SI3050-E-FT Silicon Laboratories Inc, SI3050-E-FT Datasheet - Page 76

• Manufacturer Part Number: SI3050-E-FT
• Description: IC VOICE DAA GCI/PCM/SPI 20TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3050-E-FT

• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Includes: Line Voltage Monitor, Loop Current Monitor, Overload Detection, Parallel Handset Detection, Polarity Reversal Detection, TIP and
• Function: Data Access Arrangement (DAA)
• Interface: PCM, Serial, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 8.5mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Product: RF / Wireless
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V
• Supply Current: 8.5 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

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