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參數(shù)資料
| 型號： | PEB2445N |
| 廠商： | SIEMENS AG |
| 英文描述： | LTM4600 Evaluation Kit |
| 中文描述： | ？多點交換和會議股-衰減？ |
| 文件頁數(shù)： | 51/70頁 |
| 文件大?。?/td> | 1236K |
| 代理商： | PEB2445N |
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PEB 2445
Detailed Register Description
Semiconductor Group
51
02.96
The interface select bits have to be programmed as shown in the following table:
Table 14
Interface Selection Bits
Access 1 to CCM
C3
…
C0
D9
Logical 4
H
, 6
H
Inversion bit: In a multiparty conference there is some risk of instability due
to reflections at the hybrid. If these reflections are not cancelled, they will
be summed up in the conference sum and will be transmitted to the
subscriber, where again they could be reflected. In very big conferences
(>> 4 subscribers) this behaviour could result in an instability.
To avoid this the PEB 2445 has the ability to invert every second
conference channel, which has no audible influence on the speech quality.
By this the noise due to reflections is compensated to a high degree.
The feature can also be applied to reduce noise due to line impedence
mismatch.
Logical line and time-slot number of the inputs (see
table 12, 13 and 14
)
Logical 0
Conference control address
D8
…
D0
IA7/IA6
IA5
…
IA0
Access 2 to CCM
C3
…
C0
D9/D8
D7/D6
D5
Logical 8
H
, A
H
Noise suppression threshold
Input attenuation level
Output attenuation level
Note: D7, D6, D5 are only relevant to conference mode; in the multipoint
switching mode these bits must be logical 0.
Conference number: 21 independent simultaneous conferences are
possible. By using the conference number 1F
H
an attenuation or noise
suppression can be inserted in a channel without conferencing.
Logical 0
Conference control address
D4
…
D0
IA7/IA6
IA5
…
IA0
System Interface
01
0
Synchronous 2-MHz Interface
10
1
Input lines
Output lines
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEB2445-N | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Multipoint Switching and Conferencing Unit - Attenuation MUSAC-A |
| PEB2445P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM， Other/Special/Miscellaneous |
| PEB2447 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Memory Time Switch Extended Large MTSXL |
| PEB2447H | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Memory Time Switch Extended Large MTSXL |
| PEB2447HV1.2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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