GC5018 datasheet(2/115 Pages) TI

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Contents

General Description

GC5018

8-CHANNEL WIDEBAND RECEIVER

SLWS169 – MAY 2005

Introduction

............................................... 1

5.1

Digital Receive Section Signals

.................... 105

1.1

FEATURES

........................................... 1

5.2

Microprocessor Signals

............................ 108

1.2

APPLICATIONS

...................................... 1

5.3

JTAG Signals

...................................... 109

General Description

..................................... 2

5.4

Factory Test and No Connect Signals

............. 109

RECEIVE DIGITAL SIGNAL PROCESSING

......... 3

5.5

Power and Ground Signals

........................ 110

3.1

Receive Input Interface

............................... 4

5.6

Digital Supply Monitoring

.......................... 110

3.2

DDC Organization

................................... 15

5.7

JTAG

............................................... 110

GC5018 GENERAL CONTROL

....................... 42

SPECIFICATIONS

..................................... 111

4.1

Microprocessor Interface Control Data, Address,

6.1

ABSOLUTE MAXIMUM RATINGS

................. 111

and Strobes

......................................... 43

6.2

RECOMMENDED OPERATING CONDITIONS

... 111

4.2

Synchronization Signals

............................. 45

6.3

THERMAL CHARACTERISTICS

.................. 111

4.3

Interrupt Handling

................................... 46

6.4

DC CHARACTERISTICS

.......................... 112

4.4

GC5018 Programming

.............................. 47

6.5

AC TIMING CHARACTERISTICS

................. 112

GC5018 PINS

........................................... 105

The GC5018 is a multi-channel communications signal processor that provides digital downconversion

optimized for cellular base transceiver systems. The device supports UMTS, CDMA-1X and TD-SCDMA

air interface cellular standards.

The chip provides up to 8 UMTS digital downconverter channels (DDC), 16 CDMA DDCs or 16

TD-SCDMA DDCs. The DDC channels are independent and operate simultaneously.

The GC5018 has four 16-bit inputs. Each DDC channel can be programmed to accept data from any one

(or two for complex input mode) of the four input ports.

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