ST18-AU1 datasheet(2/87 Pages) STMICROELECTRONICS

2 / 87 page

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Table of Contents

INTRODUCTION . . . . . . ... . . .. ... .. ... . . .. ... .. ..... .. ... . . .. ... .. ..... 5

PIN DESCRIPTIONS .. .. ... .. ... . . .. ... .. ..... .. ... .. .... . . . ..... .. ... . 7

FUNCTIONAL OVERVIEW . ... .. ... . . .. ... .. ..... .. ... .. .. .... . . .. ... . . 12

HOST INTERFACE .. ... .. ... . . .. ... .. ..... .. ... .. ..... . . ..... .. ... .. . 16

4.1

HOST INTERFACE REGISTERS . . . . . . ... ..... . . .. ... .. .. ... ..... . . 16

4.2

LIST OF HOST COMMANDS . . ... . . .. ... .. ..... .. ... . . . ..... .. .. .. 19

INPUT SERIAL INTERFACE .. ... . . .. ... .. ..... .. ... .. ..... ... .. ... . . .. . 25

5.1

INPUT SERIAL INTERFACE REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2

INPUT FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... .. ... . . .. ... .. .... 27

5.2.1

Input FIFO registers . . . . . . . . . . . . . . . . . . . ..... .. . . . ... .... ... . 27

INPUT AND OUTPUTBUFFERS . ..... . . .. ... ..... . . .. ... . . . . . ... .. ..... 29

6.1

INPUT BUFFER . ..... .. ... .. ..... . . .. ... ..... . . .. .. .... .. ... .. .. 29

6.2

OUTPUT BUFFER . . ..... . . .. ... . . .. ... .. ... . . .. ... . . . ..... . . .. .. 29

6.2.1

Input and output buffer registers . . . . ..... .. ... .. .. ... .. ..... .. 29

OUTPUT SERIAL INTERFACE - PCM OUTPUT .. ..... . . .. ... .. .. ... ..... . . 31

7.1

OUTPUT SERIAL INTERFACE REGISTERS ..... .. ... .. .. ... .. ..... .. 31

INTERRUPT CONTROLLER . . . . . . . . . . . . . . . . . . . ..... .. ... . . . .... ... .. .. 34

8.1

INTERRUPT CONTROLLER REGISTERS . . . . . . . . ..... .. ... . . .. ... .. . 35

DMA CONTROLLER . . . . .. ... ..... . . .. ... . . .. ... .. ... . . .. ... . . .. ... .. . 40

9.1

DMAOPERATION .... .. ... .. ..... . . .. ... ..... . . .. .. .... .. ... .. .. 40

9.2

DMAREGISTERS ... .. ... . . .. ... .. ... . . .. ... .. ..... . . . . . ... . . .. . 41

9.2.1

Address registers . . . . . . . . . . . . . . . . . . ..... .. ... . . . .... ... .. .. 41

9.2.2

Counting registers . . ..... . . .. ... .... ... .. ... . . . . . ... .. ..... 41

9.2.3

Control registers . ..... .. ... .. ..... .. ... .. ..... ... .. ... . . .. . 42

10 IEC-958 TRANSMITTER . . . . . . . . ..... . . .. ... ..... . . .. ... . . . . . ... .. ..... 44

10.1

IEC-958 TRANSMITTER REGISTERS . . . . . . . . . . . . . . . . . . . . . .... ... .. . 44

11 MEMORY . . .. ... . . . . . ... .. ..... .. .. ... ..... . . .. ... .... . . . ..... . . .. . 46

11.1

INTERNAL MEMORYRESOURCE . . ... ..... . . .. ... .... ... ..... . . .. . 46

11.2

I-MEMORY BUS EXTENSION - DIRECT AND THROUGH BSU . . . . . . . . . . . 47

11.3

X-MEMORY BUS EXTENSION - DIRECT AND THROUGH BSU ..... . . .. .. 47

11.4

Y-MEMORY BUS EXTENSION THROUGH BSU . . . . . . . . . . ..... . . .. ... . 47

12 BUS SWITCH UNIT . . .... . . .. ... ..... . . .. ... . . .. ... .. ... .. .. ... . . .. ... 48

12.1

BSU CONTROL REGISTERS . . . . . . ... .. ... . . .. ... .. .. .... . . .. ... .. 48

13 CLOCKS AND TIMERS UNIT . . . . . . . . . . ..... . . .. ... ..... . . . . . ..... .. ... . 51

13.1

OPERATION .. .... . . .. ... ..... . . .. ... . . .. ... .. ... .. .. ... . . .. ... 51

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