參數(shù)資料
型號(hào)： MT9122AP
廠商： Mitel Networks Corporation
英文描述： CMOS Dual Voice Echo Canceller with Tone Detection
中文描述： CMOS雙語(yǔ)音回聲消除的音偵測(cè)
文件頁(yè)數(shù)： 4/32頁(yè)
文件大小： 143K
代理商： MT9122AP
MT9122
Preliminary Information
8-20
Notes:
1. All unused inputs should be connected to logic low or high unless otherwise stated. All outputs should be left open circuit when not used.
2. All inputs have TTL compatible logic levels except for MCLK, Sin and Rin pins which have CMOS compatible logic levels and PWRDN
pin which has Schmitt trigger compatible logic levels.
3. All outputs are CMOS pins with CMOS logic levels.
17/18
17
18
S4/S3
SCLK
CS
Selection of Echo Canceller B Functional States (Input):
Controllerless Mode: Selects Echo Canceller B functional states according to Table 2.
Controller Mode: S4 and S3 pins become SCLK and CS pins respectively.
Serial Port Synchronous Clock (Input):
Data clock for the serial microport interface.
Chip Select (Input):
Enables serial microport interface data transfers. Active low.
19/20
19
20
S2/S1
DATA2
DATA1
Selection of Echo Canceller A Functional States (Input):
Controllerless Mode: Selects Echo Canceller A functional states according to Table 2.
Controller Mode: S2 and S1 pins become DATA2 and DATA1 pins respectively.
Serial Data Receive (Input):
In Motorola/National serial microport operation, the DATA2 pin is used for receiving data. In
Intel serial microport operation, the DATA2 pin is not used and must be tied to Vss or Vdd.
Serial Data Port (Bidirectional):
In Motorola/National serial microport operation, the DATA1 pin is used for transmitting data. In
Intel serial microport operation, the DATA1 pin is used for transmitting and receiving data.
21
F0od
Delayed Frame Pulse Output (Output):
In ST-BUS operation, this pin generates a delayed frame pulse after the 4th channel time slot
and is used for daisy-chaining multiple ST-BUS devices. See Figures 5 to 8.
In SSI operation, this pin outputs logic low.
22
VDD
Positive Power Supply:
Nominally 5 volts.
23
Sout
Send PCM Signal Output (Output):
128 kbit/s to 4096 kbit/s serial PCM output stream. Data may be in either companded or 2’s
complement linear PCM format. Two PCM channels are time-multiplexed on this pin. These
are the Send Out signals after echo cancellation and Non-linear processing. Data bits are
clocked out following SSI or ST-BUS timing requirements.
24
Rout
Receive PCM Signal Output (Output):
128 kbit/s to 4096 kbit/s serial PCM output stream. Data may be in either companded or 2’s
complement linear PCM format. Two PCM channels are time-multiplexed on this pin. This
output pin is provided for convenience in some applications and may not always be required.
Data bits are clocked out following SSI or ST-BUS timing requirements.
25
F0i
Frame Pulse (input):
In ST-BUS operation, this is a frame alignment low going pulse. SSI operation is enabled by
connecting this pin to Vss.
26
BCLK/C4i Bit Clock/ST-BUS Clock (Input):
In SSI operation, BCLK pin is a 128 kHz to 4.096 MHz bit clock. This clock must be
synchronous with ENA1, ENA2, ENB1 and ENB2 enable strobes.
In ST-BUS operation, C4i pin must be connected to the 4.096MHz (C4) system clock.
27/28 CONFIG1/
CONFIG2
Device Configuration Pins (Inputs).
When CONFIG1 and CONFIG2 pins are both logic 0, the MT9122 serial microport is enabled.
This configuration is defined as Controller Mode. When CONFIG1 and CONFIG2 pins are in
any other logic combination, the MT9122 is configured in Controllerless Mode. See Table 3.
Pin Description (continued)
Pin #
Name
Description
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9122AP1 制造商:Zarlink Semiconductor Inc 功能描述:ECHO CANCELLER CHIP 2CH G.164/G.165/G.711 W/ TONE DETECTION - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE DUAL VOICE ECHO CANCELLER W/TD
MT9122APR1 制造商:Zarlink Semiconductor Inc 功能描述:ECHO CANCELLER CHIP 2CH G.164/G.165/G.711 W/ TONE DETECTION - Tape and Reel
MT9123 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Dual Voice Echo Canceller
MT9123AE 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 2CH G.165/G.711 W/OUT TONE DETECTION 28P - Rail/Tube
MT9123AE1 制造商:Microsemi Corporation 功能描述:
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