E-STLC5048| Datasheet

E-STLC5048, E-STLC5048TR, STLC5048, STLC5048TR

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STLC5048
Fully programmable four-channel codec and filter
Features

Fully programmable monolithic 4-channel codec/filter Single +3.3 V supply A/m law programmable Linear coding (16 bits) option PCM highway format automatically detected: 1.536 or 1.544 MHz, 2.048, 4.096, 8192 MHz Two PCM ports available TX gain programming: 33 dB range; <0.01 dB step RX gain programming: 42 dB range; <0.01 dB step Programmable SLIC input impedance Programmable transhybrid balance filter Programmable equalization (frequency response) Programmable time slot assignment Digital and analog loopbacks SLIC control port static (16 I/Os), dynamic (12 I/Os + 4 CS) Built-in test mode with tone generation, MCU access to PCM data 64 TQFP (10x10mm) package Programmable SLIC line current limitation Programmable SLIC off-hook detection threshold
TQFP64 (10x10x1.4mm)

Description
The STLC5048 is a monolithic fully programmable 4-channel codec and filter. It operates with a single +3.3V supply. The analog interface is based on a receive output buffer driving the SLIC RX input and on an amplifier input stage normally driven by the SLIC TX output. Due to the single supply voltage a midsupply reference level is generated internally by the device and all analog signals are referred to this level (AGND). The PCM interface uses one common 8 kHz frame sync. pulse for transmit and receive direction. The bit clock is automatically detected between four standards: 1.563/1.544 MHz, 2.048 MHz, 4.096 MHz, 8192 MHz. Two PCM port are provided: the channels can be connected to port A or/and B. Device programmability is achieved by means of several registers and commands allowing to set the different parameters like TX/RX gains, line impedance, transhybrid balance, equalization (frequency response), encoding law (A/m), time slot assignment, independent channels power up/down, loopbacks, PCM bits offse
t. The STLC5048 can be programmed via serial interface running up to 8 MHz. One interrupt output pin is also provided. A GUI interface is also available to emulate and program the coefficients for impedance synthesis, echo cancelling and channel filtering.

November 2007

Rev 9

1/64
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