PROGRAMMABLE MONOLITHIC 4 CHAN-

NEL CODEC/FILTER

SINGLE +3.3V SUPPLY

PIN STRAP / MCU CONTROL MODE

A/

µ LAW PROGRAMMABLE

LINEAR CODING (16 BITS) OPTION

PCM HIGHWAY FORMAT AUTOMATICALLY

DETECTED: 1.536 or 1.544MHz; 2.048, 4.096,

8192 MHz

TX GAIN PROGRAMMING: 16dB RANGE;

<0.1dB STEP

RX GAIN PROGRAMMING: 26dB RANGE;

<0.1dB STEP

PROGRAMMABLE

TIME

SLOT

ASSIGN-

MENT

DIGITAL AND ANALOG LOOPBACKS

SLIC CONTROL PORT

STATIC MODE (16 I/Os)

DYNAMIC MODE (12 I/Os + 4 CS)

64 TQFP PACKAGE

PCM IN HI-Z MODE

DESCRIPTION

The STLC5046 is a monolithic 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. Due to the single

supply voltage a proper midsupply reference level

is generated internally by the device and all ana-

log signals are referred to this level (AGND). The

PCM interface uses one common 8KHz frame

sync. pulse for transmit and receive direction. The

bit clock can be selected between four standards:

1.536/1.544MHz,

2.048MHz,

4.096MHz,

8192MHz. Device programmability is achieved

by means of 41 registers allowing to set the dif-

ferent parameters like TX/RX gains, encoding law

(A/

µ), time slot assignment, independent chan-

nels power up/down, loopbacks, PCM bits offset.

Thanks to pinstrap option, the most significant of

the above parameters can be set by hardware

connection of dedicated pins. This allow to use

this device also on line card without MCU on

board. When pin strap option is selected different

pins of the device will change their function (see

pin description).

In MCU control mode the STLC5046 can be pro-

grammed via serial interface running up to 4MHz.

One interrupt output pin is also provided.

This is preliminary information on a new product now in development. Details are subject to change without notice.

December 1999

®

TQFP64

ORDERING NUMBER: STLC5046

STLC5046

PROGRAMMABLE FOUR CHANNEL CODEC AND FILTER

PRODUCT PREVIEW

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