Secure ROM
128KB
Public ROM
48KB
0x00000
0x20000
0x2BFFF
ROM Exc. Vectors
Dead loops
Public ROM CRC
0x20080
0x20020
Code
0x20100
ROM Version
0x2BFFC
Preliminary
Memory Map
www.ti.com
21.3 Memory Map
21.3.1 Public ROM Memory Map
The on-chip ROM memory map is shown in
. The bottom part of the physical ROM contains
the Secure ROM Code. The upper part holds the Public ROM Code. The Public ROM Code mapping
consists in the following:
•
Exception vectors
•
CRC
•
Dead loops collection
•
Code and const data sections
•
API Table
•
ROM Version
Figure 21-3. ROM Memory Map
21.3.1.1 Public ROM Exception Vectors
lists the Public ROM exception vectors. The reset exception is redirected to the Public ROM
Code startup. Other exceptions are redirected to their RAM handlers by loading appropriate addresses
into the PC register.
Table 21-3. ROM Exception Vectors
Address
Exception
Content
20000h
Reset
Branch to the Public ROM Code startup
20004h
Undefined
PC = 4030 D004h
20008h
SWI
PC = 4030 D008h
2000Ch
Pre-fetch abort
PC = 4030 D00Ch
20010h
Data abort
PC = 4030 D010h
20014h
Unused
PC = 4030 D014h
20018h
IRQ
PC = 4030 D018h
2001Ch
FIQ
PC = 4030 D01Ch
1990
ROM Code Memory and Peripheral Booting
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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