SI2438FT18-EVB Silicon Laboratories Inc, SI2438FT18-EVB Datasheet - Page 75
SI2438FT18-EVB
Manufacturer Part Number
SI2438FT18-EVB
Description
BOARD EVAL SI2438+SI3018 24PIN
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3050-E-FM.pdf
(128 pages)
Specifications of SI2438FT18-EVB
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Register 17. International Control 2
Reset settings = 0000_0000
Bit
7
6
5
4
3
2
Name
Type
Bit
MCAL
Name
CALD
CALZ
OPE
RT2
BTE
CALZ
R/W
D7
Clear ADC Calibration.
0 = Normal operation.
1 = Clears the existing ADC calibration data. This bit must be written back to 0 after being set.
Manual ADC Calibration.
0 = No calibration.
1 = Initiate manual ADC calibration.
Auto-Calibration Disable.
0 = Enable auto-calibration.
1 = Disable auto-calibration.
Ringer Threshold Select 2. Si3018 and Si3019 line-side only.
This bit, in combination with the RT bit, is used to satisfy country requirements on ring detec-
tion. Signals below the lower level do not generate a ring detection; signals above the upper
level are guaranteed to generate a ring detection.
RT
0
0
1
1
For Si3011 line-side device, always write this bit to zero.
Overload Protect Enable.
0 = Disabled.
1 = Enabled.
The OPE bit should always be cleared before going off-hook.
Billing Tone Detect Enable.
The DAA can detect events, such as billing tones, that can cause a disruption in the line-side
power supply. When this bit is set, the device will maintain off-hook during such events. If a
billing tone is detected, the BTD bit (Register 17, bit 0) is set to indicate the event. Writing this
bit to zero clears the BTD bit.
0 = Billing tone detection disabled. The BTD bit is not functional.
1 = Billing tone detection enabled. The BTD bit is not functional.
MCAL
RT2
R/W
D6
0
1
0
1
CALD
R/W
D5
RT Lower level
13.5 V
Reserved, do not use this setting.
19.35 V
40.5 V
Rev. 1.4
rms
rms
rms
R/W
RT2
D4
Function
Si3050 + Si3011/18/19
OPE
R/W
D3
16.5 V
23.65 V
49.5 V
RT Upper level
rms
RMS
RMS
BTE
R/W
D2
ROV
R/W
D1
BTD
D0
R
75
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