Boot_def bitmap -73, Table 6-37 – Intel PXA255 User Manual

Page 255

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Intel® PXA255 Processor Developer’s Manual

6-73

Memory Controller

Table 6-37. BOOT_DEF Bitmap

0x4800_0044

BOOT_DEF

Memory Controller

Bit

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

reserved

PK

G

_

TY

PE

B

OOT

_

S

E

L

Reset

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*

*

*

*

Bits

Name

Description

31:4

reserved

3

PKG_TYPE

PROCESSOR TYPE (read only):

0 – Reserved
1 – PXA255 processor

2:0

BOOT_SEL

BOOT SELECT (read only):

Contains the three inputs pins BOOT_SEL[2:0] for the processor. See

Table 6-36

.

See

Table 6-38

for valid boot configurations. See

Section 6.10.2.2

for descriptions of Boot

Time Configurations.

Table 6-38. Valid Boot Configurations Based on Processor Type

Processor Type

Boot_Sel Signals

Valid Booting Configurations

(PXA255 processor)

000

001

100

101

110

111

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