PXD20RM Datasheet, PDF (1500/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Table 44-8. DEBUGPORT Field Descriptions
Field
Description
13-15 Debug Status Port Mode. This field selects the alternate debug functionality for the Debug Status Port
DEBUG 000 No alternate functionality selected
_MODE 001 Mode 1 Selected
[0:2] 010 Mode 2 Selected
011 Mode 3 Selected
100 Mode 4 Selected
101 Mode 5 Selected
110 Mode 6 Selected
111 Mode 7 Selected
Table 44-9 describes the functionality of the Debug Status Port in each mode.
Table 44-9. Debug Status Port Modes
Pin¹ Mode 1 Mode 2
Mode 3
Mode 4
Mode 5
0
STATUS[0]
STATUS[8]
MEMCONFIG[0]
MEMCONFIG[8]
1
STATUS[1]
STATUS[9]
MEMCONFIG[1]
MEMCONFIG[9]
2
STATUS[2]
STATUS[10]
MEMCONFIG[2]
MEMCONFIG[10]
3
STATUS[3]
STATUS[11]
MEMCONFIG[3]
MEMCONFIG[11]
4
STATUS[4]
STATUS[12]
MEMCONFIG[4]
MEMCONFIG[12]
5
STATUS[5]
STATUS[13]
MEMCONFIG[5]
MEMCONFIG[13]
6
STATUS[6]
STATUS[14]
MEMCONFIG[6]
MEMCONFIG[14]
7
STATUS[7]
STATUS[15]
MEMCONFIG[7]
MEMCONFIG[15]
1 _{All signals are active high, unless otherwise noted}
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Mode 6
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Mode 7
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Table 44-10. DEBUGPORT Allowed Register Accesses
8-bit
16-bit
32-bit¹
READ
Allowed
Allowed
Not Allowed
WRITE
Allowed
Allowed
1 _{All 32-bit accesses must be aligned to 32-bit addresses (i.e. 0x0, 0x4, 0x8 or 0xC).}
Not Allowed
44.2.2.5 Password Comparison Registers
These registers allow to unsecure the device, if the correct password is known.
44-6
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor