Functional Description - STMicroelectronics SPC572L series Reference Manual

Error Injection Module (EIM)
Table 337. Error Injection Channel n Descriptor, Word1 (EICHDn.Word1) field description
Name
31-0
UDATA_MASK
33.2.2.3.3 Error Injection Channel n Descriptor, Word2 (EICHDn.Word2)
The third word of the Error Injection Channel n Descriptor defines a 32-bit mask
(LDATA_MASK). Each bit of LDATA_MASK specifies if the corresponding bit of the lower
word on the 64-bit read data bus from the target RAM should be inverted or left unmodified
on read accesses.The lower word corresponds to bits 31–0 of the 64-bit read data bus.
Successful writes to this word clear the corresponding error injection channel valid bit,
EICHEN[EICHnEN].
Offset 0x100 + (0x100*n) + 0x08
31 30 29
R
W
Reset 0 0
15 14 13
R
W
Reset 0 0
Figure 302. Error Injection Channel n Descriptor, Word2 (EICHDn.Word2)
Table 338. Error Injection Channel n Descriptor, Word2 (EICHDn.Word2) Field Description
Name
31-0
LDATA_MASK
33.3

Functional description

The EIM provides protection against accidental enable and reconfiguration of the error
injection function via a two-stage enable mechanism. To properly enable the error injection
mechanism for any given channel, the following two-stage enable scheme must be
executed:
•
EICHEN[EICHnEN] field is asserted, where n denotes the channel number
•
EIMCR[GEIEN] is asserted
690/2058
Upper Data Mask.
This field defines a bit-mapped mask that specifies if the corresponding bit of the upper
word on the read data bus from the target RAM should be inverted or left unmodified.
0 The corresponding bit of the upper word on the read data bus is left unmodified.
1 The corresponding bit of the upper word on the read data bus is inverted.
28 27 26
0 0 0 0
12 11 10
0 0 0 0
Lower Data Mask.
This field defines a bit-mapped mask that specifies if the corresponding bit of the lower
word on the read data bus from the target RAM should be inverted or left unmodified.
0 The corresponding bit of the lower word on the read data bus is left unmodified.
1 The corresponding bit of the lower word on the read data bus is inverted.
DocID027809 Rev 4
Description
25 24 23 22
LDATA_MASK
0 0 0 0
9 8 7 6
LDATA_MASK
0 0 0 0
Description
Access: Supervisor
21 20 19 18
0 0 0 0
5 4 3 2
0 0 0 0
RM0400
Read/Write
17 16
0 0
1 0
0 0