

•

Raw Ring (SSD_RING#); output

•

Ring Wake Reset (SSD_RINGWAKE#); output

•

SmartDAA Interrupt for SmartDAA Interface
(SSD_INT); output

Digital Speaker Interface

The following output is used for audible call progress
or carrier monitoring in Data/Fax mode only where
sound quality is not important.

•

Digital Speaker Output (DSPKOUT); output

Host Parallel Bus Interface

The parallel address, data, and control signals are:

•

Address Lines (A[6:0]); input

•

Data Lines (D[7:0]), input/output

•

Chip Select (CS#); input

•

Read Enable (READ#); input

•

Write Enable (WRITE#); output

Host Serial Data Interface

The serial data and clock signals are:

•

Receive Data (RXD); output

•

Receive Data Clock (RXCLK); output

•

Transmit Data (TXD); input

•

Transmit Data Clock (TXCLK); output

Host Serial Voice Interface (S models)

The serial data and clock signals are:

•

Serial Data Out (SI_DD); output

•

Serial Data In (SI_DU); input

•

Serial Shift Clock (SI_CLK); input

•

Sample Shift Clock (SI_FRAME); input

LSD Interface (Through DIB)

The DIB interface signals are:

•

Clock and Power Positive (PWRCLKP); output

•

Clock and Power Negative (PWRCLKN); output

•

Data Positive (DIB_DATAP); input/output

•

Data Negative (DIB_DATAN); input/output

VC Interface

The VC interface signals are:

•

Sleep (IASLEEP); output

•

Master Clock (M_CLK); output

•

Voice Serial Clock (V_SCLK); output

•

Voice Serial Control (V_CTRL); output

•

Voice Serial Frame Sync (V_STROBE); input

•

Voice Serial Transmit Data (V_TXSIN); output

•

Voice Serial Receive Data (V_RXOUT); input

MDP Signal Interface and Pin Assignments

The MDP (P9373) 100-pin TQFP hardware interface
signals are shown in Figure 5.

The MDP (P9373) 100-pin TQFP pin signals are
shown in Figure 6.

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

14

Conexant

Doc. No. 100444A

Proprietary Information

CLKIN

XCLK
YCLK

D0 (PC0)
D1 (PC1)
D2 (PC2)
D3 (PC3)
D4 (PC4)
D5 (PC5)
D6 (PC6)
D7 (PC7)
A0 (PD0)
A1 (PD1)
A2 (PD2)
A3 (PD3)
A4 (PD4)
A5
A6
CS# (PD5)
WRITE# (PD6)
READ# (PD7)
IRQ (PB5)

RESET#
WKRES#
SSD_RING#
SSD_RINGWAKE#
SSD_INT

TXD (PA2)
TXCLK (PA3)
RXD (PA6)
RXCLK (PA7)
GP00

SI_FRAME (SA4CLK)
SI_CLK (SR4CLK)
SI_DU (SR8IN)
SI_DD (SR8OUT)

LPO_RC

DDC

48

14
15

67
66
65
64
62
61
60
59
53
52
51
50
49
25
40
55
56
57
35

96
27
95

9

70

36
42
38
44
33

24
23
20
34

84

94

MCU

PARALLEL BUS INTERFACE

DSPKOUT

PWRCLKP

PWRCLKP

DIB_DATAP

DIB_DATAN

IASLEEP

M_CLK (PB0)

V_SCLK (SR2CLK)

V_STROBE (SA2CLK)

V_TXSIN (SR3OUT)

V_RXOUT (SR3IN)

V_CTRL (SR2IO)

PLLVDD

PLLVSS

TESTP

XYCNT

M_CTRL (SR1IO)

M_RXOUT (SR4IN)

M_TXSIN (SR4OUT)

V_CLKIN (IA2CLK)

M_CLKIN (IA1CLK)

M_STROBE (SA1CLK)

PB1
PF6
PF7

GP01

RESERVED
RESERVED
RESERVED
RESERVED

NC
NC
NC
NC

VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD

VGG

GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND

87

92

93

90

89

97
5
3
1
4
2
6

98

99

18
19

100
12
81
29
86
82
78
28
43
30
16
76
77
79
71
72
74
75

7
17
32
45
46
58
69
83

26

8
10
11
13
21
22
31
37
39
41
47
54
63
68
73
80
85
88
91

100444A, fig5, mdp_his_p93_100t

MODEM DATA

PUMP

(MDP)
P9373

100-PIN TQFP

VOICE CODEC

(VC)

20437
32-PIN TQFP
(OPTIONAL)

+3.3V

+3.3V

DIGITAL SPEAKER OUTPUT

DIGITAL
ISOLATION
BARRIER
(DIB)

NC

+5V/+3.3V

MCU

SERIAL VOICE

INTERFACE

MCU

SERIAL DATA AND CLOCK

INTERFACE

MCU

1uF

MCU:CLKOUT

NC

SLEEP
M_CLKIN
M_SCK
M_STROBE
M_TXSIN
M_RXOUT
M_CNTRLSIN

RCDSVD: XTLI (OPTIONAL)

NC

10K

+3.3V

53.6K

VCC

Figure 5. MDP (P9373) 100-Pin TQFP Hardware Interface Signals

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

15

Proprietary Information

MD248F4 PO-HSD-100TQFP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

100

99

98

97

96

95

94

93

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

V_STROBE (SA2CLK)

V_RXOUT (SR3IN)

V_SCLK (SR2CLK)

V_TXSIN (SR3OUT)

M_CLK (PB0)

V_CTRL (SR2IO)

VDD

GND

SSD_RINGWAKE#

GND

GND

M_RXOUT (SR4IN)

GND

XCLK

YCLK

RESERVED

VDD

TESTP

XYCNT

SI_DU (SR8IN)

GND

GND

SI_CLK (SR4CLK)

SI_FRAME (SA4CLK)

A5

NC

NC

GND

NC

NC

SSD_INT

VDD

GND

D0 (PC0)

D1 (PC1)

D2 (PC2)

D3 (PC3)

GND

D4 (PC4)

D5 (PC5)

D6 (PC6)

D7 (PC7)

VDD

READ# (PD7)

WRITE# (PD6)

CS# (PD5)

GND

A0 (PD0)

A1 (PD1)

A2 (PD2)

M_CTRL (SR1IO)

PLLVSS

PLLVDD

IASLEEP

RESET#

SSD_RING#

DCC

PWRCLKN

PWRCLKP

GND

DIB_DATAP

DIB_DATAN

GND

DSPKOUT

M_CLKIN (IA1CLK)

GND

LPO_RC

VDD

M_STROBE (SA1CLK)

M_TXSIN (SR4OUT)

GND

RESERVED

PB1

RESERVED

RESERVED

VGG

WKRES#

PF6

V_CLKIN (IA2CLK)

GP01

GND

VDD

GP00

SI_DD (SR8OUT)

IRQ (PB5)

TXD (PA2)

GND

RXD (PA6)

GND

A6

GND

TXCLK (PA3)

PF7

RXCLK (PA7)

VDD

VDD

GND

CLKIN

A4 (PD4)

A3 (PD3)

P9373

Figure 6. MDP (P9373) 100-Pin TQFP Pin Signals

SmartACFL



V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

16

Conexant

Doc. No. 100444A

Proprietary Information

LSD Hardware Pins and Signals

MDP Interface (Through DIB)

The DIB interface signals are:

•

Clock (CLK); input

•

Digital Power (PWR+); input power

•

Digital Ground (DGND); digital ground

•

Data Positive (DIB_P); input

•

Data Negative (DIB_N); input

Telephone Line Interface

The telephone line interface signals are:

•

RING AC Coupled (RAC1); input

•

TIP AC Coupled (TAC1); input

•

Electronic Inductor Resistor (EIR); output

•

TIP and RING DC Measurement (TRDC); input

•

DAC Output Voltage (DAC); output

•

Electronic Inductor Capacitor (EIC)

•

Electronic Inductor Output (EIO)

•

Electronic Inductor Feedback (EIF)

•

Resistive Divider Midpoint (DCF)

•

Transmit Analog Output (TXA); output

•

Receive Analog Input (RXI); input

•

Receiver Gain (RXG); output

•

MOV Enable (MOVEN); output

•

World-wide Impedance 0 (ZW0); input

•

US Impedance 0 (ZUS0); input

•

Transmit Feedback (TXF); input

•

Transmit Output (TXO); output

LSD Signal Interface and Pin Assignments

The LSD (20463) 32-pin TQFP hardware interface
signals are shown by major interface in Figure 7.

The LSD (20463) 32-pin TQFP pin signals are
shown in Figure 8.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

17

Proprietary Information

CLK

PWR+

AVDD

DVDD

DGND
AGND

DIB_P

DIB_N

27

31

24

26

25
23

28

29

RAC1
TAC1

EIR
EIC

DAC

TRDC

EIO

EIF

RXG

RXI

TXA

MOVEN (GPIO1)

ZW0

ZUS0

TXO

TXF

DCF

VREF

VC

RBIAS

GPIO2

POR

9
11

15
2
6
5
21
22

4
3
18

32

14
17
20
19

16

8

7

13

1

30

100444A_HIS_20463_Smart ACFL

LINE SIDE DEVICE

(LSD)
20463

32-PIN TQFP

Electronic

Inductor,
Offhook,

Pulse Dial,

and TIP and

RING VI
Control

AGND_LSD

RJ11
Jack

Safety

and
EMI

Protection

AGND_LSD

TIP
RING

Ring In

Filter

AGND_LSD

0.1uF

0.1uF

10 uF

AGND_LSD

Echo

Cancellation

and

Receiver

Impedance

Matching

and

Transmitter

Pulse Dial

Voltage

Protection

(Country
Specific)

GND_LSD

1K

10 pF

0.1uF 0.1uF

1
K

1
K

AGND_LSD

DIGITAL

ISOLATION

BARRIER

(DIB)

PWRCLKP

PWRCLKN

DIB_DATAP

DIB_DATAN

DATA

CHANNEL

10 pF

10 pF

POWER AND

CLOCK

CHANNEL

10

NC

143K

AGND_LSD

VDD

NC

10uF

Figure 7. LSD (20463) 32-Pin TQFP Hardware Interface Signals

MD245F6 PO-20463-32T

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

GPIO2

EIC

RXI

RXG

TRDC

DAC

VC

VREF

AVDD

AGND

EIF

EIO

TXO

TXF

TXA

ZUS0

RAC1

RAC2

TAC1

TAC2

RBIAS

ZW0

EIR

DCF

MOVEN (GPIO1)

PWR+

POR

DIB_N

DIB_P

CLK

DVDD

DGND

20463

Figure 8. LSD (20463) 32-Pin TQFP Pin Signals

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18

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Proprietary Information

VC (20437) Hardware Pins and Signals
(S Models)

General

Microphone and analog speaker interface signals, as
well as telephone handset/head interface signals are
provided to support functions such as speakerphone
mode, telephone emulation, microphone voice
record, speaker voice playback, and call progress
monitor.

Speakerphone Interface

The following signals are supported:

•

Speaker Out (M_SPKR_OUT); analog output ­Should be used in speakerphone designs where
sound quality is important.

•

Microphone (M_MIC_IN); analog input

Telephone Handset/Headset Interface

•

Telephone Input (M_LINE_IN), input (TELIN) –
Optional connection to a telephone handset a
telephone handset interface circuit.

•

Telephone output (M_LINE_OUTP); output
(TELOUT) - Optional connection to a telephone
handset interface circuit.

•

Center Voltage (VC_HANDSET); output reference
voltage.

MDP Interface

The following interface signals are supported:

•

Reset (POR); input

•

Sleep (SLEEP); input

•

Master Clock (M_CLKIN); input.

•

Serial Clock (M_SCK); output.

•

Control (M_CNTRLSIN); input

•

Serial Frame Sync (M_STROBE); output.

•

Serial Transmit Data (M_TXSIN); input.

•

Serial Receive Data (M_RXOUT); output.

VC Interface Signals and Pin Assignments

The VC (20437) 32-pin TQFP hardware interface
signals are shown by major interface in Figure 9.

The VC (20437) 32-pin TQFP pin signals are shown
in Figure 10.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL

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Conexant

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Proprietary Information

MD248F7 20437-HIS

VOICE CODEC

(VC)

20437

32-PIN TQFP

AUDIO
CIRCUIT

NC

SPK OUT

MIC

TELIN
TELOUT

MODEM

DATA PUMP

(MSD)

+3.3V

VAA (+3.3V)

1

4
19
21
23
20
22
18

17
25

5

28
26

6
27

IASLEEP

DRESET#

M_CLK

V_SCLK

V_STROBE

V_TXSIN

V_RXOUT

V_CTRL

SLEEP
POR
M_CLKIN
M_SCK
M_STROBE
M_TXSIN
M_RXOUT
M_CNTRLSIN

VDD
VDD

MAVDD

VSS
SET3V_BAR2

MAVSS
VSUB

M_DIG_SPEAKER

M_MIC_IN

M_SPKR_OUT

M_LINE_IN

M_LINE_OUTP

M_LINE_OUTM

VREF

VC

M_MIC_BIAS

M_RELAYA
M_RELAYB

M_ACT90

M_1BIT_OUT

D_LPBK_BAR

NC
NC
NC

2

13
3

14
9

10

11

12

15
24
16
29
30
31
7
8
32

0.1

AGND

10

0.1 10

NC

HANDSET
INTERFACE

NC

AGND

GND

FERRITE

FERRITE

VC_HAND

Figure 9. VC (20437) 32-Pin TQFP Hardware Interface Signals

MD241F8 PO-20437_32T

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

SLEEP

M_DIG_SPEAKER

M_SPKR_OUT

POR

MAVDD

MAVSS

NC

NC

M_RELAYA

M_STROBE

M_RXOUT

M_SCK

M_TXSIN

M_CLKIN

M_CNTRLSIN

VDD

M_LINE_OUTP

M_LINE_OUTM

VREF

VC

M_MIC_IN

M_LINE_IN

M_MIC_BIAS

M_RELAYB

NC

D_LPBK_BAR

M_1BIT_OUT

M_ACT90

VSS

VSUB

SET3V_BAR2

VDD

20437

Figure 10. VC (20437) 32-Pin TQFP Pin Signals

SmartACFL

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Proprietary Information

Electrical and Environmental Specifications

Table 2. Operating Conditions

Parameter Symbol Limits Units

Supply Voltage V

DD

MCU, MDP, VC: +3.0 to +3.6 VDC

Operating Temperature Range T

A

-0 to +70 °C

Table 3. Absolute Maximum Ratings

Parameter Symbol Limits Units

Supply Voltage V

DD

-0.5 to +4.6 VDC

Input Voltage V

IN

-0.5 to (VIO +0.5)* VDC

Storage Temperature Range T

STG

-55 to +125 °C

Analog Inputs V

IN

-0.3 to (VAA + 0.5) VDC

Voltage Applied to Outputs in High Impedance (Off) State V

HZ

-0.5 to (VIO +0.5)* VDC

DC Input Clamp Current I

IK

±20 mA

DC Output Clamp Current I

OK

±20 mA

Static Discharge Voltage (25°C) V

ESD

±2500 VDC

Latch-up Current (25°C) I

TRIG

±400 mA

* VIO = +3.3V ± 0.3V or +5V ± 5%.

Table 4. Current and Power Requirements

Mode

Typ Current

(Ityp) (mA)

Max Current

(Imax) (mA)

Typ Power

(Ptyp) (mW)

Max Power

(Pmax) (mW)

Notes

MCU (L2702-xx)

Normal Mode TBD TBD TBD TBD f = 28.224 MHz

Sleep Mode TBD TBD TBD TBD f = 28.224 MHz

Stop Mode TBD TBD TBD TBD f = 0 MHz

MDP (P9373)

Normal Mode TBD TBD TBD TBD f = 28.224 MHz

Sleep Mode TBD TBD TBD TBD f = 28.224 MHz

Stop Mode TBD TBD TBD TBD f = 0 MHz

LSD (20463)

Normal Mode: Off-hook, normal data
connection

TBD TBD TBD TBD

Normal Mode: On-hook, idle, waiting for ring TBD TBD TBD TBD

Low Power Mode TBD TBD TBD TBD

VC (20437)

Normal Mode TBD TBD TBD TBD

Sleep Mode TBD TBD TBD TBD

Stop Mode TBD TBD TBD TBD

1. Operating voltage: VDD = +3.3V ± 0.3V.

2. Test conditions: VDD = +3.3V for typical values; VDD = +3.6V for maximum values.

3. Input Ripple ≤ 0.1 Vpeak-peak.

4. f = Internal frequency.

5. Stop Mode is the same as Sleep Mode with clocks turned off.

6. Typical current (Ityp) estimated; Max current estimated from Ityp: Imax = Ityp * 1.1.

7. Typical power (Ptyp) computed from Ityp: Ptyp = Ityp * 3.3V; Max power (Pmax) computed from Imax: Pmax = Imax * 3.6V.

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



Doc. No. 100444A

Conexant

21

Proprietary Information

Package Dimensions

The package dimensions are shown in Figure 11 (128-pin TQFP), Figure 12 (100-pin TQFP) and Figure 13
(32-pin TQFP).

e

b

D

D1

E1

DETAIL A

DETAIL A

A1

L1

c

L

A

E1

E2

E

D2

D1

A2

Millimeters

0.05

21.75

15.75

0.5

0.17

0.11

1.6 MAX

0.15

1.4 REF

22.25

20.0 REF

18.5 REF

16.25

14.0 REF

12.5 REF

0.75

1.0 REF

0.50 BSC

0.27

0.17

0.08 MAX

0.0020

0.8563

0.6201

0.0197

0.0067

0.0043

A

A1

A2

D

D1

D2

E

E1

E2

L

L1

e

b

c

Coplanarity

Min.

Max.

Min.

Max.

Inches

Dim.

Ref: 128-PIN TQFP (GP00-D264)

* Metric values (millimeters) should be used for
PCB layout. English values (inches) are
converted from metric values and may include
round-off errors.

0.0630 MAX

0.0059

0.0551 REF

0.8760

0.7874 REF

0.7283 REF

0.6398

0.5512 REF

0.4921 REF

0.0295

0.0394 REF

0.0197 BSC

0.0106

0.0067

0.0031 MAX

PD-TQFP-128 (040395)

PIN 1
REF

Figure 11. Package Dimensions - 128-Pin TQFP

SmartACFL

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22

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Doc. No. 100444A

Proprietary Information

DETAIL A

COPLANARITY = 0.08 MAX.

0.60

+0.15, -0.10

0.14 ± .03

16.00 ± 0.15

16.00 ± 0.15

14.00 ± 0.05

12.00 REF

12.00 REF

14.00 ± 0.05

PIN 1

REF

13.87 ± 0.05

14.00 ± 0.05

1.00 REF

1.00 ± .05

0.50 REF

13.87 ± 0.05

14.00 ± 0.05

0.500 BSC

0.22 ± 0.05

Ref. 100-PIN TQFP (GP00-D530)

PD-TQFP-100-D530 (032699)

DETAIL A

0.10 ± .05

Figure 12. Package Dimensions - 100-Pin TQFP

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL



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Conexant

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Proprietary Information

DETAIL A

A1

L1

c

L

A

D1

A2

Millimeters

0.05

8.75

0.5

0.30

0.13

1.6 MAX

0.15

1.4 REF

9.25

7.0 REF

5.6 REF

0.75

1.0 REF

0.80 BSC

0.40

0.19

0.10 MAX

0.0020

0.3445

0.0197

0.0118

0.0051

A

A1

A2

D

D1

D2

L

L1

e

b

c

Coplanarity

Min.

Max.

Min.

Max.

Inches

Dim.

Ref: 32-PIN TQFP (GP00-D262)

* Metric values (millimeters) should be used for
PCB layout. English values (inches) are
converted from metric values and may include
round-off errors.

0.0630 MAX

0.0059

0.0551 REF

0.3642

0.2756 REF

0.2205 REF

0.0295

0.0394 REF

0.0315 BSC

0.0157

0.0075

0.004 MAX

PD-TQFP-32 (040395)

DETAIL A

D1

e

b

D

D2

D1

D1

D

D2

PIN 1
REF

Figure 13. Package Dimensions - 32-Pin TQFP

Further Information:

[email protected]
1-800-854-8099 (North America)
33-14-906-3980 (International)

Web Site

www.conexant.com

World Headquarters

Conexant Systems, Inc.
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P.O. Box C
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Phone: [phone]
Fax: [phone]

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Phone: [phone]
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Pte. Ltd.
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