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| 型號(hào)： | ST75C530FP-A |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES |
| 中文描述： | 超級(jí)綜合DEVICESWITH數(shù)字信號(hào)處理器，模擬前端 |
| 文件頁(yè)數(shù)： | 54/84頁(yè) |
| 文件大?。?/td> | 599K |
| 代理商： | ST75C530FP-A |
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IX.2.2- PowerEstimation
The Power estimation Cell is needed to measure
the amplitude of the different tones. It is run on a
sample basis.
IX - TONE DETECTORS
(continued)
Z
-1
IN
OUT
ABS(.)
P1
+
Z
-1
7
Figure 18 :
PowerEstimator
The correspondingtransferfunctionis :
Out
=
|
Input
|
z
1
P1
1
(
1
P1
)
z
1
IX.2.3- Static Level
A single Threshold level is associated with each
Cell.Itcanbe useto comparetheoutputof aPower
Estimationwith an AbsoluteValue.
IX.2.4- Comparator
The Comparator computes, on a baud basis, the
differenceof thesignalonitsPositiveandNegative
Inputs. If the result is Higher that zero it sets the
corresponding bitinto the TONEDET[0..1]word; if
not it clear this bit.
IX.2.5- Wiring
The user must specify the connection(wiring) be-
tweenthe input/outputof theFilter,theinput/output
of the Power estimator, the output of the static
levels and the two inputs of the Comparators.
The output signals have an absoluteaddress:
Node Address
Signal
Name
Ground
RxSig
Address
Description
00
01
Signal always equal to 0000
Receive signal from the
Analog front end
Receive signal multiplied by 2
Receive signal multiplied by 4
Reserved
Biquadratic Filter Outputs
Power Estimator Outputs
Static Levels
RxSig2
RxSig4
02
03
04..0F
10..1F
20..2F
30..3F
Filter[0..F]
Power[0..F]
Level[0..F]
Theuserwill specifythe inputsof thefilters, Power
andComparator.Atleastoneinputmustcomefrom
the RxSig (node 01, 02 or 03). It is mandatory to
connectall unusedcell inputsto the Groundsignal
(node00).
ST75C530 - ST75C540
54/84
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| ST75C530PQFP | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Telecommunication IC |
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| ST75C540FP-A | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES |
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