SI3015-FS Silicon Laboratories Inc, SI3015-FS Datasheet - Page 35

• Manufacturer Part Number: SI3015-FS
• Description: SI2400 ISOMODEM LINE-SIDE
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3015-FS

• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Baud Rates: -

Intermessage Timing
Intermessage timing is accomplished in three ways,
relative to the end of the previous message (“,” result
code), relative to the Kissoff Tone (“K” result code) or
relative to the Kissoff timeout (“^” result code).
If the intermessage timing is relative to the end of the
previous message (S36[3:2] [IDKT] = 10b or 11b), the
intermessage timer begins with the “,” result code. The
Si2400 sends an “N” to mark the time in which the
intermessage timer has timed out. If another message
is received prior to the “N”, the Si2400 keeps the
message and sends it to the receiver at the time the “N”
is sent.
If a message is not received within the time frame
defined by “,” and “N”, the Si2400 sends nothing, waits
for the next message and transmits the message as
S-Register
S2B
S2C
S2D
S2E
S1F
S36
S38
S39
Bits
7:5
4:0
7:0
7:0
7:0
7:0
7:6
5:4
3:2
1:0
6:5
4:2
1:0
7:0
7
Alarm 3
Alarm 1
Alarm 2
Name
DTTO
RTCT
IDKT
PON
DBD
HMT
KOT
SDL
POF
DCF
CDT
DTL
IMT
HF
IT
Reconfigured from ATTD in !7 mode.
Reconfigured from SDL in !7 mode to pulse interdigit time (5/3 ms units).
Kissoff timeout.
Intermessage timing.
Reconfigured from DTL in !7 mode to pulse on time (5/3 ms units).
Reconfigured from DTTO in !7 mode to pulse off time (5/3 ms units).
Reconfigured from RTLT in !7 mode to handshake end to data TX delay
(10 ms units).
Reconfigured from SKDTL in !7 mode.
Pulse off time.
Pulse on time.
Intermessage delay and Kissoff timeout.
Interdigit timing.
Only used in !7 mode.
Delay before data.
Data carrier frequency.
Handshake minimum tone.
Handshake frequency.
Reconfigured from CDT in !7 mode to handshake tone timeout.
Table 20. !7 Parameters
Rev. 1.1
soon as the host sends the message. This message
may not be accepted by the alarm receiver.
If the intermessage timing is relative to the end of the
Kissoff Tone, the timing begins when the “K” result code
is sent. In the event a kissoff tone was not detected, the
intermessage timing begins when the “^” is sent.
Returning to Command Mode
To return to command mode, the host sends any
character except the “~” and “!” characters. The
example here uses a <CR> to escape.
Once in command mode, all of the AT commands are
available.
ATH<CR>
Is used to hang up the line. Note that it is
the responsibility of the host to hang up the
line.
Function
Si2400
35