SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 48

• 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

Si2457/34/15/04
6.1. Bit-Mapped U-Register Detail (defaults in bold)
U4D MOD1
Reset settings = 0x0000
48
Name
Type
Bit
2:0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
D15
Reserved Read returns zero.
Reserved Read returns zero.
Reserved Read returns zero.
Reserved Read returns zero.
Reserved Read returns zero.
SPDM
NHFD
Name
TOCT
NHFP
CLPD
GT18
GT55
CTE
FTP
TOCT
D14
R/W
Turn Off Calling Tone.
0 = Disable.
1 = Enable.
No Hook Flash Pulse.
0 = Disable.
1 = Enable.
No Hook Flash Dial.
0 = Disable.
1 = Enable.
Check Loop Current Before Dialing.
0 = Ignore.
1 = Check.
Force Tone or Pulse.
0 = Disable.
1 = Enable.
Skip Pulse Dial Modifier.
0 = No.
1 = Yes.
1800 Hz Guard Tone Enable.
0 = Disable.
1 = Enable.
550 Hz Guard Tone Enable.
0 = Disable.
1 = Enable.
Calling Tone Enable.
0 = Disable.
1 = Enable.
D13 D12
NHFP NHFD
R/W
D11
R/W
CLPD
D10
R/W
D9
Rev. 1.1
FTP SPDM
D8
R/W
Function
D7
R/W
D6
GT18
R/W
D5
GT55
D4
R/W
CTE
D3
R/W
D2
D1
D0