RC224ATL View Datasheet(PDF) - Conexant Systems
Part Name
Description
MFG CO.
'RC224ATL' PDF : 104 Pages View PDF
RC224ATL/224ATLV
EmbeddedModem Family
5.0 S Registers
Table 5-2. S Register Description (3 of 8)
Register
S16
Default
00
S17
00
S18
00
S19
—
S20
0
Range
—
0-250
0-255
—
1-127
Units
Description
None
Modem Test Option. Controls the diagnostic modes as follows:
Bit 0 Local Analog Loopback L3 (See &T1 command)
0
Disabled (factory default)
1
&T1—Enabled
Bit 1 Reserved
Bit 2 Local Digital Loopback (See &T3 command)
0
Disabled (factory default)
1
&T3—Enabled
Bit 3 Remote Digital Loopback L2 (See &T6 command)
0
Disabled (factory default)
1
&T6—Enabled
4 ms Fax Mode Null Byte Timer. The value of S17 determines the
Increments length of time null bytes are sent by the modem if the last byte
sent during DTE underrun in Fax Mode is not a null byte.
0 ≤ S17 ≤ 250 corresponds to a timer value of 0–1 second (i.e.,
the timer value is the value of S17 times 4 ms).
Seconds
Test Timer. Sets the length of time the modem conducts a test
before returning to the command mode. If this register is zero, the
test will not automatically terminate; the test must be terminated
from the command mode by issuing an AT&T0 or ATH command.
— Not Supported
Seconds Fax Mode Inactivity Timer. S20 can be used to cause the modem
to automatically place the telephone on-hook or reset itself if
inactivity (of variable duration) is detected while in Fax Mode.
D224ATLVDSC
Conexant
5-5
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