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PDF ( 数据手册 , 数据表 ) P9373-11

零件编号 P9373-11
描述 SmartACFL Modem
制造商 ETC
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P9373-11 数据手册, 描述, 功能
SmartACFLModem
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 ConexantSmartACFL 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, on-
board 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
Data Sheet (Preliminary)
Conexant Proprietary Information
Doc. No.100444A
December 21, 1999







P9373-11 pdf, 数据表
SmartACFL
V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications
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.
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 half-
duplex serial transfer of data, control, and status
information between the MDP and the LSD over two
lines.
8
Conexant
Doc. No. 100444A
Proprietary Information







P9373-11 equivalent, schematic
SmartACFL
V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications
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.
16
Conexant
Doc. No. 100444A
Proprietary Information










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