SI2404-C-FT Silicon Laboratories Inc, SI2404-C-FT Datasheet - Page 43

• Manufacturer Part Number: SI2404-C-FT
• Description: IC ISOMODEM W/ERROR CORR 24TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2404-C-FT

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.29, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: Parallel, UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register
U1C
U1D
U2C
U2D
U1A
U1B
U1E
U1F
U2A
U2B
U2E
U2F
U17
U18
U19
U20
U21
U22
U23
U24
U25
U26
U27
U28
U29
U30
U31
U32
BT1A0
BT1B1
BT1B2
BT1A2
BT1A1
BT2A0
BT2B1
BT2B2
BT2A2
BT2A1
BT3A0
BT3B1
BT3B2
BT3A2
BT3A1
BT4A0
BT4B1
BT4B2
BT4A2
BT4A1
BTON
BMOT
RMTT
Name
BTOF
BMTT
RDLT
BDLT
BTK
Description
BT1 registers set the coefficients for stage 1 of the Busy Tone Detect filter.
Default is for FCC countries. See “AN93: Modem Designer’s Guide” for other
country settings.
Busy tone detect filter stage 2 biquad coefficients.
Busy tone detect filter stage 3 biquad coefficients.
Busy tone detect filter stage 4 biquad coefficients.
Busy tone detect filter output scaler.
Busy tone detect ON threshold.
Busy tone detect OFF threshold.
Busy cadence minimum total time in seconds multiplied by 7200.
See “AN93: Modem Designer’s Guide” for details.
Busy cadence delta in seconds multiplied by 7200.
Busy cadence minimum on time in seconds multiplied by 7200.
Ringback cadence minimum total time in seconds multiplied by 7200.
Ringback cadence delta in seconds multiplied by 7200.
Table 16. U-Register Description (Continued)
Rev. 1.1
Si2457/34/15/04
0xC4F4
0xB50A
Default
0x00A0
0x6EF1
0xC000
0x00A0
0x78B0
0xC305
0x70D2
0xC830
0x80E2
0x00A0
0xEF10
0x0800
0x0000
0x0000
0x0000
0x0000
0x0000
0x4000
0x0400
0x4000
0x0009
0x0070
0x0870
0x25F8
0x0438
0x4650
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