SI3016-F-FS Silicon Laboratories Inc, SI3016-F-FS Datasheet - Page 36

• Manufacturer Part Number: SI3016-F-FS
• Description: IC ISOMODEM LINE-SIDE DAA 16SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Chipsetr

Specifications of SI3016-F-FS

• Package / Case: 16-SOIC (3.9mm Width)
• Data Format: V.90
• Baud Rates: 56k
• Interface: Serial
• Voltage - Supply: 3.3V, 5V
• Mounting Type: Surface Mount
• Product: Modem Chip
• Supply Current: 0.3 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si3016
Register 16. International Control 1
Reset settings = 0000_1000
36
Bit
3:2
7
6
5
4
1
0
Name
Type
Bit
OFF/SQL2 DC Termination Off (DAA is off-hook).
Reserved Read returns zero.
DCT[1:0]
Name
OHS
ACT
RZ
RT
OFF/SQL2
R/W
D7
When the DAA is off-hook, this bit functions as the DC Termination Off bit. When the DAA is
on-hook, this bit functions as the Enhanced Ring Detect Network Squelch bit.
0 = Normal operation.
1 = DC termination disabled and the device presents an 800 Ω dc impedance to the line
which is used to enhance operation with a parallel phone. The DCT pin voltage is also
reduced for improved low line voltage performance.
Enhanced Ring Detect Network Squelch (DAA is on-hook).
To properly receive caller ID data, this bit must be set following a polarity reversal or ring sig-
nal detection and must be left enabled during the reception of caller ID data. It should be dis-
abled before the start of the next ring signal. It is used to recover the offset on the RNG1/2
pins after a polarity reversal or ring signal.
0 = Normal operation.
1 = Enhanced squelch function is enabled.
On-Hook Speed.
0 = The Si3016 will execute a fast on-hook. (Off-hook counter = 1024/Fs seconds.)
1 = The Si3016 will execute a slow, controlled on-hook. (Off-hook counter = 4096/Fs
seconds.)
AC Termination Select.
0 = Selects the real impedance.
1 = Selects the complex impedance.
DC Termination Select.
00 = Low Voltage Mode. (Transmit level = –5 dBm).
01 = Japan Mode. Lower voltage mode. (Transmit level = –3 dBm).
10 = FCC Mode. Standard voltage mode. (Transmit level = –1 dBm).
11 = CTR21 Mode. Current limiting mode. (Transmit level = –1 dBm).
Ringer Impedance.
0 = Maximum (high) ringer impedance.
1 = Synthesized ringer impedance. C15, R14, Z2, and Z3 must not be installed when setting
this bit. See "4.12. Ringer Impedance" on page 18.
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 V
1 = 17 to 33 V
OHS
R/W
D6
RMS
RMS
ACT
R/W
D5
Rev. 1.0
D4
Function
D3
DCT[1:0]
R/W
D2
R/W
D1
RZ
R/W
D0
RT