參數(shù)資料
型號(hào)： Z0220516SSC1961
英文描述： Modem Controller
中文描述： 調(diào)制解調(diào)器控制器
文件頁數(shù)： 31/48頁
文件大?。?/td> 1331K
代理商： Z0220516SSC1961
Z02202
ZiLOG
V.22bis Data Pump with Integrated AFE
PS000902-0501
Z02201
31
BiQuadOffThresh
052
–
42 dBm
Biquad Tone Detectors OFF Point
The data pump sets this location to its default value when Con
fi
g register,
bits 0
–
6 (MODE) is set to 2 by the host.
This location can be used to set the off point for the Biquad tone detectors.
If the power level is below this value, the detector will turn off the detection
status bit.
Use the following formula to set the threshold where the level is in dBm:
10
level
=
The data pump sets this location to its default value when the host sets
Config register, bits 0
–
6 (MODE)=2 (detect tones).
Biquad Tone Detectors ON Point
The data pump sets this location to its default value when Con
fi
g register,
bits 0
–
6 (MODE) is set to 2 by the host.
This location can be used to set the ON point for the Biquad tone detectors.
If the power level is above this value, the detector turns the detection status
bit ON.
BiQuadOnThresh
051
–
35 dBm
Use the following formula to set the threshold where level is in dBm:
10
level
=
The data pump sets this location to its default value when the host sets
Config register, bits 0
–
6 (MODE) is 2 (detect tones).
Discrete Tone Detector Levels
DTD0Lev
–
26
–
35
DTD15Lev
—
These locations represent the tone detector levels when in the Tone
Detect mode (
Con
fi
g register, bits 0
–
6 (MODE) has the value of 02H).
These areas may be used by the host to determine which tone is
dominant if multiple tones are detected. These particular locations have
no default.
Discrete Tone Detector Threshold
This location programs the threshold for all discrete tone detectors. Any
signal whose signal strength is above this threshold turns on the
detection bit for that tone. Any signal below this threshold turns off the
detection bit for that tone. This location can be programmed using the
following formula:
DTDThresh
03
–
24 dBm
This location must be programmed after Con
fi
g register, bits 0
–
6 (MODE)
is set to detect tone (02H), because the data pump resets this location to
its default when Con
fi
g register, bits 0
–
6 (MODE) is set to tone detect
mode. See
“
Tone Detectors
”
for more information.
Table 15. Modem Data Pump Word De
fi
nitions (Continued)
Register & Address
(hex)
Default
Value
Function and Explanation
Threshold
(
)
20
32767
Threshold
(
)
20
32767
Threshold
10
level
(
)
20
32767
=
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