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MC145474

ISDN S/T Interface Transceiver

Motorola => Freescale 

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TABLE OF CONTENTS

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SECTION 9

D CHANNEL OPERATION

9.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 GAINING ACCESS TO THE D CHANNEL IN THE TE MODE . . . . . . . . . . . . . . . 9-1

9.3 SETTING THE CLASS FOR TE MODE OF OPERATION . . . . . . . . . . . . . . . . . . . 9-2

9.4 GENERATION OF AN INTERRUPT IN THE TE MODE . . . . . . . . . . . . . . . . . . . . . 9-3

9.5 GAINING ACCESS TO THE D CHANNEL IN THE NT MODE . . . . . . . . . . . . . . . 9-3

SECTION 10

MULTIFRAMING

10.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.2 ACTIVATION/DETECTION OF MULTIFRAMING IN THE MC145474/75 . . . . . . 10-1

10.3 WRITING S CHANNEL DATA TO AN NT CONFIGURED MC145474/75 . . . . . . 10-1

10.4 MULTIFRAME INTERRUPTS IN AN NT CONFIGURED MC145474/75 . . . . . . . 10-1

10.5 READING Q CHANNEL DATA FROM AN NT CONFIGURED MC145474/75 . . 10-2

10.6 WRITING Q CHANNEL DATA TO A TE CONFIGURED MC145474/75 . . . . . . . 10-3

10.7 MULTIFRAME INTERRUPTS IN A TE CONFIGURED MC145474/75 . . . . . . . . 10-3

10.8 READING S SUBCHANNEL DATA FROM A TE CONFIGURED MC145474/75 10-3

10.9 FAR END CODE VIOLATION (FECV) DETECTION . . . . . . . . . . . . . . . . . . . . . . . . 10-3

SECTION 11

NT1 STAR MODE OPERATION

SECTION 12

IDL FIFOS

12.1

12.2

12.3

12.3.1

12.3.2

12.3.3

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

TRANSMIT FIFOs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

RECEIVE FIFOs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2

Generation and Clearing of IRQ #4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

Generation and Clearing of IRQ #5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

Flow Control of IDL Receive FIFOs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

SECTION 13

INTERRUPTS

13.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.2 IRQ #1 NR3(1) — TE: D CHANNEL COLLISION

NT: NOT APPLICABLE

NR4(1) — ENABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.3 IRQ #2 NR3(2) — MULTIFRAME RECEPTION

NR4(2) — ENABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

MC145474 • MC145475

MOTOROLA

ix

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