Si3035
3.3 V FCC/JATE DIRECT ACCESS ARRANGEMENT
Features
Complete DAA includes the following:
!
3.3 V to 5 V Digital/Analog
Power Supplies
!
!
!
!
!
!
!
!
!
Support for Caller ID
Low Profile SOIC Packages
Direct Interface to DSPs
!
!
JATE Filter Option
86 dB Dynamic Range TX/RX
Paths
Integrated Modem Codec
Compliant with FCC Part 68
Low-Power Standby Mode
Proprietary ISOcap™ Technology
Pin Compatible with Si3034, Si3032
Optional IIR Digital Filter
!
Daisy-Chaining for Up to Eight
Devices
Ordering Information
See page 50.
!
!
Integrated Ring Detector
3000 V Isolation
Pin Assignments
Si3021 (SOIC)
Applications
! V.90 Modems
! Fax Machines
! Set Top Boxes
1
2
3
4
5
6
7
8
MCLK
FSYNC
SCLK
OFHK
RGDT/FSD
M0
16
15
14
13
12
11
10
9
! Voice Mail Systems
VD
VA
Description
SDO
GND
C1A
The Si3035 is an integrated direct access arrangement (DAA) chipset that
provides a digital, low-cost, solid-state interface to a telephone line.
Available in two 16-pin small outline packages, it eliminates the need for an
analog front end (AFE), an isolation transformer, relays, opto-isolators, and
a 2- to 4-wire hybrid. The Si3035 dramatically reduces the number of
discrete components and cost required to achieve compliance with FCC
Part 68. The Si3035 interfaces directly to standard modem DSPs and
supports all FCC and JATE out-of-band noise requirements. International
support is provided by the pin compatible Si3034.
SDI
FC/RGDT
RESET
M1
AOUT
Si3021 (TSSOP)
1
SDO
SDI
VD
16
2
3
4
5
6
7
8
SCLK
FSYNC
MCLK
OFHK
RGDT/FSD
M0
15
14
13
12
11
10
9
FC/RGDT
RESET
AOUT
M1
Functional Block Diagram
C1A
GND
VA
Si3021
Si3012
Si3012 (SOIC or TSSOP)
MCLK
SCLK
Out
In
TX
TSTA
TSTB
IGND
C1B
TX
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Hybrid
RX
FSYNC
SDI
Digital
Interface
NC
HYBD
RX
SDO
VREG2
VREG
DCT
REXT
DCT
HYBD
VREG2
VREG
FC/RGT
Isolation
Interface
Isolation
Interface
DC
RNG1
RNG2
QB
Termination
REXT
IGND
RGDT/FSD
OFHK
Ring Detect
Off-Hook
RNG1
RNG2
QB
QE
Control
Interface
MODE
RESET
QE
US Patent # 5,870,046
US Patent # 6,061,009
Other Patents Pending
AOUT
Rev. 1.2 12/00
Copyright © 2000 by Silicon Laboratories
Si3035-DS12