Specifications

Si2404
30 Rev. 0.91
\Q3 Use RTS/CTS
\Q4 Use XON/XOFF flow control for modem-to-DTE interface. Does not enable modem-to-modem flow
control.
\Tn DTE rate—Change DTE rate. When the Si2404 is configured in autobaud mode (default), \T0
through \T15 will lock the new baud rate and disable autobaud. When the ISOmodem® is not in
autobaud mode (pin 18 low on powerup), the result code “OK” is sent at the old DTE rate. Subse-
quent commands must be sent at the new rate.
\T0 300 bps
\T1 600 bps
\T2 1200 bps
\T3 2400 bps
\T4 4800 bps
\T5 7200 bps
\T6 9600 bps
\T7 12.0 kbps
2
\T8 14.4 kbps
\T9 19.2 kbps
3
\T10 38.4 kbps
\T11 57.6 kbps
\T12 115.2 kbps
\T13 230.4 kbps
\T14 245.760 kbps
2
\T15 307.200 kbps
\T16 Autobaud on
3
\T17 Autobaud off; lock at current baud rate.
Table 12. Extended AT\ Command Set (Command Defaults in Bold) (Continued)
Command Action
Notes:
1. When in autobaud mode, \B0, \B1, and \P1 will not be detected automatically. The combination of \B2 and \P3 will be
detected. This is compatible with seven data bits, no parity, two stop bits. Seven data bits, no parity, one stop bit may be
forced by sending AT\T17\B1.
2. The autobaud feature does not detect this rate.
3. Default is \T9 if a pulldown resistor is connected to pin 18; otherwise, the default is \T16. (See "Autobaud" on page 14.)