SI2493-C-GT Silicon Laboratories Inc, SI2493-C-GT Datasheet - Page 42

• Manufacturer Part Number: SI2493-C-GT
• Description: IC ISOMODEM SYSTEM-SIDE 24TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-C-GT

• 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: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN93
3.1.9. Extended AT Commands
The extended AT commands, described in Tables 19–21, are supported by the Si2493/57/34/15/04.
42
Notes:
Command
&G17
&G10
&G11
&G12
&G13
&G14
&G15
&G16
1. The initial number attempted to test for an outside line is controlled by S51 (default = 1).
2. AT&$ reflects the last AT&P command issued but does not reflect any subsequent changes made by writing U-registers
&D1
&Gn
&G3
&G4
&G5
&G6
&G7
&G8
&G9
&H0
&Dn
&D0
&D2
&D3
&Hn
&H1
&$
with AT:U.
Display AT& current settings (see text for details).
Escape Pin Function (Similar to DTR)
ESC (pin 22) is not used
ESC (pin 22) escapes to command mode from data mode if also enabled by HES U70, bit 15.
ESC (pin 22) assertion during a modem connection causes the modem to go on-hook and return to
command mode.
ESC (pin 22) assertion causes ATZ command (reset and return OK result code).
Line connection rate limit—This command sets an upper limit on the line speed that the
Si2493/57/34/15/04 can connect. Note that the &Hn commands may limit the line speed as well
(&Gn not used for &H0 or &H1). Not all modulations support rates given by &G. Improper settings
are ignored.
1200 bps max
2400 bps max
4.8 kbps max.
7.2 kbps max.
9.6 kbps max.
12 kbps max.
14.4 kbps max (default for Si2415).
16.8 kbps max.
19.2 kbps max.
21.6 kbps max.
24 kbps max.
26.4 kbps max.
28.8 kbps max.
31.2 kbps max.
33.6 kbps max (default for Si2457 transmit and Si2434).
Switched network handshake mode—&Hn commands must be on a separate command line from
ATD, ATA, or ATO commands.
V.90 with automatic fallback (56 kbps to 300 bps) (default for Si2457).
V.90 only (56 kbps to 28 kbps).
Table 19. Extended AT& Command Set
Rev. 0.9
Action