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Integrated V.90/K56flex/V.34/V.32bis Modem Device Sets
for Desktop Applications
The Conexant RC56D, RC336D, and RC144D Modem
Device Set families support data/fax,
voice/TAM/telephony extensions, V.80 synchronous
access mode, host-DSVD, and optional speakerphone,
AudioSpan, and on-board DSVD functions depending
upon model (Table 1).
The modem supports the following primary data
modulations: ITU-T V.90/K56flex (RC56), V.34 (RC56
and RC336) and V.32bis. Otherwise, the modems are
identical within like models, e.g., SP models operate the
same. Unless otherwise noted, descriptions in this
document apply to all modem families and models.
The modem is designed to operate with dial-up telephone
lines in the U.S. and world-wide.
Low profile, small PQFP packages make this device set
ideal for desktop applications using parallel host or serial
DTE interface.
The device set consists of an 8-bit microcontroller (MCU)
in an 80-pin PQFP, a modem data pump (MDP) in a 100pin PQFP, and an optional Plug and Play (PnP) ISA Bus
Interface Device in 80-pin PQFP. The SVD model is the
same as the SP model with the addition of an RCDSVD
Speech Codec Processor (SCP) in a 100-pin PQFP to
support DSVD.
The modem supports fax Group 3 send and receive rates
up to 33.6 kbps and T.30 protocol.
In voice/TAM mode, enhanced 2-bit or 4-bit per sample
ADPCM coding and decoding at 7200 Hz sample rate
allows efficient digital storage of voice/audio. This mode
supports applications such as digital telephone answering
machine (TAM), voice annotation, and recording from and
playback to the telephone line. Other voice/TAM functions
using handset or headset are supported by SP and SVD
models. Extension pickup /remote hangup detection and
line-in-use detection telephony extensions are also
supported.
SP and SVD models support position independent, fullduplex speakerphone (FDSP) operation using microphone
and speaker, as well as other voice/TAM applications
using handset or headset.
SP and SVD models also support AudioSpan (analog
simultaneous audio/voice and data) operation with a data
rate of 4.8 kbps with audio.
SVD models, using the optional RCDSVD SCP device,
support hardware-based (on-board) V.70 DSVD (digital
simultaneous voice and data) with speech coding per ITUT interoperable G.729 and G.729 Annex A with
interoperable G.729 Annex B.
Downloadable architecture supports downloading of
modem firmware from the host/DTE to the MCU and,
transparently to the host/DTE, the downloading of MDP
code modules from the MCU.
Host-based DSVD is supported in all models, however,
the host PC must supply full-duplex sound support,
typically to a microphone/speaker, such as provided by
Conexant WaveArtist devices or a sound card.
The modem operates by executing firmware from installed
1Mbit (128k x 8) RAM and 2Mbit (256k x 8) ROM/flash
ROM. The RC336 and RC144 can alternatively use 32k x
8 RAM and 1Mbit or 2Mbit ROM/flash ROM.
A common PC board design can support data/fax, V.80,
voice/TAM/telephony extensions, speakerphone,
AudioSpan, and host- or on-board DSVD operation
depending on the installed modem and optional PnP and
RCDSVD devices.
In V.90/K56flex mode (RC56), the modem can receive
data at speeds up to 56 kbps from a digitally connected
V.90- or K56flex-compatible central site modem. Taking
advantage of the PSTN which is primarily digital except
for the client modem to central office local loop,
V.90/K56flex modems are ideal for applications such as
remote access to an Internet Service Provider (ISP), online service, or corporate site. The modem can send data
at speeds up to V.34 rates.
In V.34 data mode (RC56 and RC336), 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-error-correcting mode is
also supported.
In V.32 bis mode, the modem operates at line speeds up
to 14.4 kbps.
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Accelerator kits and reference designs are available to
minimize application design time and costs. PC-based
“ConfigurACE™ II for Windows” software allows MCU
firmware to be customized.
Features
• Downloadable MCU firmware from the host/DTE and
downloadable MDP code modules from the MCU
• Data modem
− ITU-T V.90 and K56flex (RC56 models)
− V.34 (33.6 kbps) (RC56 and RC336 models)
− V.32 bis, V.32, V.22 bis, V.22, V.23, and V.21
− Bell 212A and 103
− V.42 LAPM, MNP 2-4, and MNP 10 error correction
− V.42 bis and MNP 5 data compression
− MNP 10EC™ enhanced cellular performance
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Table 1. Modem Models and Functions
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Information provided by Conexant Systems, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Conexant for its use, nor any
infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of
Conexant other than for circuitry embodied in Conexant products. Conexant reserves the right to change circuitry at any time without notice. This document is
subject to change without notice.
K56flex is a trademark of Conexant Systems, Inc. and Lucent Technologies.
Conexant, “What's Next in Communications Technologies”, MNP 10EC, and ConfigurACE are trademarks of Conexant Systems, Inc.
Product names or services listed in this publication are for identification purposes only, and may be trademarks or registered trademarks of their respective
companies. All other marks mentioned herein are the property of their respective owners.
©1999, Conexant Systems, Inc.
Printed in U.S.A.
All Rights Reserved.
2
Conexant
MD211
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Features (Continued)
• Fax modem send and receive rates up to 33.6 kbps
− V.34 fax, V.17, V.29, V.27 ter, and V.21 channel 2
• V.80 synchronous access mode supports host-based
communication protocols
• World-class operation
− Call progress
− Blacklisting
− Multiple country support
• Voice/TAM/telephony extensions mode
• Handset support (SP and SVD models)
• Full-duplex speakerphone (FDSP) mode (SP and SVD
models)
− Acoustic and line echo cancellation
− Microphone gain and muting
− Speaker volume control and muting
• AudioSpan simultaneous audio/voice and data (SP and
SVD models)
− ITU-T V.61 modulation (4.8 kbps data with audio)
− Handset, headset, or microphone/speaker
• ITU-T V.70 DSVD using the RCDSVD SCP (SVD models)
− ITU-T interoperable G.729 and G.729 Annex A with
interoperable G.729 Annex B
− Voice/silence detection and handset echo cancellation
− Robust DSVD timing recovery
− Handset, headset, or half-duplex speakerphone
• Host-based DSVD support with V.70 software drivers for
Windows 95
• Communication software compatible AT command sets
• NVRAM directory and stored profiles
• Flash memory support
• Internal phase-locked loop (PLL)
• Built-in host/DTE interface with speeds up to 230.4 kbps
− Parallel 16550A UART-compatible interface
− Serial ITU-T V.24 (EIA/TIA-232-E)
• Supports Conexant PnP ISA Bus Interface Device
• Supports Serial PnP interface per Plug and Play External
COM Device Specification, Rev 1.00
• Flow control and speed buffering
• Automatic format/speed sensing
• Serial sync/async data; parallel async data
• Caller ID and distinctive ring detect
• Packages:
− MCU: 80-pin PQFP
− MDP: 100-Pin PQFP
− PNP: 80-Pin PQFP
− RCDSVD SCP: 100-pin PQFP
• +5V operation
• Sleep Mode
Description
General
The modem device set, consisting of separate
microcontroller (MCU), modem data pump (MDP), optional
Plug and Play (PnP) ISA Bus Interface Device, and
optional RCDSVD Speech Codec Processor (SCP)
devices, provides the processing core for a complete
modem design.
MD211
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For data/fax/V.80/voice/TAM/speakerphone/hostDSVD/AudioSpan operation, only the microcontroller
(MCU) and modem data pump (MDP) devices are
needed. The OEM adds an MCU crystal, discrete
components, and a telephone line/telephone/voice/TAM/telephony extension interface circuit to complete the
modem system. Optional on-board DSVD operation is
supported with addition of the RCDSVD Speech Codec
Processor (SCP) device to an SP model (included in SVD
models). Table 1 shows the supported functions by
product family.
Dialing, call progress, V.80, telephone line interface,
voice/TAM, speakerphone, AudioSpan, and DSVD
functions are supported and controlled through the AT
command set.
Connection to the host/DTE is supported by serial DTE
interface (Figure 1) or parallel host interface (Figure 2)
depending on installed modem firmware.
For U.S. operation, the modem can operate with a 1-relay
data/fax/TAM DAA interface (Figure 3) or a 2-relay
data/fax/TAM/Speakerphone DAA interface (Figure 4).
Data/Fax Modes
In V.90/K56flex data modem mode (RC56), the modem
can receive data from a digital source using a V.90- or
K56flex-compatible central site modem at line speeds up
to 56 kbps. Asymmetrical data transmission supports
sending data at speeds up to V.34 rates. This mode can
fallback to full-duplex V.34 mode.
In V.34 data modem mode, the modem can operate in 2wire, full-duplex, asynchronous modes at line rates up to
33.6 kbps. 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 33.6 kbps to 300
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 fax modem mode, the modem can operate in 2-wire,
half-duplex, synchronous mode and can support Group 3
facsimile send and receive speeds of 33600, 31200,
28800, 26400, 24000, 21600, 19200, 16800, 14400,
12000, 9600, 7200, 4800, and 2400 bps. 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 at speeds up to 33.6
kbps with automatic rate adaption. Fax data transmission
and reception performed by the modem are controlled and
monitored through the EIA/TIA-578 Fax Class 1, T.31 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 the DTE is flow
controlled by XON/XOFF and RTS/CTS.
Conexant
3
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,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
MODEM DEVICE SET
SERIAL
DTE/
INDICATOR
INTERFACE
256 x 8
SERIAL
NVRAM
(OPTIONAL)
MODEM
DATA PUMP
(MDP)
[100-PIN PQFP]
MICRO
CONTROLLER
UNIT
(MCU)
[80-PIN PQFP]
RCDSVD
SPEECH
CODEC
PROCESSOR
(SCP)
[R6715-14,
100-PIN PQFP]
(OPTIONAL)
TELEPHONE
LINE/
TELEPHONE
HANDSET/
TELEPHONY
EXTENSIONS/
AUDIO
INTERFACE
CIRCUIT
TELEPHONE
LINE
TEL HANDSET
HEADPHONE/
SPEAKER
MICROPHONE
RAM
1M (128K x 8)
[RC56/RC336/RC144]
or 32K x 8
[RC336/RC144]
ROM/FLASH ROM
2M (256K x 8)
[RC56/RC336/RC144]
or 1M (128K x 8)
[RC336/RC144]
1154F1-1 BD-Ser
Figure 1. Block Diagram - Serial DTE Interface
MODEM DEVICE SET
PARALLEL
HOST
BUS
INTERFACE
PnP
INTERFACE
DEVICE
[11596-21:
80-PIN PQFP]
(OPTIONAL)
MODEM
DATA PUMP
(MDP)
[100-PIN PQFP]
MICRO
CONTROLLER
UNIT
(MCU)
[80-PIN PQFP]
RCDSVD
SPEECH
CODEC
PROCESSOR
(SCP)
[R6715-14,
100-PIN PQFP]
(OPTIONAL)
256 x 8
SERIAL
NVRAM
(OPTIONAL)
TELEPHONE
LINE/
TELEPHONE
HANDSET/
TELEPHONE
EXTENSIONS/
AUDIO
INTERFACE
CIRCUIT
TELEPHONE
LINE
TEL HANDSET
HEADPHONE/
SPEAKER
MICROPHONE
RAM
1M (128K x 8)
[RC56/RC336/RC144]
or 32K x 8
[RC336/RC144]
ROM/FLASH ROM
2M (256K x 8)
[RC56/RC336/RC144]
or 1M (128K x 8)
[RC336/RC144]
1154F1-2 BD-Par
Figure 2. Block Diagram - Parallel Host Interface
4
Conexant
MD211
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EXTENSION
PICKUP/
REMOTE
HANG-UP
~EXTOH
RINGD
~OH
VC
TXA1
TXA2
RIN
HYBRD
&
XFRMR
SSI &
BRDGE
OH RELAY
SURG
PROT
RNG
DET
TEL LINE
MODEM
DEVICE SET
TEL HANDSET
TELEPHONE LINE/TELEPHONE HANDSET/
TELEPHONY EXTENSIONS INTERFACE CIRCUIT
MICM**
MICV*
MICROPHONE
BIAS
AMP/
SOUNDUCER
(OPTIONAL)
SPK
HEADPHONE
AUDIO/HEADPHONE
INTERFACE CIRCUIT
* SP OR SVD MODELS.
** NON-(SP OR SVD) MODELS.
1154F1-3 AIF 2R-US
Figure 3. 1-Relay Data/Fax/TAM DAA Interface (U.S.)
EXTENSION
PICKUP/
REMOTE
HANG-UP
~EXTOH
LCS
RINGD
~VOICE
~OH
VC
TXA1
TXA2
RIN
HYBRD
&
XFRMR
SSI &
BRDGE
SURG
PROT
OH RELAY
TEL LINE
CUR
SRC
TELOUT
HANDSET
HYBRID
TELIN
RNG
DET
MODEM
DEVICE SET
(SP/SVD MODELS)
VOICE
RELAY
TEL HANDSET
LCS
TELEPHONE LINE/TELEPHONE HANDSET/
TELEPHONY EXTENSIONS INTERFACE CIRCUIT
MICV
MICROPHONE
BIAS
AMP/
SOUNDUCER
(OPTIONAL)
SPK
HEADPHONE
AUDIO/HEADPHONE
INTERFACE CIRCUIT
1154F1-4 AIF 2R-US
Figure 4. 2-Relay Data/Fax/TAM/Speakerphone/AudioSpan DAA Interface (U.S.)
MD211
Conexant
5
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,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
Synchronous Access Mode (SAM)
V.80 synchronous access mode between the modem and
the host/DTE is provided for host-based communication
protocols, e.g., H.324 video conferencing applications.
Voice-call-first (VCF) before switching to a videophone
call is also supported.
World Class Operation
W-class functions support modem operation in multiple
countries. Additional capabilities are provided in addition
to the data modem functions in areas such as for dialing,
carrier transmit level, calling tone, call progress tone
detection, answer tone detection, blacklisting, relay
control. Country dependent parameters are programmable
by ConfigurACE II for Windows.
Voice/TAM Mode is supported by three submodes:
Online Voice Command Mode supports connection to
the telephone line or, for SP and SVD models, a
handset.
2.
Voice Receive Mode supports recording voice or
audio data input at the RIN pin, typically from the
telephone line or, for SP and SVD models, a
microphone/handset.
3.
Voice Transmit Mode supports playback of voice or
audio data to the TXA1/TXA2 output, typically to the
telephone line or, for SP and SVD models, a
speaker/handset.
Telephony Extension Operation
Extension pickup/remote hangup detection and line-in-use
detection are supported.
Speakerphone Mode (SP and SVD Models)
The speakerphone mode features an advanced
proprietary speakerphone algorithm which supports fullduplex voice conversation with both acoustic and line
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 speakerphone mode provides hands-free full-duplex
telephone operation under host control. The host can
separately control volume, muting, and AGC in
microphone and speaker channels.
AudioSpan Mode (SP and SVD Models)
AudioSpan provides full-duplex analog simultaneous
audio/voice and data over a telephone line at a data rate
of 4800 bps with audio using V.61 modulation. AudioSpan
can send any type of audio waveform, including music.
Data can be sent with or without error correction. The
audio/voice interface can be in the form of a headset,
handset, or a microphone and speaker. Handset echo
cancellation is provided.
6
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
signal on the RCDSVD LINEIN pin or MICIN pin for
passing to the modem controller in digitized form, and to
decode (decompress) 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 average bit rate significantly lower than 8.0 kbps.
DSVD decoder timing recovery algorithm compensates for
clock skew, asynchronous host-to-decoder data transfer
delay, intervening variable length data block transmission
delay, and loss of encoded speech data.
Voice/TAM Mode
Voice/TAM Mode features include enhanced ADPCM
compression/decompression, tone detection/generation
and call discrimination, concurrent DTMF detection, and
8-bit monophonic audio data encoding.
1.
DSVD Mode using RCDSVD SCP Device (SVD Models)
On-board DSVD operation requires installation of the
optional RCDSVD SCP (R6715-14).
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.
Host-Based DSVD
All modem models support host-based ITU-T V.70 DSVD.
The RCDSVD SCP (R6715) is not required. V.70 software
drivers for Windows 95 are provided which support a
speech/audio bit rate of significantly less than 8.0 kbps by
implementing interoperable G.729 and G.729 Annex A
with interoperable G.729 Annex B. The minimum PC
performance recommended for host-based DSVD is 150
MHz Pentium or equivalent. The V.70 software drivers
require about 10% of the MIPS available in a Pentium 150
MHz class PC. The host PC must supply full-duplex
sound support, typically to a microphone/speaker, such as
provided by Conexant WaveArtist devices or a sound
card. The modem is configured for host-based V.70 via
AT commands, and, when using a TAPI-compliant
communication application, the V.70 software drivers will
automatically run upon a successful V.70 connection.
Sleep Mode
Sleep Mode is supported in the modem device set and the
RCDSVD SCP device.
Modem Data Pump (MDP)
The data/fax/voice/optional speakerphone modem data
pump (MDP) is a Conexant R6764 packaged in a 100-pin
PQFP. The input clock frequency is 28.224 MHz and can
be supplied by the MCU. An internal phase locked loop
(PLL) circuit supports 56.448 MHz internal operation. The
operating voltage is +3.3V, which can be supplied by the
MCU, with +5V tolerant inputs. The MDP supports +5V
analog signal interface.
Conexant
MD211
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5&'5&'DQG5&'
In V.90/K56flex data modem mode (RC56), the MDP can
receive data from a digital source using a V.90- or
K56flex-compatible central site modem at line speeds up
to 56 kbps. Asymmetrical data transmission supports
sending data at speeds up to V.34 rates.
The PnP Device meets the requirements stated in the
Plug and Play ISA Specification Version 1.0a.
In V.34 data modem mode, the MDP can operate in 2wire, full-duplex, synchronous/asynchronous modes at
line rates up to 33.6 kbps. Using V.34 modulation to
optimize modem configuration for line conditions, the MDP
can connect at the highest data rate that the channel can
support from 33.6 kbps to 300 bps with automatic fallback.
Automode operation in V.34 is provided in accordance
with PN3320 and in V.32 bis in accordance with PN2330.
MCU Firmware
In fax modem mode, the MDP supports Group 3 facsimile
send and receive speeds of speeds of 33600, 31200,
28800, 26400, 24000, 21600, 19200, 16800, 14400,
12000, 9600, 7200, 4800, and 2400 bps.
ADPCM voice processing is supported.
Downloading of MDP code from the MCU is supported.
Microcontroller (MCU)
The MCU is a Conexant 8-bit microcomputer with pins to
support host/ DTE, MDP, voice/audio/speakerphone, and
optional RCDSVD SCP interface operation. The operating
voltage is +5V. The MCU provides a +3.3V output to
power the MDP.
The MCU connects to the host via a V.24 (EIA/TIA-232-E)
serial interface or a parallel microcomputer bus depending
on installed MCU firmware.
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 OEMsupplied RAM and ROM/flash ROM, and to the optional
RCDSVD SCP.
The MCU connects to an optional 256-byte serial
EEPROM over a dedicated serial interface.
The MCU is packaged in an 80-pin PQFP.
RCDSVD Speech Codec Processor (SCP) (Optional)
The RCDSVD SCP (R6715-14), required for on-board
DSVD operation, is packaged in a 100-pin PQFP. The
56.448 MHz crystal frequency is supplied by the MDP
XCLK output.
Plug and Play (PnP) ISA Bus Interface Device (PNP
Models)
The Conexant Plug and Play (PnP) ISA Bus Interface
Device (11596-21) is an 80-pin PQFP VLSI device that
supports automatic configuration of an Industry Standard
Architecture (ISA) modem card operating on a personal
computer (PC) with PnP capability. The PnP Device
supports host performance of the following functions when
interfacing with the PnP ISA card:
• Isolate the ISA card
• Read the card's resource data
• Identify the card and configure its resources
MD211
See Plug and Play (PnP) ISA Bus Interface Device Data
Sheet (Order No. MD144) for additional information.
MCU firmware performs processing of general modem
control, command sets, data modem, error correction and
data compression (ECC), fax class 1, fax class 2, DSVD,
AudioSpan, voice/audio/TAM/speakerphone, W-class,
V.80, and serial DTE/parallel host interface functions
according to modem models (Table 1).
Configurations of the modem firmware are provided to
support parallel host bus or serial DTE interface
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.
Supported Interfaces
The major hardware signal interfaces of the modem
device set are identified in Figure 1 (serial DTE interface)
and Figure 2 (parallel host bus interface).
Serial DTE Interface and Indicator Outputs
A V.24/EIA/TIA-232-E logic-compatible serial DTE
interface is selected by the Parallel/Serial Interface
(PARIF) input low. One serial transmit data input line
(~TXD), one serial receive data output line (~RXD), three
synchronous clocks (~XTCLK, ~RXCLK, and ~TXCLK),
four control input lines (~DTR, ~RTS, ~RDL, and ~AL),
and six status output lines (~CTS, ~DSR, ~RLSD, ~TM,
~RI, and ~DRSOUT) are supported.
Three dedicated indicator output lines (~DTRIND,
~TMIND, and ~AAIND) are also provided.
Parallel Host Bus Interface
A 16550A UART-compatible parallel host bus interface is
selected by Parallel/Serial Interface (PARIF) input high.
The interface signals are: eight bidirectional data lines
(HD0-HD7), three address input lines (HA0-HA2), three
control input lines (~HCS, ~HRD, and ~HWT), one status
output line (HINT), and a reset input line (-RESET).
NVRAM (Serial EEPROM) Interface
A 2-line serial interface to non-volatile RAM (NVRAM, i.e.
serial EEPROM) is supported. The interface signals are a
bidirectional data line (NVMDATA) and a clock output line
(NVMCLK). Data stored in NVRAM can take precedence
over the factory default settings. A 256-byte NVRAM can
store up to two user-selectable configurations and up to
four 32-digit dial strings.
External Bus Interface
The non-multiplexed external bus supports eight
bidirectional data lines (D0-D7) and 18 address output
lines (A0-A17). Read enable output (~READ), write
enable output (~WRITE), and four chip select output
(~ROMSEL, ~RAMSEL, ~DPSEL, and ~SCPSEL) lines
are also supported.
Conexant
7
5&'5&'DQG5&'
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
in AudioSpan modes. These lines connect voice
record/playback and AudioSpan audio to the local
handset.
The external bus connects to the MDP, the optional
RCDSVD SCP, and to OEM-supplied memory. The
memory is 1Mbit (128k x 8) SRAM and 2Mbit (256k x 8)
ROM/flash ROM, or for the RC336 and RC144, can
alternatively be 32k x 8 SRAM and 128k x 8 ROM/flash
ROM.
RCDSVD SCP Interface (SVD Models)
The Line In (LINEIN) and Line Out (LINEOUT) lines
connect DSVD audio to the local telephone handset.
Telephone Line/Telephone Interface
MCU. Relay control outputs to the line interface are
supported:
• ~RLY1: Off-hook (~OH)
• ~RLY2: Voice (~VOICE), if needed. Pulse (~PULSE) relay
function can be enabled by ConfigurACE II.
• ~RLY3: Mute (~MUTE), if needed, can be enabled by
ConfigurACE II.
• ~RLY4: Caller ID (~CALLID) if needed. The DAAs shown
in Figure 3 and Figure 4 support the Caller ID function
without use of a separate relay.
Ring signal (RINGD) and loop current sense (LCS) inputs
are supported.
Telephony extensions are supported by the Extension OffHook (~EXTOH) input.
MDP. A single-ended receive analog input (RIN) and a
differential transmit analog output (TXA1/TXA2) are
supported. A digitized speaker output (SPKMD) is
provided for call progress monitoring.
Hardware Interface Signals
The modem hardware interface signals are shown in
Figure 5 (serial DTE interface) and Figure 6 (parallel host
interface).
The MCU pin assignments for the 80-pin PQFP with serial
DTE interface are shown in Figure 7.
The MCU pin assignments for the 80-pin PQFP with
parallel host interface are shown in Figure 8.
The MDP pin assignments for the 100-pin PQFP are
shown in Figure 9.
The RCDSVD SCP pin assignments for the 100-pin PQFP
are shown in Figure 10.
Electrical and Environmental Specifications
The current and power requirements are listed in Table 2.
Speakerphone Interface (SP and SVD Models)
Microphone input (MICV) and a speaker output (SPKM)
lines connect to handset, headset, or a microphone and
speaker to support functions such as AudioSpan headset
and speakerphone modes, FDSP, telephone emulation,
microphone voice record, speaker voice playback, and
call progress monitor. The speaker output (SPKM) carries
the normal speakerphone audio or reflects the received
analog signals in the modem.
An input from the telephone microphone (TELIN) and an
output to the telephone speaker (TELOUT) are supported
8
Microphone input (MICIN) and speaker output (SPKP)
lines connect to the microphone and speaker to support
DSVD headset and speakerphone modes.
The absolute maximum ratings are listed in Table 3.
Additional Information
Additional information is described in the RC56D,
RC336D, and RC144D Designer’s Guide (Order No.
1154), the Plug and Play (PnP) ISA Bus Interface Device
Data Sheet (Order No. MD144), the RCDVSD Speech
Codec Processor Device Hardware Description (Order
No. 1087), and the AT Command Reference Manual
(Order No. 1199).
Conexant
MD211
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
5&'5&'DQG5&'
~XTCLK
DTE
SERIAL/
INDICATOR
INTERFACE
~TXCLK
~EXTOH
~RXCLK*
~RLY1 (~OH)
~TXD
~RLY2 (~VOICE)
~RXD
~RLY3 (~MUTE)
~CTS
~RLY4 (~CALLID)
~DSR
LCS
~RLSD
RINGD
~TM
~XTCLK
~RI
TDCLK
~DRSOUT
~RDCLK
~DTR
~TXD
~RTS
~DPRXD
~RDL
DPIRQ
~AL
MICRO
CONTROLLER
UNIT
(MCU)
~DTRIND
~TMIND
~AAIND
CLKOUT
TELEPHONE
LINE
TELEPHONE
LINE/
TELEPHONE
HANDSET/
AUDIO
INTERFACE
CIRCUIT
MODEM
DATA
PUMP
(MDP)
RIN
RXD
TXA1
IRQ
TXA2
MICROPHONE
HEADPHONE/
SPEAKER
CLKIN
VD3.3
VDD
~READ
~READ
~WRITE
~WRITE
A0-A17
A0-A4
TELEPHONE
HANDSET
TELIN*
TELOUT*
MICV*
D0-D7
D0-D7
~DPSEL
~DPSEL
RS0-RS4
SPKM
MICM**
RESET
CIRCUIT
~RESET
~CS
~ROMSEL
~RESET
~RAMSEL
DGND, AGND
NVRAM
(OPTIONAL)
VGG
NVMCLK
AVDD
~WKRES
VCC (+5V)
VAA
VCC (+5V)
VCC (+5V)
VCC (+5V)
XCLK
PARIF
MODEM
CRYSTAL
CIRCUIT
~RESET
~RES1
~RES2
NVMDATA
~RESET
XTLI
~WKRESOUT
XTLO
~SCPSEL
~CS
~SCPIRQ*
~IRQ1
VDD
DGND
XTLI
MICIN
A0-A4
SPKP
D0-D7
LINEIN
~READ
~WRITE
RCDSVD
SCP
(R6715)
LINEOUT
VDD
DGND, AGND
AVDD
VAA
EXTERNAL
BUS
VCC (+5V)
VCC (+5V)
VCC (+5V)
A0-A17
D0-D7
~READ
~WRITE
ROM/FLASH ROM
2M (256K x 8) [RC56/RC336/RC144]
1M (128K x 8) [RC336/RC144]
* SP OR SVD MODELS.
** NON-(SP OR SVD) MODELS.
~ROMSEL
A0-A16
D0-D7
~READ
RAM
1M (128K x 8) [RC56/RC336/RC144]
~WRITE
32K x 8 [RC336/RC144]
~RAMSEL
1154F3-1 IF Ser
Figure 5. Hardware Interface Signals - Serial DTE Interface
MD211
Conexant
9
5&'5&'DQG5&'
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
~EXTOH
~RLY1 (~OH)
~RLY2 (~VOICE)
~RLY3 (~MUTE)
~RLY4 (~CALLID)
LCS
RINGD
TELEPHONE
LINE
HD0-HD7
TELEPHONE
LINE/
TELEPHONE
HANDSET/
AUDIO
INTERFACE
CIRCUIT
HA0-HA2
MODEM
DATA
PUMP
(MDP)
~HCS
PARALLEL
HOST
BUS
INTERFACE
~HWT
RIN
~HRD
TXA1
DPIRQ
HINT
~RES
MICRO
CONTROLLER
UNIT
(MCU)
~RESET
NC
PARIF
IRQ
CLKOUT
MICROPHONE
HEADPHONE/
SPEAKER
TXA2
CLKIN
VD3.3
VDD
~READ
~READ
~WRITE
~WRITE
TELEPHONE
HANDSET
TELIN*
TELOUT*
MICV*
A0-A17
A0-A4
D0-D7
D0-D7
RS0-RS4
SPKM
MICM**
~DPSEL
NVRAM
(OPTIONAL)
MODEM
CRYSTAL
CIRCUIT
NVMDATA
~ROMSEL
NVMCLK
~RAMSEL
~DPSEL
~CS
~RES1
~RES2
DGND, AGND
~RESET
VGG
XTLI
AVDD
XTLO
~WKRES
VAA
VCC (+5V)
VCC (+5V)
VCC (+5V)
XCLK
VCC (+5V)
VDD
DGND
~WKRESOUT
~RESET
~SCPSEL
~CS
~SCPIRQ
~IRQ1
XTLI
MICIN
A0-A4
SPKP
D0-D7
LINEIN
~READ
~WRITE
RCDSVD
SCP
(R6715)
LINEOUT
VDD
DGND, AGND
AVDD
EXTERNAL
BUS
VAA
VCC (+5V)
VCC (+5V)
VCC (+5V)
A0-A17
D0-D7
~READ
~WRITE
ROM/FLASH ROM
2M (256K x 8) [RC56/RC336/RC144]
1M (128K x 8) [RC336/RC144]
~ROMSEL
* SP OR SVD MODELS.
** NON-(SP OR SVD) MODELS.
A0-A16
D0-D7
~READ
~WRITE
RAM
1M (128K x 8) [RC56/RC336/RC144]
32K x 8 [RC336/RC144]
~RAMSEL
1154F3-2 IF Par
Figure 6. Hardware Interface Signals - Parallel Host Interface
10
Conexant
MD211
5&'5&'DQG5&'
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
~TMIND
~WKRESOUT
~SCPSEL
A17
~RAMSEL
~ROMSEL
~DPSEL
A16
GND
~RLY2 (~VOICE)
~RLY1(~OH)
A15
A14
A13
A12
A11
A10
A9
A8
A7
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
A6
A5
A4
A3
A2
A1
A0
GND
GND
VDD
~EXTOH
PARIF
D7
D6
D5
D4
D3
D2
D1
D0
~DTRIND
RESERVED
RESERVED
~STPMODE
~DTR
~AL
~RTS
DPIRQ
GND
LCS
CLKOUT
RINGD
NVMDATA
~TXD
~TXCLK
~RXCLK/~SCPIRQ
~DPRXD
~RXD
NVMCLK
~TST
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
~RES
~NMI
~WRITE
~READ
~RLY3
~RLY4
PSC
VDD
XTLI
XTLO
VD3.3
GND
~DSR
~CTS
~RLSD
~DRSOUT
~AAIND
~RI
~TM
~RDL
1154F3-3 PO-MCU80F-Ser
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
HINT
~WKRESOUT
~SCPSEL
A17
~RAMSEL
~ROMSEL
~DPSEL
A16
GND
~RLY2 (~VOICE)
~RLY1(~OH)
A15
A14
A13
A12
A11
A10
A9
A8
A7
Figure 7. MCU Pin Signals - 80-Pin PQFP - Serial DTE Interface
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
A6
A5
A4
A3
A2
A1
A0
GND
GND
VDD
~EXTOH
PARIF
D7
D6
D5
D4
D3
D2
D1
D0
HA0
HA1
HA2
~STPMODE
~HCS
~HWT
~HRD
DPIRQ
GND
LCS
CLKOUT
RINGD
NVMDATA
RESERVED
RESERVED
~SCPIRQ
RESERVED
RESERVED
NVMCLK
~TST
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
~RES
~NMI
~WRITE
~READ
~RLY3
~RLY4
PSC
VDD
XTLI
XTLO
VD3.3
GND
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
1154F3-4 PO-MCU80F-Par
Figure 8. MCU Pin Signals- 80-Pin PQFP - Parallel Host Interface
MD211
Conexant
11
D0
NC
CLKIN
VDD
RESERVED
RESERVED
GP00
GND
87
86
85
84
83
82
81
D4
92
D1
D5
93
88
D6
94
89
D7
95
D3
RS0
96
D2
RS1
97
90
PLLVDD
98
91
PLLGND
GND
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
100
99
5&'5&'DQG5&'
RESERVED
RS2
1
80
IRQ
2
79
RINGD
RS3
3
78
~RI
RS4
~CS
4
77
RESERVED
76
XCLK
~WRITE
5
6
75
YCLK
~READ
7
74
RESERVED
~RDCLK
8
73
RESERVED
~WKRES
SR2CLK
9
72
RESERVED
10
71
VGG
~RLSD
11
12
70
69
RESERVED
TDCLK
TXD
13
68
VDD
RESERVED
14
67
RXD
RESERVED
GND
15
16
66
RESERVED
65
GND
~RES1
SR4OUT
17
64
XTCLK
18
63
VDD
SR3OUT
SR4IN
19
62
SR1IO
SLEEPO
27
54
VCLKIN/NC*
AVAA
28
53
VTXSIN/NC*
SPKR
TXA1
29
52
VSCLK/NC*
30
51
VRXOUT/NC*
SA2CLK
43
44
45
46
47
48
49
MSCLK
MRXOUT
MSTROBE
~RLYA
AGND
GND
VSTROBE/NC*
50
42
MTXSIN
41
MCNTRLSIN
MCLKIN
SPKMD
AGND
AVDD
40
VCNTRLSIN/NC*
TELOUT/NC*
39
55
37
38
26
MICM
IASLEEP
TELIN/NC*
36
56
~RES2
RESERVED
25
35
57
RIN
24
34
RESERVED
IA1CLK
AGND
33
58
MICV/NC*
23
32
SR2IO
22
60
59
31
21
TXA2
61
SR3IN
CLKOUT
SA1CLK
VREF
VC
20
RESERVED
MD212F5 PO-R6764-100P
* NC on non-SP models.
Figure 9. MDP Pin Signals - 100-Pin PQFP
12
Conexant
MD211
5&'5&'DQG5&'
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
NC
NC
NC
VSS
NC
NC
~EN85
NC
NC
NC
SR4OUT
NC
SR1IO
SA1CLK
IA1CLK
NC
NC
NC
NC
VSS
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
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
80
79
78
77
76
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
VSS
SR3IN
NC
VDD
NC
NC
XTLO
XTLI
~RESET
~SLEEPO
NC
NC
~IRQ
NC
VSS
NC
GPO4
GPO5
GPO6
GPO7
NC
NC
VDD
NC
NC
NC
NC
~READ
~CS
NC
NC
LINEOUT
SPKN
SPKP
NC
FSYNC
ICLK
NC
NC
REFCNTL
NC
NC
VSS
~IARESET
MCLK
ADVDD
SIN
SOUT
CTRLSIN
IACLK
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
RS4
RS3
RS2
RS1
RS0
VDD
D7
D6
D5
D4
D3
D2
D1
D0
~WRITE
ADVSS
NC
NC
VC
VREF
VSS
NC
RBIAS
MICIN
AVSS
LINEIN
AVDD
NC
NC
ADVSS
1087F2-4 RCDSVD 100Q
Figure 10. RCDSVD SCP Pin Signals- 100-Pin PQFP
MD211
Conexant
13
5&'5&'DQG5&'
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
Table 2. Current and Power Requirements
Current (ID)
Typical Current
(mA)
Mode
Power (PD)
Maximum Current
(mA)
Typical Power
(mW)
Maximum Power
(mW)
MCU (L28)
Notes
fIN = 28.224 MHz
Normal mode
Sleep mode
68
8
72
8.6
340
40
380
45
MDP (R6764)
fIN = 28.224 MHz
Normal mode
Sleep mode
Total Modem (MCU and MDP)
Normal mode
Sleep
85
53
90
—
280
175
325
—
153
61
162
—
620
215
705
—
27
40
135
210
Optional PnP Device
(11596-21)
Normal mode
Optional RCDSVD SCP
(R6715)
Normal mode
Sleep
fIN = 56.448 MHz
110
10
120
—
550
50
630
—
Notes:
1. Test conditions:
MCU, PnP, and SCP: VDD = +5.0 VDC for typical values; VCC = +5.25 VDC for maximum values.
MDP: VDD = +3.3 VDC for typical values; VCC = +3.6 VDC for maximum values.
2. Normal operating voltage: MCU, PnP, and SCP: VDD = +5.0 V ± 5%.
MDP: VDD = +3.3 V ± 0.3 V.
Table 3. Absolute Maximum Ratings
Symbol
Limits
Units
Supply Voltage
Parameter
VDD
V
Input Voltage
VIN
MCU: -0.5 to +6.0
MDP: -0.5 to +4.0
-0.5 to (VDD +0.5)
Operating Temperature Range
TA
-0 to +70
°C
TSTG
-55 to +125
°C
Analog Inputs
VIN
-0.3 to (VAA + 0.3)
V
Voltage Applied to Outputs in High Impedance (Off) State
VHZ
-0.5 to (VDD + 0.5)
V
DC Input Clamp Current
IIK
±20
mA
DC Output Clamp Current
IOK
±20
mA
Static Discharge Voltage (25°C)
VESD
±2500
V
Latch-up Current (25°C)
ITRIG
±400
mA
Storage Temperature Range
14
Conexant
V
MD211
,QWHJUDWHG.IOH[999ELV0RGHP'HYLFH6HWV
5&'5&'DQG5&'
NOTES
MD211
Conexant
15
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.
4311 Jamboree Road
P. O. Box C
Newport Beach, CA
92658-8902
Phone: (949) 483-4600
Fax: (949) 483-6375
U.S. Florida/South America
Phone: (813) 799-8406
Fax: (813) 799-8306
U.S. Los Angeles
Phone: (805) 376-0559
Fax: (805) 376-8180
U.S. Mid-Atlantic
Phone: (215) 244-6784
Fax: (215) 244-9292
U.S. North Central
Phone: (630) 773-3454
Fax: (630) 773-3907
U.S. Northeast
Phone: (978) 692-7660
Fax: (978) 692-8185
U.S. Northwest/Pacific West
Phone: (408) 249-9696
Fax: (408) 249-7113
U.S. South Central
Phone: (972) 733-0723
Fax: (972) 407-0639
U.S. Southeast
Phone: (770) 246-8283
Fax: (770) 246-0018
U.S. Southwest
Phone: (949) 483-9119
Fax: (949) 483-9090
APAC Headquarters
Conexant Systems Singapore,
Pte. Ltd.
1 Kim Seng Promenade
Great World City
#09-01 East Tower
Singapore 237994
Phone: (65) 737 7355
Fax: (65) 737 9077
Australia
Phone: (61 2) 9869 4088
Fax: (61 2) 9869 4077
China
Phone: (86 2) 6361 2515
Fax: (86 2) 6361 2516
Hong Kong
Phone: (852) 2827 0181
Fax: (852) 2827 6488
India
Phone: (91 11) 692 4780
Fax: (91 11) 692 4712
Korea
Phone: (82 2) 565 2880
Fax: (82 2) 565 1440
Europe Headquarters
Conexant Systems France
Les Taissounieres B1
1680 Route des Dolines
BP 283
06905 Sophia Antipolis Cedex
France
Phone: (33 4) 93 00 33 35
Fax: (33 4) 93 00 33 03
Europe Central
Phone: (49 89) 829 1320
Fax: (49 89) 834 2734
Europe Mediterranean
Phone: (39 02) 9317 9911
Fax: (39 02) 9317 9913
Europe North
Phone: (44 1344) 486 444
Fax: (44 1344) 486 555
Europe South
Phone: (33 1) 41 44 36 50
Fax: (33 1) 41 44 36 90
Middle East Headquarters
Conexant Systems Commercial
(Israel) Ltd.
P. O. Box 12660
Herzlia 46733, Israel
Phone: (972 9) 952 4064
Fax: (972 9) 951 3924
Japan Headquarters
Conexant Systems Japan Co., Ltd.
Shimomoto Building
1-46-3 Hatsudai,
Shibuya-ku, Tokyo
151-0061 Japan
Phone: (81 3) 5371-1567
Fax: (81 3) 5371-1501
Taiwan Headquarters
Conexant Systems, Taiwan Co.,
Ltd.
Room 2808, 333
International Trade Building
Keelung Road, Section 1
Taipei 110, Taiwan, ROC
Phone: (886 2) 2720 0282
Fax: (886 2) 2757 6760
SO990121
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