SI2493-C-FS Silicon Laboratories Inc, SI2493-C-FS Datasheet - Page 34

• Manufacturer Part Number: SI2493-C-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-C-FS

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN93
34
:U
+DR=X
+DS=
A,B,C,D
Command
U-Register Write—This command writes to the 16-bit U-Registers. The format is
AT:Uhh,xxxx,yyyy,zzzz,..., where
hh = user-access address in hexadecimal.
xxxx = data in hexadecimal to be written to location hh.
yyyy = data in hexadecimal to be written to location (hh + 1).
zzzz = data in hexadecimal to be written to location (hh + 2).
etc.
Only one :U command is allowed per AT command line.
Data compression reporting.
X
0
1
If enabled, the intermediate result code is transmitted at the point after error control negotiation.
The format of this result code is as follows:
Result code
+DR:NONE
+DR:V42B
+DR:V42B RD
+DR:V42B TD
+DR:V44
+DR:V44 RD
+DR:V44 TD
Controls V.42bis data compression function.
A
B
Mode
Disabled
Enabled
Direction
0
1
2
3
Compression_negotiation
0
1
C
D
Both Directions (V.42bis P0 = 11)
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
Table 18. Basic AT Command Set (Continued)
Mode
Data compression is not in use
Rec. V.42bis is in use in both directions
Rec. V.42bis is in use in receive direction only
Rec. V.42bis is in use in transmit directions only
Rec. V.44 is in use in both directions
Rec. V.44 is in use in receive direction only
Rec. V.44 is in use in transmit directions only
Rev. 0.9
Action