SI2400-BSR Silicon Laboratories Inc, SI2400-BSR Datasheet - Page 74
SI2400-BSR
Manufacturer Part Number
SI2400-BSR
Description
Telecom Line Management ICs CONTACT SILICON LABS FOR AVAILABILITY
Manufacturer
Silicon Laboratories Inc
Type
Integrated Global DAAr
Datasheet
1.SI2400-BS.pdf
(94 pages)
Specifications of SI2400-BSR
Product
Modem Chip
Supply Voltage (min)
3 V
Supply Current
21 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
SOIC-16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Si2400
SF5 (DAA5). DAA Low Level Functions 5
Reset settings = 0000_1000
74
Name
Type
Bit
3:2
Bit
7
6
5
4
1
0
FULL
R/W
D7
Name
DCTO
FULL
OHS
ACT
DCT
RZ
RT
DCTO
R/W
D6
Full Scale.
0 = Si3015 ADC/DAC full scale > –1 dBm.
1 = Si3015 ADC/DAC full scale > 3.2 dBm.
This bit changes the full scale of the ADC and DAC from –1 dBm min. to 3.2 dBm min. In
order to use this bit, the R2 resistor must be changed from 402 Ω to 243 Ω and ACT
(SF5, bit 4) must be set to 0. This bit is intended for use only in voice communications
and may be used in PCM modes.
DC Termination Off.
0 = Normal operation. The OFF bit must always be set to 0 when on-hook.
1 = DC termination disabled and the device presents an 800 Ω dc impedance to the line
which is used to enhance operation with an off-hook parallel phone.
On-Hook Speed (See Table 13 and “Appendix A—DAA Operation”).
0 = The Si2400 will execute a fast on-hook.
1 = The Si2400 will execute a slow, controlled on-hook.
AC Termination (See Table 13 and “Appendix A—DAA Operation”).
0 = Real impedance.
1 = Complex impedance.
DC Termination Voltage (See Table 13 and “Appendix A—DAA Operation”).
00 = Low Voltage Mode (transmit level = –5 dBm).
01 = Japan mode (transmit level = –3 dBm).
10 = USA mode (transmit level = –1 dBm).
11 = CTR21/France current limit mode (transmit level = –1 dBm).
Ringer Impedance.
0 = Maximum (high) ringer impedance.
1 = Synthesize ringer impedance.
Ringer Threshold Select.
Used to satisfy country requirements on ring detection. Signals below the lower level will
not generate a ring detection; signals above the upper level are guaranteed to generate
a ring detection.
0 = 11 to 22 VRMS.
1 = 17 to 33 V
b
(0x08)
OHS
R/W
D5
RMS
ACT
R/W
D4
.
D3
Rev. 1.3
DCT
R/W
D2
Function
R/W
D1
RZ
R/W
D0
RT
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