SI3019-F-FTR Silicon Laboratories Inc, SI3019-F-FTR Datasheet - Page 76
![no-image](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_sml.jpg)
SI3019-F-FTR
Manufacturer Part Number
SI3019-F-FTR
Description
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3019-F-FTR.pdf
(112 pages)
Specifications of SI3019-F-FTR
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI3019-F-FTR
Manufacturer:
SiliconL
Quantity:
5 000
Company:
Part Number:
SI3019-F-FTR
Manufacturer:
SiliconLa
Quantity:
872
Part Number:
SI3019-F-FTR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Si3050 + Si3018/19
Register 22. Ring Validation Control 1
Reset settings = 1001_0110
76
Bit
7:6
5:0
Name
Type
Bit
RDLY[1:0]
RMX[5:0]
Name
D7
RDLY[1:0]
Ring Delay Bits 1 and 0.
These bits, in combination with the RDLY[2] bit (Register 23), set the amount of time
between when a ring signal is validated and when a valid ring signal is indicated.
RDLY[2]
Ring Assertion Maximum Count.
These bits set the maximum ring frequency for a valid ring signal within a 10% margin of
error. During ring qualification, a timer is loaded with the RAS[5:0] field upon a TIP/RING
event and decrements at a regular rate. When a subsequent TIP/RING event occurs, the
timer value is compared to the RMX[5:0] field and if it exceeds the value in RMX[5:0] then
the frequency of the ring is too high 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 RMX[5:0] value for a frequency range [f_min,
f_max], the following equation should be used:
To compensate for error margin and ensure a sufficient ring detection window, it is recom-
mended that the calculated value of RMX[5:0] be incremented by 1.
R/W
...
0
0
0
1
D6
RDLY[1:0]
RMX 5:0
10
00
11
D5
01
Rev. 1.31
RAS 5:0
Delay
1792 ms
256 ms
512 ms
D4
0 ms
Function
–
-------------------------------------------- - RMX RAS
2 f_max
D3
RMX[5:0]
1
R/W
2 ms
D2
D1
D0