參數(shù)資料
型號(hào)： MT9094
廠商： Mitel Networks Corporation
英文描述： Digital Telephone (DPhone-II)(數(shù)字電話)
中文描述： 數(shù)字電話（DPhone -Ⅱ）（數(shù)字電話）
文件頁(yè)數(shù)： 9/34頁(yè)
文件大小： 234K
代理商： MT9094
MT9094
7-53
Transducer Interfaces
Four standard telephony transducer interfaces are
provided by the DPhone
-II
. These are:
±
The handset microphone inputs (transmitter),
pins M+/M- and the speakerphone microphone
inputs, pins MIC+/MIC-. The transmit path is
muted/not-muted by the MIC EN control bit.
Selection of which input pair is to be routed to
the transmit filter amplifier is acomplished by the
MIC/HNSTMIC control bit. Both of these reside
in the Transducer Control Register (address
0Eh). The nominal transmit path gain may be
adjusted to either 6.1dB (suggested for
μ
-Law)
or 15.4dB (suggested for A-Law). Control of this
gain is provided by the MICA/u control bit
(General Control Register, address 0Fh). This
gain
adjustment
is
programmable gain provided by the transmit
filter and DSP.
in
addition
to
the
±
The handset speaker outputs (receiver), pins
HSPKR+/HSPKR-.
compensated, fully differential output driver is
capable of driving the load shown in Figure 4.
This output is enabled/disabled by the HSSPKR
EN bit residing in the Transducer Control
Register (address 0Eh). The nominal handset
receive path gain may be adjusted to either
-12.3dB (suggested for
μ
-Law) or - 9.7dB
(suggested for A-Law). Control of this gain is
provided by the RxA/u control bit (General
Control Register, address 0Fh). This gain
adjustment is in addition to the programmable
gain provided by the receive filter and DSP.
This
internally
±
The loudspeaker outputs, pins SPKR+/SPKR-.
This internally compensated, fully differential
output driver is capable of directly driving 6.5vpp
into a 40 ohm load. This output is enabled/
disabled by the SPKR EN bit residing in the
Transducer Control Register (address 0Eh). The
nominal gain for this amplifier is 0.2dB.
C-Channel
Access to the internal control and status registers of
Mitel basic rate, layer 1, transceivers is through the
ST-BUS Control Channel (C-Channel), since direct
microport access is not usually provided, except in
the case of the SNIC (MT8930). The DPhone
-II
provides asynchronous microport access to the
ST-BUS C-Channel information on both DSTo and
DSTi via a double-buffered read/write register
(address 14h). Data written to this address is
transmitted on the C-Channel every frame when
enabled by CH
1
EN (see ST-BUS/Timing Control).
Figure 4 - Handset Speaker Driver
LCD
A twelve segment, non-multiplexed, LCD display
controller is provided for easy implementation of
various set status and call progress indicators. The
twelve output pins (S
n
) are used in conjunction with
12 segment control bits, located in LCD Segment
Enable Registers 1&2 (addresses 12h and 13h), and
the BackPlane output pin (BP) to control the on/off
state of each segment individually.
The BP pin drives a continuous 62.5Hz, 50% duty
cycle squarewave output signal. An individual
segment is controlled via the phase relationship of its
segment driver output pin with respect to the
backplane, or common, driver output. Each of the
twelve Segment Enable bits corresponds to a
segment output pin. The waveform at each segment
pin is in-phase with the BP waveform when its
control bit is set to logic zero (segment off) and is
out-of-phase with the BP waveform when its control
bit is set to a logic high (segment on). Refer to the
LCD
Driver
Characteristics
information.
for
pin
loading
Microport
A serial microport, compatible with Intel MCS-51
(mode 0) specifications, provides access to all
DPhone
-II
internal read and write registers. This
microport consists of three pins; a half-duplex
transmit/receive data pin (DATA1), a chip select pin
(CS) and a synchronous data clock pin (SCLK).
On power-up reset (PWRST) or with a software reset
(RST), the DATA1 pin becomes a bidirectional
(transmit/receive) serial port while the DATA2 pin is
internally disconnected and tri-stated.
HSPKR+
HSPKR-
75
75
1000 pF
150 ohm
load
(speaker)
1000 pF
ground
MT9094
相關(guān)PDF資料
PDF描述
MT9122 Dual Voice Echo Canceller with Tone Detection(雙話音回聲消除器（帶音調(diào)檢測(cè)功能）)
MT9122AE CMOS Dual Voice Echo Canceller with Tone Detection
MT9122AP CMOS Dual Voice Echo Canceller with Tone Detection
MT9123AE CMOS Dual Voice Echo Canceller
MT9123 Dual Voice Echo Canceller(雙話音回聲消除器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9094AP 制造商:Microsemi Corporation 功能描述: 制造商:Mitel Networks Corporation 功能描述:
MT9094AP1 制造商:Microsemi Corporation 功能描述:DGTL TEL 44PLCC - Rail/Tube
MT9094APR1 制造商:Microsemi Corporation 功能描述:DGTL TEL 44PLCC - Tape and Reel 制造商:Zarlink Semiconductor Inc 功能描述:DGTL TEL 44PLCC - Tape and Reel
MT9122 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Dual Voice Echo Canceller with Tone Detection
MT9122AE 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 2CH G.164/G.165/G.711 W/ TONE DETECTION - Rail/Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*