Chapter 29 1024 KByte Flash Module (S12XFTM1024K5V2)
MC9S12XE-Family Reference Manual , Rev. 1.19
1156
Freescale Semiconductor
29.3.2.5
Flash Configuration Register (FCNFG)
The FCNFG register enables the Flash command complete interrupt and forces ECC faults on Flash array
read access from the CPU or XGATE.
CCIE, IGNSF, FDFD, and FSFD bits are readable and writable while remaining bits read 0 and are not
writable.
29.3.2.6
Flash Error Configuration Register (FERCNFG)
The FERCNFG register enables the Flash error interrupts for the FERSTAT flags.
Offset Module Base + 0x0004
7
6
5
4
3
2
1
0
R
CCIE
0
0
IGNSF
0
0
FDFD
FSFD
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 29-9. Flash Configuration Register (FCNFG)
Table 29-15. FCNFG Field Descriptions
Field
Description
7
CCIE
Command Complete Interrupt Enable
— The CCIE bit controls interrupt generation when a Flash command
has completed.
0 Command complete interrupt disabled
1 An interrupt will be requested whenever the CCIF flag in the FSTAT register is set (see
4
IGNSF
Ignore Single Bit Fault
— The IGNSF controls single bit fault reporting in the FERSTAT register (see
0 All single bit faults detected during array reads are reported
1 Single bit faults detected during array reads are not reported and the single bit fault interrupt will not be
generated
1
FDFD
Force Double Bit Fault Detect
— The FDFD bit allows the user to simulate a double bit fault during Flash array
read operations and check the associated interrupt routine. The FDFD bit is cleared by writing a 0 to FDFD. The
FECCR registers will not be updated during the Flash array read operation with FDFD set unless an actual
double bit fault is detected.
0 Flash array read operations will set the DFDIF flag in the FERSTAT register only if a double bit fault is detected
1 Any Flash array read operation will force the DFDIF flag in the FERSTAT register to be set (see
) and an interrupt will be generated as long as the DFDIE interrupt enable in the FERCNFG
register is set (see
)
0
FSFD
Force Single Bit Fault Detect
—
The FSFD bit allows the user to simulate a single bit fault during Flash array
read operations and check the associated interrupt routine. The FSFD bit is cleared by writing a 0 to FSFD. The
FECCR registers will not be updated during the Flash array read operation with FSFD set unless an actual single
bit fault is detected.
0 Flash array read operations will set the SFDIF flag in the FERSTAT register only if a single bit fault is detected
1 Flash array read operation will force the SFDIF flag in the FERSTAT register to be set (see
and an interrupt will be generated as long as the SFDIE interrupt enable in the FERCNFG register is set (see
)
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages
