PXS20RM Datasheet, PDF (1267/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Self-Test Control Unit (STCU)
Address: Base + 0x0008 (cut2/3 only)
Access: User write-only
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
R
W
SKC[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
SKC[15:0]
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 42-5. STCU SK Code Register (STCU_SKC) [cut2/3 only]
Table 42-3. STCU_SKC field descriptions
Field
SKC
Description
SKC: STCU security key code
= 0xABFC1893: Key1 to unlock the write access the STCU (when not protected)
= 0x319A6C2F: Key2 to unlock the write access the STCU (when not protected)
42.4.3.2 STCU Configuration Register (STCU_CFG) [cut1 only]
The STCU_CFG register includes the global configuration of the STCU.
Address: Base + 0x000C [cut1 only]
Access: User read-only
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
R0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
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 0 0 0 0 0 0 0 BYP 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 42-6. STCU Configuration Register (STCU_CFG) [cut1 only]
Table 42-4. STCU_CFG field descriptions
Field
BYP
Description
Bypass mode
0: STCU is active.
1: STCU is in bypass mode. The self test is bypassed.
42.4.3.3 STCU Error Register (STCU_ERR)
The STCU_ERR register includes the status flags for the STCU internal error conditions that occurred
during the configuration or the self test.
The STCU_ERR fields can be cleared by software depending on the applied unlocked sequence:
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
42-9