SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 51

• Manufacturer Part Number: SI2457-C-FT
• Description: IC ISOMODEM SYSTEM-SIDE 24TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-C-FT

• Package / Case: 24-TSSOP
• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.32, V.34, V.90, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: Parallel, UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Operating Frequency: 4.92 MHz
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current: 26 mA
• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

U67 ITC1
Reset settings = 0x0008
U68 ITC2
Reset settings = 0x0000
Name
Name
15:2
15:1 Reserved Read returns zero.
Type
Type
Bit
Bit
Bit
Bit
1
0
0
Reserved Do not modify.
Reserved Read returns zero.
D15 D14 D13 D12 D11
D15 D14 D13 D12 D11 D10
Name
Name
ROV
RT
Ringer Threshold Select.
Used to satisfy country requirements on ring detection. Signals below the lower level does 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
Receive Overload.
The bit is set when the receive input (i.e., receive pin goes below ground) has an excessive
input level. This bit is cleared by writing a 0 to this location.
0 = Normal receive input level.
1 = Excessive receive input level.
rms
rms
.
.
D10
Preliminary Rev. 0.7
D9
D9
D8
D8
D7
Si2457/34/15/04-Si3008
D7
Function
Function
D6
D6
D5
D5
D4
D4
D3
D3
D2
D2
ROV
R/W
D1
D1
R/W
RT
D0
D0
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