SI3066-B-FS Silicon Laboratories Inc, SI3066-B-FS Datasheet - Page 12

• Manufacturer Part Number: SI3066-B-FS
• Description: IC DAA ENH FCC LINE-SIDE 8SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Single Chipr

Specifications of SI3066-B-FS

• Package / Case: *
• Function: Direct Access Arrangement (DAA)
• Number Of Circuits: 1
• Current - Supply: 9mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Includes: Billing Tone Detection, Line Voltage Monitor, Loop Current Monitor, Overload Detection, Ring Detector
• Product: Modem Chip
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Power (watts): -
• Interface: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Si3066
4.5. Line Voltage Sensing
The Si3066 measures line voltage when on-hook. The LVS[6:0] bits (register 29) report line voltage with 1 V/bit
resolution (typical). The LVS bits can be used to determine if a line is present and, if so, if it is idle or in use. Since
these operations can be performed while on-hook, there is no need to enter the off-hook state and possibly disturb
a call in progress to determine the status of the line. The typical LVS transfer function is shown in Figure 7 and
detailed in Table 7.
12
0000100
LVS
127
0000000
LVS[6:0]
1111111
4
0
0
b
– 1111110
Figure 7. Line Voltage Status Transfer Function
Table 7. Line Voltage Status Transfer Function
3 4
b
b
b
V
3.5 V < V
V
LINE
LINE
Line Voltage (V)
< 3.5 V
> 126.5 V
Rev. 1.0
LINE
< 126.5 V
Line Voltage
126