SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 26

• 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-Si3008
26
+GCI = X
+GCI?
+GCI = ?
+IFC Options
+IFC = A
+IFC = A,B
+ITF Options
+ITF = A
+ITF = A,B
+ITF = A,B,C
Command
Table 11. Basic AT Command Set (Command Defaults in Bold) (Continued)
Country settings - Automatically configure all registers for a particular country.
X
0
16
20
26
27
35
50
51
53
6C
73
89
8A
9C
B8
B5
FE
Note: U-registers are configured to Silicon Laboratories’ recommended values. The +GCI command
List current country code setting (response is: + GCI:<setting>)
List all possible country code settings.
Specifies the flow control to be implemented.
A
B
Transmit flow control threshold.
A
B
C
Specifies the flow control method used by the modem to control data from the host
Specifies the flow control method used by the host to control data from the modem
0 None
1 Local XON/OFF flow control.
2 Hardware flow control (CTS).
Threshold above which the modem will generate a flow off signal
<0 to 511> bytes
Threshold below which the modem will generate a flow on signal
<0 to 511> bytes
Polling interval for <EM><BNUM> indicator
0 to 300 in 10 msec units.
0 None
1 Local XON/OFF flow control. Does not pass XON/XOFF character to the remote
2 Hardware flow control (RTS)
resets the U-registers and the S7 and S6 S-registers to default values before setting country-
specific values. Changes may be made by writing individual registers after sending the
AT+GCI command. Refer to “AN93: Modem Designer’s Guide” for details.
modem.
Country
Japan
Brazil
Canada
China
Columbia
Ecuador
Hong Kong
India
Malaysia
Philippines
Poland
Russia
Hungary
Mexico
Singapore
United States
Taiwan
Preliminary Rev. 0.7
Action