- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385089 > AK2306 (Asahi Kasei Microsystems Co.,Ltd) Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER PDF資料下載
參數(shù)資料
| 型號： | AK2306 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER |
| 中文描述： | 雙的PCM編解碼器對ISDN / VoIP終端適配器 |
| 文件頁數(shù)： | 8/38頁 |
| 文件大?。?/td> | 469K |
| 代理商： | AK2306 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第8頁第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頁第33頁第34頁第35頁第36頁第37頁第38頁
ASAHI K ASEI
[AK 2306/LV]
CIRCUIT DESCRIPTION
Block
AMPT0,1
Op-amp for input gain adjustment. This op-amp has differential inputs.
Adjusting the gain with external resistors. The resistor larger than 10k
is
recommended for the feedback resistor.
<NOTE >
AMPT0(1) becomes automatically power down, when CODE C ch0(1) is power
down.
AMPR0,1
Op-amp for output gain adjustment. This op-amp is used as an inverting
amplifier. Adjusting the gain with external resistors. The resistor larger than
10k
is recommended for the feedback resistor.
AAF
Integrated anti-aliasing filter which prevents signals around the sampling rate
from folding back into the voice band. AAF is a 2nd order RC low-pass filter.
A/D
Converts analog signal to 8bit PCM data according to the companding schemes of
ITU recommendation G.711; A-law or u-law. The band limiting filter is also
integrated. The selection of companding schemes is set by ALAWN register as
follows:
"H": u-Law
"L": A-Law
D/A
E xpands 8bit PCM data according to A-law or u-law. The selection of
companding schemes is set by ALAWN register as follows:
"H": u-Law
"L": A-Law
SMF
E xtracts the inband signal from D/A output. It also corrects the sinx/x effect of
D/A output.
BGREF
Provides the stable analog ground voltage using an on-chip band-gap reference
circuit which is temperature compensated. The output voltage is 2.4V for +5V
operation(AK 2306) or 1.5V for +3.3V operation(AK 2306LV).
RING TONE
GENERATOR
controlled by the registers.
GA0T/R
GA1T/R
GATN
SERIAL I/F
Interface to the internal register by using SCLK , DATA, and
CSN
pins.
PLL
PLL generates system clock of AK 2306. Reference clock is FS (8KHz). More than
0.22uF of an external capacitance should be connected between LPC and VSS.
PCM I/F
PCM data rate is available for 64xN(N = 2 to 64)kHz which synchronizes with
BCLK . Two kinds of data format (Long Frame, Short Frame) are available.
E ach data format is automatically detected. PCM data stream, which includes
ch0 and ch1 data, is output through DX pin and input through DR pin. Ch1
PCM data stream always follows ch0 PCM data stream.
MS0093-E -04 8 2001/11
Function
Generates two kinds of tone; 16Hz or 20Hz. Tone selection and Tone ON/OFF is
Gain selects of analog I/O signals. It is posibble to select gain from +6dB to -18dB
(1dB/step). Gain is defined by the internal register.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK2306LV | Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER |
| AK2307 | SPEECH CODEC for Digital Key telephone (5.0V/3.3V) |
| AK2307LV | SPEECH CODEC for Digital Key telephone (5.0V/3.3V) |
| AK2347 | JT 37C 37#22D PIN GRND PLUG |
| AK2368 | BASE-BAND LSI FOR CORDLESS TELEPHONES |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK2306LV | 制造商:AKM 制造商全稱:AKM 功能描述:Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER |
| AK2306LVM | 制造商:AKM 制造商全稱:AKM 功能描述:ISDN/VoIP?????????????????￠???????????¨ ????????￡??3?????? ??°??￡??-??3???????????ˉ ?????3??? |
| AK2306VM | 制造商:AKM 制造商全稱:AKM 功能描述:ISDN/VoIP?????????????????￠???????????¨ ????????￡??3?????? ??°??￡??-??3???????????ˉ ?????3??? |
| AK2307 | 制造商:AKM 制造商全稱:AKM 功能描述:SPEECH CODEC for Digital Key telephone (5.0V/3.3V) |
| AK2307LV | 制造商:AKM 制造商全稱:AKM 功能描述:SPEECH CODEC for Digital Key telephone (5.0V/3.3V) |
發(fā)布緊急采購，3分鐘左右您將得到回復。