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參數(shù)資料
| 型號： | AM79D2251JC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 編解碼器 |
| 英文描述： | Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC) |
| 中文描述： | PCM CODEC, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 19/35頁 |
| 文件大小： | 410K |
| 代理商： | AM79D2251JC |
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Am79D2251
19
Transmit and Receive Paths
In this section, the transmit path is defined as the analog input to the ISLAC device (VINn) to the
PCM voice output of the ISLAC A-law/μ law speech compressor (See Figure 7-1 in the
Am79R2xx/
Am79D2251x Technical Reference
). The receive path is defined as the PCM voice input to the
ISLAC speech expander to the analog output of the ISLAC device (VOUTn). All limits defined in this
section are tested with B = 0, Z = 0 and X = R = RG = 1.
When RG is enabled, a gain of
–
6.02 dB is added to the digital section of the receive path.
When AR is enabled, a nominal gain of
–
6.02 dB is added to the analog section of the receive path.
When AX is enabled, a nominal gain of +6.02 dB is added to the analog section of the transmit path.
When relative levels (dBm0) are used in any of the following transmission characteristics, the
specification holds for any setting of (AX + GX) gain from 0 to 12 dB or (AR + GR) from 0 to
–
12 dB.
These transmission characteristics are valid for 0 to 70
°
C.
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相關(guān)代理商/技術(shù)參數(shù) |
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| AM79D2251VC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC) |
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| AM79H1000R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Receiver |
| AM79H1000T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Transmitter |
| AM79H1068-125 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Transmitter |
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