參數(shù)資料
型號(hào)： MT9196AE1
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Integrated Digital Phone Circuit (IDPC)
中文描述： SPECIALTY TELECOM CIRCUIT, PDIP28
封裝： 0.600 INCH, LEAD FREE, PLASTIC, MS-011AB, DIP-28
文件頁(yè)數(shù)： 5/46頁(yè)
文件大小： 631K
代理商： MT9196AE1
MT9196
Data Sheet
5
Zarlink Semiconductor Inc.
The transmit filter is designed to meet CCITT G.714 specifications. The nominal gain for this filter path is 0 dB (gain
control = 0 dB). Gain control allows the output signal to be increased up to 7 dB. An anti-aliasing filter is included.
This is a second order lowpass implementation with a corner frequency at 25 kHz. Attenuation is better than 32 dB
at 256 kHz and less than 0.01 dB within the passband.
An optional 400 Hz high-pass function may be included into the transmit path by enabling the Tfhp bit in the Control
Register 1 (address 0Eh). This option allows the reduction of transmitted background noise such as motor and fan
noise.
Figure 3 - Audio Gain Partitioning
The receive filter is designed to meet CCITT G.714 specifications. The nominal gain for this filter path is 0 dB (gain
control = 0dB). Gain control allows the output signal to be attenuated up to 7 dB. Filter response is peaked to
compensate for the sinx/x attenuation caused by the 8 kHz sampling rate.
The Rx filter function can be altered by enabling the Dial EN control bit in Control Register 1 (address 0Eh). This
causes another low-pass function to be added with a 3 dB point at 1200 Hz. This function is intended to improve the
sound quality of digitally generated dial tone received as PCM.
Side-tone is derived from the Tx filter before the LP/HP filter section and is not subject to the gain control of the Tx
filter section. Side-tone is summed into the receive handset transducer driver path after the Rx filter gain control
SERIAL
PORT
DIGITAL GAIN
& TONES
FILTER/CODEC
TRANSDUCER INTERFACE
Handset
Receiver
(150
)
Speakerphone
Speaker
(40
nominal)
34
min)
Digital Domain
Analog Domain
PCM
PCM
Receive
-24 to
+21 dB
(3dB steps)
DTMF,
Tone
Ringer
-24 to
+21 dB
(3 dB steps)
Receive
Filter Gain
0 to -7 dB
(1 dB steps)
Side-tone
-9.96 to
+9 96dB
(3.32 dB steps)
-11 dB
Transmit Filter
Gain
0 to +7 dB
(1 dB steps)
-6 dB
0/+8dB
+8 to -20dB
(4 dB steps)
RINGER
0 to -28 dB
(4 dB steps)
Trans-
mit
Gain
Trans-
mit
Gain
6.37 dB
M
U
X
5 dB
5 dB
AUXin
MIC+
M +
M -
AUXout
AUX input
H/F answer-
back mic
Transmitter
microphone
Auxiliary
Out
Driver
-12 dB
Speaker
Phone
Driver
0 dB
Receiver
Driver
-6.1 dB or
-3.6 dB
HSPKR +
HSPKR -
SPKR +
SPKR -
75
75
Internal To Device
External To Device
Transmit
-0.37 dB
or 8.93 dB
D
in
D
out
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參數(shù)描述
MT9196AP 制造商:Microsemi Corporation 功能描述:
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MT9196APR 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Integrated Digital Phone Circuit (IDPC)
MT9196APR1 制造商:Microsemi Corporation 功能描述:INTEGRATED DGTL PHONE CIRCUIT (IDPC) 28PLCC - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL TELEPHONE CIRCUIT 28PLCC 制造商:Microsemi Corporation 功能描述:IC DGTL TELEPHONE CIRCUIT 28PLCC
MT9196AS 制造商:Microsemi Corporation 功能描述:
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