Cirrus Logic EP93 Series User Manual page 160

System Controller
EP93xx User's Guide
SysCfg
5
31 30
REV
15 14
Address:
Default:
Definition:
Bit Descriptions:
5-34
29 28 27 26
13 12 11 10
RSVD
0x8093_009C - Read/Write, Software locked
0x0000_0000
System Configuration Register. Provides various system configuration
options.
RSVD:
REV:
SBOOT:
LCSn7, LCSn6:
LASDO:
LEEDA:
LEECLK:
Copyright 2007 Cirrus Logic
25 24 23 22
RSVD
9 8 7 6
SBOOT LCSn7 LCSn6
Reserved. Unknown During Read.
Revision: Reads chip Version number:
0000 - Rev A
0001 - Rev B
0010 - Rev C
0011 - Rev D0
0100 - Rev D1
0101 - Rev E0
Serial Boot Flag.
1 - hardware detected Serial Boot selection,
0 - hardware detected Normal Boot. This bit is read-only.
Latched version of CSn7 and CSn6 respectively. These
are used to define the external bus width for the boot
code.
Latched version of ASDO pin. Used to select synchronous
versus asynchronous boot device.
Latched version of EEDAT pin.
Define Internal or external boot:
1 - Internal
0 - External
21 20 19 18
5 4 3 2
LASDO LEEDA LEECLK RSVD
17 16
1 0
LCSn2 LCSn1
DS785UM1