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P9373-11 Schematic ( PDF Datasheet ) - ETC

Teilenummer P9373-11
Beschreibung SmartACFL Modem
Hersteller ETC
Logo ETC Logo 




Gesamt 24 Seiten
P9373-11 Datasheet, Funktion
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 Datasheet, Funktion
SmartACFL
V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications
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)
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:
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.
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.
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-to-
decoder data transfer delay, intervening variable
length data block transmission delay, and loss of
encoded speech data.
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).
6
Conexant
Doc. No. 100444A
Proprietary Information

6 Page









P9373-11 pdf, datenblatt
SmartACFL
V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications
~OE
~WE
MRDY
SPKRIN
RESET
~MRES
POR_RC
SPKROUT
~INPACK
~IREQ
RINT_RC
RINGIN
~STSCHG
~WRITE
~READ
~CH2CS
~IREQ2
~PWRDWN2
PD4
GND
XTLI
VDD
XTLO
GND
~RESOUT2
PD3
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
~WAIT
~NMI
HA0
HA1
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 ~ROMSEL
101 ~DPSEL
100 A16
99 A15
98 A14
97 A13
96 A12
95 A11
94 A10
93 A9
92 A8
91 VDD
90 A7
89 A6
88 A5
87 A4
86 A3
85 A2
84 A1
83 A0
82 TDI
81 TDO
80 TMS
79 TRSTP
78 TCK
77 GND
76 D7
75 D6
74 D5
73 D4
72 D3
71 D2
70 D1
69 D0
68 ~TST
67 NVMCLK/TXDCLK
66 GSMTXD
65 DAA/GSM
Cellular
GSM
RCDSVD
Firmware option
1156F3-6 PO-MCUP-128T
Figure 4. MCUP Pin Signals - PC Card Interface - 128-Pin TQFP
12
Conexant
Doc. No. 100444A
Proprietary Information

12 Page





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