MC9S12GRMV1 Datasheet, PDF (838/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

32 KByte Flash Module (S12FTMRG32K1V1)
25.3.2.5 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.
Offset Module Base + 0x0004
R
W
Reset
7
CCIE
0
6
5
4
3
2
0
0
0
0
IGNSF
0
0
0
0
0
= Unimplemented or Reserved
Figure 25-9. Flash Configuration Register (FCNFG)
1
FDFD
0
0
FSFD
0
CCIE, IGNSF, FDFD, and FSFD bits are readable and writable while remaining bits read 0 and are not
writable.
Table 25-13. FCNFG Field Descriptions
Field
7
CCIE
4
IGNSF
1
FDFD
0
FSFD
Description
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 Section 25.3.2.7)
Ignore Single Bit Fault — The IGNSF controls single bit fault reporting in the FERSTAT register (see
Section 25.3.2.8).
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
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.
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
Section 25.3.2.7) and an interrupt will be generated as long as the DFDIE interrupt enable in the FERCNFG
register is set (see Section 25.3.2.6)
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.
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 Section 25.3.2.7)
and an interrupt will be generated as long as the SFDIE interrupt enable in the FERCNFG register is set (see
Section 25.3.2.6)
25.3.2.6 Flash Error Configuration Register (FERCNFG)
The FERCNFG register enables the Flash error interrupts for the FERSTAT flags.
MC9S12G Family Reference Manual, Rev.1.23
840
Freescale Semiconductor