PXD20RM Datasheet, PDF (842/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

The nonvolatile system censoring information 0 register stores the 32 LSB of the Censorship Control Word
of the device.
The NVSCC0 is a nonvolatile register located in the Shadow sector: it is read during the reset phase of the
flash memory module and the protection mechanisms are activated consequently.
The parts are delivered uncensored to the user.
Table 25. NVSCC0 field descriptions
Field
Description
SC[15:0]
Serial Censorship control word 15-0 (Read/Write)
These bits represent the 16 LSB of the Serial Censorship Control Word (SCCW).
If SC15-0 = 0x55AA and NVSCC1 = NVSCC0 the Public Access is disabled.
If SC15-0  0x55AA or NVSCC1  NVSCC0 the Public Access is enabled.
CW[15:0]
Censorship control Word 15-0 (Read/Write)
These bits represent the 16 LSB of the Censorship Control Word (CCW).
If CW15-0 = 0x55AA and NVSCC1 = NVSCC0 the Censored Mode is disabled.
If CW15-0  0x55AA or NVSCC1  NVSCC0 the Censored Mode is enabled.
21.3.2.19 Nonvolatile System Censoring Information 1 register (NVSCC1)
Offset: 0x03DE4¹
Access: Read / Write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
W
Reset² X X X X X X X X X X X X X X X X
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
W
Reset X X X X X X X X X X X X X X X X
Figure 4. Nonvolatile System Censoring Information 1 register (NVSCC1)
1 _{See device memory map table for base address information of shadow flash.}
2 _{Reset values labeled “X” are loaded from the NVLML value which is preprogrammed at the factory. The default}
value from the factory for this register is 0x55AA_55AA. The default value can be reprogrammed by the user.
The nonvolatile System Censoring Information 1 register stores the 32 MSB of the Censorship Control
Word of the device.
The NVSCC1 is a nonvolatile register located in the Shadow sector: it is read during the reset phase of the
flash memory module and the protection mechanisms are activated consequently.
The parts are delivered uncensored to the user.
21-30
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor