SI3050-E-FM Silicon Laboratories Inc, SI3050-E-FM Datasheet - Page 82
SI3050-E-FM
Manufacturer Part Number
SI3050-E-FM
Description
IC VOICE DAA GCI/PCM/SPI 24-QFN
Manufacturer
Silicon Laboratories Inc
Series
-r
Datasheet
1.SI3050-E-FM.pdf
(128 pages)
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
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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
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