SI3050-E-FM Silicon Laboratories Inc, SI3050-E-FM Datasheet - Page 82

• Manufacturer Part Number: SI3050-E-FM
• Description: IC VOICE DAA GCI/PCM/SPI 24-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI3050-E-FM

• Function: Data Access Arrangement (DAA)
• Interface: GCI, PCM, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 8.5mA
• Power (watts): *
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-WFQFN Exposed Pad
• Includes: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Si3050 + Si3011/18/19
Register 26. DC Termination Control
Reset settings = 0000_0000
82
Bit
7:6
5:4
3:2
1
0
Name
Type
Bit
Reserved
DCV[1:0]
MINI[1:0]
Name
DCR
ILIM
D7
TIP/RING Voltage Adjust. Si3018 and Si3019 line-side only.
These bits adjust the voltage on the DCT pin of the line-side device, which affects the TIP/
RING voltage on the line. Low-voltage countries should use a lower TIP/RING voltage. Rais-
ing the TIP/RING voltage can improve signal headroom.
For Si3011 line-side device, these bits may be written to a zero or one.
Minimum Operational Loop Current. Si3018 and Si3019 line-side only.
Adjusts the minimum loop current at which the DAA can operate. Increasing the minimum
operational loop current can improve signal headroom at a lower TIP/RING voltage.
For Si3011 line-side device, these bits may be written to a zero or one.
Current Limiting Enable.
0 = Current limiting mode disabled.
1 = Current limiting mode enabled. This mode limits loop current to a maximum of 60 mA per
the TBR21 standard.
DC Impedance Selection.
0 = 50  dc termination is selected. This mode should be used for all standard applications.
1 = 800  dc termination is selected.
These bits must always be written to 0.
DCV[1:0]
MINI[1:0]
DCV[1:0]
R/W
00
01
10
11
00
01
10
11
D6
DCT Pin Voltage
Min Loop Current
3.1 V
3.2 V
3.35 V
3.5 V
10 mA
12 mA
14 mA
16 mA
D5
MINI[1:0]
R/W
Rev. 1.4
D4
Function
D3
0
D2
0
ILIM
R/W
D1
DCR
R/W
D0