Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 65)

AN93
Rev. 1.3 65
*Y[sequence]
Special Access Mode—This command enables special modes and
data memory access.
[sequence]
Description
254:Waaaa,dddd Write hexadecimal data value dddd to
hexadecimal data address
aaaa. Only one 254:W command per line.
254:Qaaaa Read hexadecimal address aaaa. Returns
hexadecimal data value
dddd. Only one 254:Q command per line.
2 Enable continuous answer tone for the
ATA command. Use ATZ to clear this
mode. For example, the single-line, multi-
ple command is AT*Y2A.
1 Enable continuous DTMF tone for first digit
used in the ATD command. Use ATZ to
clear this mode. For example, the single-
line, multiple command for a continuous
DTMF “1” digit would be AT*Y1D1.
0 Exit from 254:W or 254:Q access mode.
Must reside on a separate line and must
be the final sequence be sent after the
final 254:W or 254:Q command.
+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 negotiation. 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
+DR:V44 Rec. V.44 is in use in both directions
+DR:V44 RD Rec. V.44 is in use in receive direction only
+DR:V44 TD Rec. V.44 is in use in transmit directions only
Table 39. Basic AT Command Set (Continued)
Command Action