PXS20RM Datasheet, PDF (509/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Fault Collection and Control Unit (FCCU)
2. Write the FCCU_CTRL register (operations OP1, OP2, OP16, or OP31).
The FCCU_CTRLK register is not readable. A read operation always returns 0x0000_0000. The key must
be written by a word (32-bit) data write operation.
Offset: 0x04
Access: User write-only
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
W
CTRLK[31:16]
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
W
CTRLK[15:0]
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 22-3. FCCU CTRL Key Register (FCCU_CTRLK)
Table 22-4. FCCU_CTRLK field descriptions
Field
CTRLK
Control register key:
Description
CTRLK value
0x9137_56AF
0x825A_132B
0x7ACB_32F0
0x29AF_8752
Function
Key for operation OP1
Key for operation OP2
Key for operation OP16
Key for operation OP31
22.6.3 FCCU Configuration Register (FCCU_CFG)
The FCCU_CFG register is accessible in write mode only in the CONFIG state. It defines the global
configuration for the FCCU.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
22-9