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參數(shù)資料
| 型號： | MT90812 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Integrated Digital Switch (IDX)(集成數(shù)字開關(guān)) |
| 中文描述： | 綜合數(shù)字交換機（IDX的）（集成數(shù)字開關(guān)） |
| 文件頁數(shù)： | 67/105頁 |
| 文件大?。?/td> | 334K |
| 代理商： | MT90812 |
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Advance Information
MT90812
63
The SSCA register is used to store the cadence information for Energy Detect block A. Refer to “Supervisory
Signal Detection and Cadence Measurement” on page 47.
The counter is used to time the cadence of the signal. When the signal envelope crosses the energy detect
threshold the counter starts. When the other threshold limit is crossed the P bit is updated, the counter value is
transferred to bits t6-t0, in this SSC register and an interrupt is generated.
The P bit specifies the current envelope position with respect to the high and low thresholds. When P is set this
indicates the signal envelope has crossed above the high threshold otherwise it had crossed below the low
threshold.
The count is stored in 4 msec intervals and ranges from 0 to 508 msec.
For a continuous signal, such as dial tone, where there is no off time, an interrupt is generated when the
counter reaches a maximum count of 508 seconds or 7F
H
. The continuous signal is indicated by the P bit
maintaining the same value.
22.15
Energy Detect B - Low Threshold Register (EDBLT)
The
EDBLT
register is configured as follows:
ET0-ET3 encode the PCM step number while ET4-ET6 encode the PCM chord number.
22.16
Energy Detect B - High Threshold Register (EDBHT)
The
EDBHT
register is configured as follows:
ET0-ET3 encode the PCM step number while ET4-ET6 encode the PCM chord number.
Read/Write Address is: 014
H
Reset Value is: 00
H
Bit
Name
Description
7
Unused
Reserved
.
6-0
Low Threshold
Energy Detect Low Threshold
. PCM sign-magnitude format with no sign bit.
Bit 6 = MSB.
Read/Write Address is: 015
H
Reset Value is: 00
H
Bit
Name
Description
7
Unused
Reserved
.
6-0
High Threshold
Energy Detect High Threshold
. PCM sign-magnitude format with no sign bit.
Bit 6 = MSB.
7
6
5
4
3
2
1
0
ET5
ET2
ET1
ET0
ET4
ET6
ET3
-
7
6
5
4
3
2
1
0
ET5
ET2
ET1
ET0
ET4
ET6
ET3
-
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT90812AL | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays |
| MT90812AL1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 64MQFP - Trays 制造商:Microsemi Corporation 功能描述:PB FREE INTEGRATED DIGITAL SWITCH |
| MT90812AP | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated Digital Switch (IDX) |
| MT90812AP1 | 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 192 X 192 16.384MBPS 5V 68PLCC /BAKE/DRYPACK - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:INTEGRATED DIGITAL SWCH |
| MT90812APR | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 192 X 192/64 X 64 1.048GBPS 5V 68PLCC - Tape and Reel |
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