參數(shù)資料
型號(hào)： 73M2901CLIH
廠商： TDK Corporation
英文描述： V.22 BIS SINGLE CHIP MODEM
中文描述： .22結(jié)算單芯片調(diào)制解調(diào)器
文件頁(yè)數(shù)： 9/18頁(yè)
文件大?。?/td> 282K
代理商： 73M2901CLIH
73M2901CL
V.22bis Single Chip Modem
FIRMWARE DESCRIPTION*
9
An
“
AT
”
command interpreter provides command
and configuration of the 73M2901CL. This provides
the user a uniform interface to control the modem in
embedded applications.
The signal processing is performed to provide data
to the DAC and process data from the A/D
converter. A MAC hardware coprocessor is provided
for computation.
To provide maximum flexibility, the system host
processor can access the internal RAM and Control
Register space in the modem. This will allow the
OEM user to modify parameters such as filter
response, transmit levels through the AT command
set using proprietary commands. The host processor
can also access the modem I/O port pins, providing
extended I/O capability.
FIRMWARE REQUIREMENTS
The modem always powers up in the idle (on hook)
mode.
“
AT
”
commands are issued via the serial
interface from the host. All modem configuration
commands are received in this manner. The data
modem firmware is contained in an internal ROM.
The firmware will automatically enter a power saving
idle mode if the modem is on hook and there are no
incoming host commands. The modem automatically
powers up upon receiving the next command. This
power up sequence occurs without delay to the host.
This function, while saving power, is transparent to
the host processor and can be disabled by the host
via an
“
AT
”
command. The host can also program
the modem to power down via external pin (DTR) or
via a firmware command.
FIRMWARE FEATURES
“
AT
”
command set
Supports data standards through V.22bis
Provides DAA control firmware (e.g. ring detect,
hook control)
Multinational Call progress support (FCC68,
CTR21, JATE, etc.)
Caller ID capability
o
FSK demodulation (V23 or Bell202)
o
DTMF demodulation
o
Intra 1st/2nd ring CID data operation
o
Post
Line
operation
reversal
CID
data
On hook Line-In-Use detection support (No line
seizure will occur when a Line-In-Use condition
is detected)
o
Tip/Ring voltage sensing
o
Quiescent line validation
Off hook Parallel Pick-Up detection support
(Line seizure will be aborted as soon as a
Parallel Pick-Up condition is detected)
Directly interfaces with standard V.24/EIA-232
bus drivers (3.3V inverted level) serial interface
using the built in serial port and firmware control
of port pins
Provides
including four imprecise and four precise call
progress detect filters with programmable
frequency and detection threshold
tone
generation
and
detection
Blacklisting capability
Long Space disconnect
Inactivity timeout
Host access to program RAM provided
User programmable general purpose I/O
* Refer to the TDK 73M2901CL User Guide for a complete description of the software.
相關(guān)PDF資料
PDF描述
73M2901 Advanced Single Chip Modem(高級(jí)單芯片調(diào)制解調(diào)器)
7407 Hex Buffers with High Voltage Open-Collector Outputs
74125 Quad 3-STATE Buffer
74126 Quad 3-STATE Buffer
7413 Power MOSFET
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73M2901CL-IH/F 功能描述:電信線路管理 IC V.22bis Single-Chip Modem w/Cid Ppu Liu RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M2901CL-IHR/F 功能描述:電信線路管理 IC V.22bis Single-Chip Modem w/Cid Ppu Liu RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M2901CL-IM/F 制造商:Maxim Integrated Products 功能描述:V.22BIS MODEM W/ CID PPU LIU - Rail/Tube
73M2901-IG3 制造商:TDK 制造商全稱:TDK Electronics 功能描述:Advanced Single Chip Modem
73M2901-IGT 制造商:TDK 制造商全稱:TDK Electronics 功能描述:Advanced Single Chip Modem
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