|
The Si3038 is an integrated silicon Direct Access Arrangement (DAA) providing
an AC ‘97/MC ‘97 Rev. 2.1 compliant interface. The device can operate as a
primary or secondary codec on the AC-Link and can be connected directly to a
digital controller or system core logic.
The Si3038 provides a programmable line interface that adheres to global
telephone line standards including FCC, CTR21, JATE and numerous
country-specific PTTs. The Si3038 chip set is available in two 16-pin small
outline packages (AC ‘97 interface on Si3024 and phone-line interface on
Si3014). The chip set replaces the AFE (analog front end), isolation
transformer, relays, opto-isolators and 2–4 wire hybrid. Utilizing Silicon
Laboratories’ patented DAA technology, the Si3038 dramatically reduces the
number of discrete components and cost required to implement software modems
on modem riser (MR) cards, audio/modem riser (AMR) cards and mobile daughter
cards (MDC). The chip set is fully programmable for AC termination, DC
termination and ringer threshold to meet worldwide telephone line interface
requirements.
A pin-compatible North America/Japan chip set, the Si3036, is also available
for applications targeting FCC and JATE compliant designs. A single board
layout can support both North America/Japan-only requirements with the Si3036
or global requirements with the Si3038 International MC ‘97 Silicon DAA.
Si3038 Block Diagram
|
