SI2457-D-FT Silicon Laboratories Inc, SI2457-D-FT Datasheet - Page 66

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

Specifications of SI2457-D-FT

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AN93
66
A,B,C,D,E,F,G,
+ES = A, B, C
Command
+DS44 =
A,B,C,D
+DS=
H,I
Table 39. Basic AT Command Set (Continued)
Controls V.42bis data compression function.
A
B
Controls V.44 data compression function*
A
B
C
D
E
F
G
H
I
*Note: Si2493 only
Enable synchronous access mode
A – specifies the mode of operation when initiating a modem
connection
B – This parameter should not be used.
C – Specifies the mode of operation when answer a modem
connection
completed and data state is entered.
Direction
0
1
2
3
Compression negotiation
0
1
C
D
Direction
0
1
2
3
Compression negotiation
0
1
Capability
0
1
2
Max_codewords_tx 256 to 65536
Max_codewords_rx 256 to 65536
Max_string_tx 32 to 255
Max_string_rx 32 to 255
Max_history_tx  512
Max_history_rx  512
D = Disable synchronous access mode
6 = Enable synchronous access mode when connection is
D = Disable synchronous access mode
8 = Enable synchronous access mode when connection is
completed and data state is entered.
Both Directions (V.42bis P0 = 11)
No compression (V.42bis P0 = 0)
Do not disconnect if Rec. V.42 is not negotiated
No compression (V.42bis P0 = 0)
Transmit only
Receive only
Do not disconnect if Rec. V.42 is not negotiated.
Disconnect is Rec. V.42 is not negotiated.
Max_dict 512 to 65535
Max_string 6 to 250
Transmit only
Receive only
Both Directions (V.42bis P0 = 11)
Disconnect is Rec. V.42 is not negotiated
Stream method
Packet method
Multi-packet method
Rev. 1.3
Action