- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371180 > T8531A T8531A/8532 Multichannel Programmable Codec Chip Set PDF資料下載
參數(shù)資料
| 型號： | T8531A |
| 元件分類： | Codec |
| 英文描述： | T8531A/8532 Multichannel Programmable Codec Chip Set |
| 中文描述： | T8531A/8532多通道可編程解碼器芯片組 |
| 文件頁數(shù)： | 23/50頁 |
| 文件大?。?/td> | 888K |
| 代理商： | T8531A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第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頁當(dāng)前第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頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁
Agere Systems Inc.
23
Preliminary Data Sheet
September 2001
Codec Chip Set
T8531A/T8532 Multichannel Programmable
Chip Set Functional Description
(continued)
Self-Test and Line-Test Routines
(continued)
Tone Detection
In tone detection mode, the TX part of the channel can
be used to detect signal energy from the line at a given
frequency up to 4 kHz. This routine performs discrete
Fourier transform (DFT) to capture and analyze the
reflected tone. The routine does not employ the trans-
mit bandpass filters. The number of frames to sample
the reflected tone must be defined. The number of
frames that DFT is run must be a power of 2 and
should be complete cycles of tone value.
dc Generation
This routine generates a dc signal (value defined by
user) in the RX path.
dc Measurement
Provides average dc value and difference between two
average values.
Variance Computation
The variance routine computes the variance of small
noise signals from the TX path around the computed
mean level. This routine employs the transmit band-
pass filters for out-of-band noise reduction.
Peak Detection
This routine examines the incoming TX signal and
saves the maximum and minimum signal values. Two
versions are provided. The peak detection routine
scales the result by the TX absolute gain. The alternate
peak detection routine does not.
Tone Plant
The following tone plant functions are provided in ROM
code in the T8531A device. Refer to the T8531 and
T8531A Tone Processingmanual for more information
DTMF Transceiver
DTMF generation and detection satisfies LSSGR Sig-
naling for Analog Interfaces GR-506 CORE, section
15.
Caller Line Identification
Called ID transmission is performed as specified in TR-
NWT-000031 (CLASS feature: calling number deliv-
ery).
Call Progress Tones
A call progress tone generator is provided. This tone
generator complies with TelcordiaGR-506-CORE
requirements.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T8531 | T8502 and T8503 Dual PCM Codecs with Filters |
| T8532 | T8502 and T8503 Dual PCM Codecs with Filters |
| T8533 | T8533/34 Quad Programmable Line Card Signal Processor |
| T8534 | T8533/34 Quad Programmable Line Card Signal Processor |
| T8535B | T8535B/T8536B Quad Programmable Codec |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T8532 | 制造商:AGERE 制造商全稱:AGERE 功能描述:T8531A/8532 Multichannel Programmable Codec Chip Set |
| T8533 | 制造商:AGERE 制造商全稱:AGERE 功能描述:T8533/34 Quad Programmable Line Card Signal Processor |
| T85331G | 制造商:BITECH 制造商全稱:Bi technologies 功能描述:Thick Film Super Low Profile SIP Resistor Networks |
| T85331J | 制造商:BITECH 制造商全稱:Bi technologies 功能描述:Thick Film Super Low Profile SIP Resistor Networks |
| T8534 | 制造商:AGERE 制造商全稱:AGERE 功能描述:T8533/34 Quad Programmable Line Card Signal Processor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。