SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 63

• 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

U87 SAM
Reset settings = 0x0000
UAA V.29 Mode
Reset settings = 0x0000
15:11
Name
Name
15:2
Type
Type
Bit
7:0
Bit
10
Bit
Bit
9
8
1
0
XMTT[7:0] Transmitter Threshold
Reserved Reads returns to zero.
Reserved Reads returns to zero.
Reserved Read returns zero.
D15 D14 D13 D12 D11
D15 D14 D13 D12 D11 D10
V29ENA
SERM
FSMS
Name
Name
MINT
Minimal Transparency
0 = Generates two-byte <EM> transparency sequences. This option will use codes
<EM><T5> through <EM><T20>, if possible, for received data containing two back-to-back
bytes requiring transparency.
1 = Generates one-byte <EM> transparency sequences. This option will only use codes
<EM><T1> through <EM><T4> for received data.
Special Error Reporting Mode
0 = Ignore unrecognized in-band commands.
1 = Generate <EM><0x45> (“E” for error) in response to any unrecognized in-band com-
mands.
Framed Sub-Mode Startup
0 = Upon successful connection, enter Transport Sub-Mode. An <EM><FLAG> is
required to enter Framed Sub-Mode.
1 = Upon successful connection, immediately enter Framed Sub-Mode. The first
received <EM><err> from a successful hunt is transformed into an <EM><flag>.
This value represents the number of bytes before a transmission is started.
The following values are special:
0
255
0 = Disables V.29.
1 = Enables V.29.
The same as ten. Upon receipt of ten bytes, data is transferred. The DTE must supply
a closing flag within the required time or an underrun will occur.
The same as infinity, e.g. never start a packet until the closing flag is received.
MINT SERM FSMS
D10
R/W
R/W
D9
D9
Rev. 1.1
D8
R/W
D8
D7
Function
Function
D7
D6
D6
D5
D5
Si2457/34/15/04
D4
D4
XMTT[7:0]
R/W
D3
D3
D2
D2
V29ENA
D1
R/W
D1
D0
D0
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