Cirrus Logic EP93xx User Manual

Page 27

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DS785UM1

P-5

Preface

EP93xx User’s Guide

REV:

Revision, reads chip Version number: 0 - Rev A, 1 - Rev B,
2 - Rev C, 3 - Rev D.

SBOOT:

Serial Boot Flag. This bit is read-only.
1 hardware detected Serial Boot selection
0 hardware detected Normal Boot

LCSn7, LCSn6:

Latched version of CSn7 and CSn6 respectively. These
are used to define the external bus width for the boot code
boot.

LASDO:

Latched version of ASDO pin. Used to select synchronous
versus asynchronous boot device.

LEEDA:

Latched version of EEDAT pin.

LEECLK:

Define Internal or external boot:
1 Internal
0 External

LCSn1, LCSn2:

Define Watchdog startup action:
0 0 Watchdog disabled, Reset duration disabled
0 1 Watchdog disabled, Reset duration active
1 0 Watchdog active, Reset duration disabled
1 1 Watchdog active, Reset duration active