SI2457-D-FS Silicon Laboratories Inc, SI2457-D-FS Datasheet - Page 283
SI2457-D-FS
Manufacturer Part Number
SI2457-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2457-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 283 of 304
- Download datasheet (5Mb)
Details of Some Low-Speed Protocols
The following annotated recordings give basic ideas of what to expect the EPOS modem transactions will look like.
There are many possible variations of these examples, both in and out of compliance with published standards, in
common use. There are also very unusual variations that Silicon Labs has made efforts to support in order to allow
customers to connect to non-standard and essentially broken modems. Some of these are described in a later
section.
Bell 212 (2225 Hz
Answer Tone)
DTMF dialing
DTMF dialing
2100 Hz
Answer Tone
Figure 64. Appearance of Bell 212 Protocol
Figure 65. Appearance of V.22 Protocol
Rev. 1.3
Unscrambled Binary
Ones (USB1) signal.
Two tones at 2250 and
2850 Hz.
Scrambled Binary
Ones and Scrambled
Data; visually indis-
tinguishable from each
other.
Calling modem’s
Scrambled Binary
Ones and Scrambled
Data; visually indis-
tinguishable from
each other.
Calling modem’s
Scrambled Binary
Ones and Scrambled
Data; visually indis-
tinguishable from
each other.
Answering modem’s
Scambled Binary
Ones and Scrambled
Data; visually indis-
tinguishable from
each other.
AN93
283
Related parts for SI2457-D-FS
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
TSSOP 24/C/56 KBPS, V.90 ISOMODEM SYSTEM-SIDE
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
TSSOP 24/I/56 KBPS, V.90 ISOMODEM SYSTEM-SIDE
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM SYSTEM-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM SYSTEM-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM SYSTEM-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
SMD/C/SINGLE-ENDED OUTPUT SILICON OSCILLATOR
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 AES KEYFOB DEMO WITH LCD RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 SIMPLIFIED KEY FOB DEMO WITH LED RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A/-40 TO 85 OC/EZLINK MODULE; F930/4432 HIGH BAND (REV E/B1)
Manufacturer:
Silicon Laboratories Inc