SI2400 Datasheet, PDF (1/76 Pages) List of Unclassifed Manufacturers – V.22BIS ISOMODEM™ WITH INTEGRATED GLOBAL DAA

Si2400
V. 2 2 B I S I S O M O D E M ™ W I T H I N T E G R A T E D G L O B A L D A A
Features
! Data Modem Formats
! Integrated DAA
" 2400 bps: V.22bis
" Capacitive Isolation
" 1200 bps: V.22, V.23, Bell 212A
" Parallel Phone Detect
" 300 bps: V.21, Bell 103
" Globally Compliant Line Interface
" V.25 Fast Connect and V.23 Reversing " Overcurrent Protection
" SIA and other security protocols
! AT Command Set Support
! Caller ID Detection and Decode ! Integrated Voice Codec
! DTMF Tone Gen./Detection
! PCM Data Pass-Through Mode
! 3.3 V or 5.0 V Power
! HDLC Framing in Hardware
! UART with Flow Control
! Call Progress Support
Applications
! Set Top Boxes
! Power Meters
! Security Systems ! Medical Monitoring
! ATM Terminals
! Point-of-Sale
Description
The Si2400 ISOmodem™ is a complete modem chipset with integrated
direct access arrangement (DAA) that provides a programmable line
interface to meet global telephone line requirements. Available in two 16-
pin small outline (SOIC) packages, it eliminates the need for a separate
DSP data pump, modem controller, analog front end (AFE), isolation
transformer, relays, opto-isolators, 2- to 4-wire hybrid, and voice codec.
The Si2400 is ideal for embedded modem applications due to its small
board space, low power consumption, and global compliance.
Functional Block Diagram
TXD
RXD
RESET
EOFR/GPIO1
AIN/GPIO2
ESC/GPIO3
ALERT/GPIO4
CTS
CLKOUT
XTALI
XTALO
Si2400
µ Controller
(AT Decoder
Call Progress)
Control
Interface
DSP
(Data Pump)
Clock
Interface
Audio
Codec
AOUT
Si3015
Hybrid
and
DC
Termination
Ring Detect
Off-Hook
RX
FILT
FILT2
REF
DCT
VREG2
REXT
REXT2
RNG1
RNG2
QB
QE
QE2
Si2400
Si3015
Ordering Information
See page 71.
Pin Assignments
Si2400
XTALI
XTALO
CLKOUT
V_D
TXD
RXD
CTS
RESET
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
Si3015
EOFR/GPIO1
AIN/GPIO2
ESC/GPIO3
ISOB
GND
C1A
ALERT/GPIO4
AOUT
QE2 1
DCT 2
IGND 3
C1B 4
RNG1 ₅
RNG2 ₆
QB ₇
QE ₈
16 FILT2
15 FILT
14 RX
13 ^REXT
12 ^REXT2
11 ^REF
10 ^VREG2
9 ^VREG
Patents pending
Rev. 0.95 4/00
Copyright © 2000 by Silicon Laboratories
Si2400-DS095