- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄359736 > MT8965 (Mitel Networks Corporation) Integrated PCM Filter Codec PDF資料下載
參數(shù)資料
| 型號： | MT8965 |
| 廠商： | Mitel Networks Corporation |
| 元件分類： | Codec |
| 英文描述： | Integrated PCM Filter Codec |
| 中文描述： | 集成的PCM編解碼器 |
| 文件頁數(shù)： | 9/32頁 |
| 文件大?。?/td> | 607K |
| 代理商： | MT8965 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
MT8960/61/62/63/64/65/66/67
Data Sheet
9
Zarlink Semiconductor Inc.
Table 2 - Control States - Register A
Control Registers A, B
The contents of these registers control the filter/codec functions as described in Tables 2 and 3.
Bit 7 of the registers is the MSB and is defined as the first bit of the serial data stream input (corresponding to the
sign bit of the PCM word).
On initial power-up these registers are set to the powerdown condition for a maximum of 25 clock cycles. During
this time it is impossible to change the data in these registers.
Chip Testing
By enabling Register B with valid data (eight-bit control word input to CSTi when F1i=GNDD and CA= V
CC
) the chip
testing mode can be entered. Bits 6 and 7 (most sign bits) define states for testing the transmit filter, receive filter
and the codec function. The input in each case is V
X
input and the output in each case is V
R
output. (See Table 3 for
details.)
Loopback
Loopback of the filter/codec is controlled by the control word entered into Register A. Bits 6 and 7 (most sign bits)
provide either a digital or analog loopback condition. Digital loopback is defined as follows:
PCM input data at DSTi is latched into the PCM input register and the output of this register is connected to
the input of the 3-state PCM output register.
The digital input to the PCM digital-to-analog decoder is disconnected, forced to zero (0).
The output of the PCM encoder is disabled and thus the encoded data is lost. The PCM output at DSTo is
determined by the PCM input data.
Analog loopback is defined as follows:
PCM input data is latched, decoded and filtered as normal but not output at V
R
.
Analog output buffer at V
R
has its input shorted to GNDA and disconnected from the receive filter output.
Analog input at V
X
is disconnected from the transmit filter input.
The receive filter output is connected to the transmit filter input. Thus the decode signal is fed back through
the receive path and encoded in the normal way. The analog output buffer at V
R
is not tested by this
configuration.
In both cases of loopback, DSTi is the input and DSTo is the output.
BIT 7
BIT 6
FUNCTION CONTROL
0
0
Normal operation
0
1
Digital Loopback
1
0
Analog Loopback
1
1
Powerdown
BIT 2
BIT 1
BIT 0
TRANSMIT (A/D)
FILTER GAIN (dB)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8965AC | ISO2-CMOS Integrated PCM Filter Codec |
| MT8965AE | ISO2-CMOS Integrated PCM Filter Codec |
| MT8967 | Integrated PCM Filter Codec |
| MT3370 | Wide Dynamic Range DTMF Receiver |
| MT8967AS | ISO2-CMOS Integrated PCM Filter Codec |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8965AC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated PCM Filter Codec |
| MT8965AE | 制造商:Microsemi Corporation 功能描述: |
| MT8965AE1 | 制造商:Microsemi Corporation 功能描述:PB FREE A-LAW FILTER CODEC 制造商:Microsemi Corporation 功能描述:PCM FLTR CODEC 18PDIP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC CODEC A-LAW CCITT PCM 18PDIP 制造商:Microsemi Corporation 功能描述:IC CODEC A-LAW CCITT PCM 18PDIP |
| MT8966 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated PCM Filter Codec |
| MT8966AS | 制造商:MITEL 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。