SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 59

• 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

U78 GEN3
Reset settings = 0x00XX
15:14
Name
13:8
Type
Bit
7:0
Bit
Reserved Read returns zero.
D15
IB[1:0]
IS[7:0]
Name
IB[1:0]
R/W
D14
Intrusion Blocking.
Defines the method used to block the off-hook intrusion algorithm from operation after dialing
has begun.
0 = No intrusion blocking.
1 = Intrusion disabled from start of dial to end of dial.
2 = Intrusion disabled from start of dial to IS register time-out.
3 = Intrusion disabled from start of dial to connect (“CONNECT XXX”, “NO DIALTONE”, or
“NO CARRIER”).
Intrusion Suspend (500 ms units).
When IB = 2, this register sets the length of time from when dialing begins that the off-hook
intrusion algorithm is blocked (suspended) (default = 00000000
D13
D12
D11
D10
D9
Rev. 1.1
D8
Function
D7
D6
D5
Si2457/34/15/04
D4
b
IS[7:0]
).
R/W
D3
D2
D1
D0
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