參數(shù)資料
型號： SI3050-E1-GT
廠商： Silicon Laboratories Inc
文件頁數(shù)： 109/128頁
文件大?。?/td> 0K
描述： IC VOICE DAA SYSTEM SIDE 24QFN
標準包裝： 74
系列： *
Si3050 + Si3011/18/19
Rev. 1.5
81
Reset settings = 0001_1001
Reset settings = xx0x_xxxx
Register 24. Ring Validation Control 3
Bit
D7D6
D5D4D3
D2D1D0
Name
RNGV
RAS[5:0]
Type
R/W
Bit
Name
Function
7RNGV
Ring Validation Enable.
0 = Ring validation feature is disabled.
1 = Ring validation feature is enabled in both normal operating mode and low-power
mode.
6
Reserved
This bit must always be written to 0.
5:0
RAS[5:0]
Ring Assertion Time.
These bits set the minimum ring frequency for a valid ring signal. During ring qualification,
a timer is loaded with the RAS[5:0] field upon a TIP/RING event and decrements at a reg-
ular rate. If a second or subsequent TIP/RING event occurs after the timer has timed out
then the frequency of the ring is too low and the ring is invalidated. The difference between
RAS[5:0] and RMX[5:0] identifies the minimum duration between TIP/RING events to qual-
ify as a ring, in binary-coded increments of 2.0 ms (nominal). A TIP/RING event typically
occurs twice per ring tone period. At 20 Hz, TIP/RING events would occur every
1/(2 x 20 Hz) = 25 ms. To calculate the correct RAS[5:0] value for a frequency range
[f_min, f_max], the following equation should be used:
Register 25. Resistor Calibration
Bit
D7
D6D5D4D3
D2
D1D0
Name
RCALS
RCALM
RCALD
RCAL[3:0]
Type
RR/W
R/W
Bit
Name
Function
7
RCALS
Resistor Auto Calibration.
0
= Resistor calibration is not in progress.
1
= Resistor calibration is in progress.
6
RCALM
Manual Resistor Calibration.
0
= No calibration.
1
= Initiate manual resistor calibration. (After a manual calibration has been initiated, this bit
must be cleared within 1 ms.)
5
RCALD
Resistor Calibration Disable.
0 = Internal resistor calibration enabled.
1 = Internal resistor calibration disabled.
4
Reserved
This bit can be written to a 0 or 1.
3:0
RCAL[3:0] Always write back the value read. Result of resistor calibration. Do not modify this value.
RAS 5:0
1
2f_min
2 ms
-------------------------------------------
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