3.3 V FCC/JATE DIRECT ACCESS ARRANGEMENT - Silicon Laboratories
Description
Si3035
3 .
3 V FCC/ JAT E D I R E C T A C C E S S A R R A N G E M E N T
Features
Complete DAA includes the following:
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3.
3 V to 5 V Digital/Analog Power Supplies JATE Filter Option 86 dB Dynamic Range TX/RX Paths Daisy-Chaining for Up to Eight Devices Integrated Ring Detector 3000 V Isolation
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Support for Caller ID Low Profile SOIC Packages Direct Interface to DSPs Integrated Modem Codec Compliant with FCC Part 68 Low-Power Standby Mode Proprietary ISOcap™ Technology Pin Compatible with Si3034, Si3032 Optional IIR Digital Filter
Ordering Information See page 50.
Pin Assignments
Applications
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Si3021 (SOIC)
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V.
90 Modems Voice Mail Systems
Fax Machines Set Top Boxes
MCLK FSYNC SCLK VD SDO SDI FC/RGDT RESET
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
OFHK RGDT/FSD M0 VA GND C1A M1 AOUT
Description
The Si3035 is an integrated direct access arrangement (DAA) chipset that provides a digital, lo w-cost, solid-state in terface to a t elephone lin e.
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- t o 4-wire hybrid.
T he Si3 035 dra matically red uces the num ber of discrete c omponents an d c ost required t o achieve c ompliance with F CC Part 6 8.
The Si3 035 int erfaces d irectly to s tandard modem DSPs and supports all F CC an d J ATE o ut-of-band noi se req uirements.
International support is provided by the pin compatible Si3034.
Si3021 (TSSOP)
SDO SDI FC/RGDT RESET AOUT M1 C1A GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VD SCLK FSYNC MCLK OFHK RGDT/FSD M0 VA
Functional Block Diagram
Si3021
Si3012
Si3012 (SOIC or TSSOP)
MCLK SCLK FSYNC SDI SDO FC/RG T Isolation Interfa ce Isolation Interface DC Termination VREG 2 VREG DCT REXT IG ND RNG 1 RNG 2 O ff-Hook QB QE Digital Interface Hybrid O ut In TX RX HYBD
TSTA TSTB IGND C1B RNG1 RNG2 QB QE
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
TX NC RX REXT DCT HYBD VREG2 VREG
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