ColdFire Core

Information loaded into D1 defines the local memory hardware configuration as shown in the figure below.

BDM: Load: 0x61 (D1)

Store: 0x41 (D1)

31 30 29 28

27 26 25 24

23 22 21 20

Access: User read-only BDM read-only

19 18 17 16

R

W

0

0

0

1

0

0

0

0

FLASHSZ

0

0

0

0

Reset

R

W

0

0

0

1

0

0

0

0

 

1

0

0

1

 

0

0

0

0

15

14

13

12

 

10

9

8

 

7

6

5

4

 

3

2

1

0

 

 

 

11

 

 

0

0

0

0

0

0

0

0

 

 

SRAMSZ

 

 

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset 0 0 0 0

0 0 0 0

0 1 0 1

0 0 0 0

 

 

Figure 7-13. D1 Hardware Configuration Info

 

 

Table 7-12. D1 Hardware Configuration Information Field Description

 

 

 

Field

 

Description

 

 

31–24

Reserved.

 

 

23–20

Flash bank size.

FLASHSZ

0000-0111 No flash

 

1000

64-Kbyte flash

 

1001

128-Kbyte flash

 

1010

256-Kbyte flash

 

1011

512-Kbyte flash

 

Else

Reserved for future use.

 

 

19–16

Reserved

 

 

15–8

Reserved

 

 

7–4

SRAM bank size.

SRAMSZ

0000

No SRAM

 

0001

512 bytes

 

0010

1 Kbytes

 

0011

2 Kbytes

 

0100

4 Kbytes

 

0101

8 Kbytes (This is the value used for this device)

 

0110

16 Kbytes

 

0111

32 Kbytes

 

1000

64 Kbytes

 

1001

128 Kbytes

 

Else

Reserved for future use

 

 

3-0

Reserved.

 

 

 

MCF51QE128 MCU Series Reference Manual, Rev. 3

166

Freescale Semiconductor

Page 166
Image 166
Freescale Semiconductor MCF51QE128RM manual 12. D1 Hardware Configuration Information Field Description, Flashsz, Sramsz