參數(shù)資料
型號(hào)： SI2457-D-GT
廠商： Silicon Laboratories Inc
文件頁(yè)數(shù)： 18/60頁(yè)
文件大?。?/td> 0K
描述： IC ISOMODEM GLOBAL DAA 24TSSOP
標(biāo)準(zhǔn)包裝： 62
系列： *
Si2457/34/15/04
Rev. 1.3
25
:U
User-Access Register Write—This command allows the user to write to the 16-bit user-
access registers. (See page page 44.) The format is “AT:Uaa,xxxx,yyyy,zzzz,...” where
aa = user-access address in hexadecimal.
xxxx = Data in hexadecimal to be written to location aa.
yyyy = Data in hexadecimal to be written to location (aa + 1).
zzzz = Data in hexadecimal to be written to location (aa + 2).
etc.
+DR=X
Data compression reporting.
X
Mode
0
Disabled
1
Enabled
If enabled, the intermediate result code is transmitted at the point after error control negotia-
tion. The format of this result code is as follows:
Result code
Mode
+DR:NONE
Data compression is not in use
+DR:V42B
Rec. V.42bis is in use in both directions
+DR:V42B RD
Rec. V.42bis is in use in receive direction only
+DR:V42B TD
Rec. V.42bis is in use in transmit directions only
+DS Options
+DS = A
+DS = A,B
+DS = A,B,C
+DS = A,B,C,D
Controls V.42bis data compression function.
A
Direction
0
No compression
1
Transmit only
2
Receive only
3
Both Directions
B
Compression_negotiation
0
Do not disconnect if V.42 is not negotiated.
1
Disconnect is V.42 is not negotiated.
C
Maximum dictionary size
512
D
Maximum string size
6 to 250 (28 default)
+ES Options
+ES = A
+ES = A,,C
Enable synchronous access mode.
A
Specifies the mode of operation when initiating a modem connection.
D Disable synchronous assess mode.
6
Enable synchronous access mode when connection is completed and data state is
entered.
B
Specifies fallback mode of operation.
This parameter should not be used.
C
Specifies the mode of operation when answer a modem connection.
D Disable synchronous assess mode.
8
Enable synchronous access mode when connection is completed and data state is
entered.
Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued)
Command
Action
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