Texas Instruments TMS320F2837 D Series Workshop Guide And Lab Manual

Dual Code Security Module (DCSM)
10 - 14 TMS320F2837xD Microcontroller Workshop - System Design
Zone Select Block - Linker Pointer
Zone Select Block
Addr. Offset 32-bit Content
0x0 Zx-EXEONLYRAM
0x2 Zx-EXEONLYSECT
0x4 Zx-GRABRAM
0x6 Zx-GRABSECT
0x8 Zx-CSMPSWD0
0xA Zx-CSMPSWD1
0xC Zx-CSMPSWD2
0xE Zx-CSMPSWD3
Zone 1 OTP FLASH
0x78000 Z1-LINKPOINTER1
0x78002 Reserved
0x78004 Z1-LINKPOINTER2
0x78006 Reserved
0x78008 Z1-LINKPOINTER3
0x7800A Reserved
0x78010 Z1-PSWDLOCK
0x78012 Reserved
0x78014 Z1-CRCLOCK
0x78016 Reserved
0x78018 Reserved
0x7801A Reserved
0x7801E Z1-BOOTCTRL
0x78020 ZoneSelectBlock1
(16 x 16-bits)
0x78030 ZoneSelectBlock2
(16 x 16-bits)
●
●
●
●
0x781F0 ZoneSelectBlockn
(16 x 16-bits)
Zone 2 OTP FLASH
0x78200 Z2-LINKPOINTER1
0x78202 Reserved
0x78204 Z2-LINKPOINTER2
0x78206 Reserved
0x78208 Z2-LINKPOINTER3
0x7820A Reserved
0x78210 Z2-PSWDLOCK
0x78212 Reserved
0x78214 Z2-CRCLOCK
0x78216 Reserved
0x78218 Reserved
0x7821A Reserved
0x7821E Z2-BOOTCTRL
0x78220 ZoneSelectBlock1
(16 x 16-bits)
0x78230 ZoneSelectBlock2
(16 x 16-bits)
●
●
●
●
0x783F0 ZoneSelectBlockn
(16 x 16-bits)
Three link pointers
need to be
programmed with
the same value
(not ECC
protected)
Secure and Unsecure the CSM
 The CSM is always secured after reset
 To unsecure the CSM:
 Perform a dummy read of each CSMPSWD(0,1,2,3)
register (passwords in the OTP)
 Write the correct password to each
CSMKEY(0,1,2,3) register
 Passwords are all 0xFFFF on new devices
 When passwords are all 0xFFFF, only a read of
each password location (PWL) is required to
unsecure the device
 The bootloader does these dummy reads and
hence unsecures devices that do not have
passwords programmed

Texas Instruments TMS320F2837 D Series Specifications

General

Brand	Texas Instruments
Model	TMS320F2837 D Series
Category	Microcontrollers
Language	English