SI3015-F-FS Silicon Laboratories Inc, SI3015-F-FS Datasheet - Page 35

• Manufacturer Part Number: SI3015-F-FS
• Description: IC ISOMODEM LINE-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Chipsetr

Specifications of SI3015-F-FS

• Package / Case: 16-SOIC (3.9mm Width)
• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Product: Modem Chip
• Supply Voltage (min): 3 V
• Supply Current: 26 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Baud Rates: -
• Lead Free Status / Rohs Status: Compliant

6. User-Access Registers (U-Registers)
The :U AT command is used to write these 16-bit U-registers, and the :R command is used to read them. U-
registers are identified by a hexidecimal (hex) address.
Register
U0A
U0B
U0C
U0D
U0E
U00
U01
U02
U03
U04
U05
U06
U07
U08
U09
U0F
U10
U12
U13
U14
U15
U16
U11
DT1A0
DT1B1
DT1B2
DT1A2
DT1A1
DT2A0
DT2B1
DT2B2
DT2A2
DT2A1
DT3A0
DT3B1
DT3B2
DT3A2
DT3A1
DT4A0
DT4B1
DT4B2
DT4A2
DT4A1
Name
DTON
DTOF
DTK
Description
DT1 registers set the coefficients for stage 1 of the Dial Tone Detect filter.
Default is for FCC countries. See “AN70: Si2456/Si2433/Si2414/Si2403
Modem Designer’s Guide” for other country settings.
Dial tone detect filters stage 2 biquad coefficients.
Dial tone detect filters stage 3 biquad coefficients.
Dial tone detect filters stage 4 biquad coefficients.
Dial tone detect filter output scaler.
Dial tone detect ON threshold.
Dial tone detect OFF threshold.
Table 14. U-Register Descriptions
Rev. 1.2
Si2403
0xC4F4
0xB50A
Default
0x00A0
0x6EF1
0xC000
0x00A0
0x78B0
0xC305
0x70D2
0xC830
0x80E2
0x00A0
0x0800
0x0000
0x0000
0x0000
0x0000
0x0000
0x4000
0x0400
0x4000
0x0009
0x0070
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