Memory Controller

Table 6-40. 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

reserved

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

3 2 1 0

PKG TYPE

BOOT SEL

 

 

* * * *

Bits

Name

 

Description

 

 

 

31:4

reserved

 

 

 

 

 

PROCESSOR TYPE (read only):

3

PKG_TYPE

0 –

Reserved

 

 

1 –

PXA255 processor

 

 

 

 

 

BOOT SELECT (read only):

2:0

BOOT_SEL

Contains the three inputs pins BOOT_SEL[2:0] for the processor. See Table 6-39.

 

 

See Table 6-41for valid boot configurations. See Section 6.10.2.2 for descriptions of Boot

 

 

Time Configurations.

 

 

 

 

Table 6-41. Valid Boot Configurations Based on Processor Type

Processor Type

Boot_Sel Signals

Valid Booting Configurations

 

 

 

 

 

 

 

000

 

 

 

 

 

001

 

 

 

(PXA255 processor)

 

100

 

 

 

101

 

 

 

 

 

 

 

110

 

 

 

 

 

111

 

 

 

Intel® PXA255 Processor Developer’s Manual

6-75

Page 257
Image 257
Intel PXA255 manual Bootdef Bitmap, Valid Boot Configurations Based on Processor Type, PKG Type Boot SEL