MPC5200B Users Guide, Rev. 1
9-18 Freescale Semiconductor
Programmer’s Model
9.7.1.4 Chip Select Status Register—MBAR + 0x031C
9.7.1.5 Chip Select Burst Control Register—MBAR + 0x0328
Bits Name Description
0:6 — Reserved
7 ME Master Enable bit—a global module enable bit. If this bit is low, register access can still occur,
but no external transactions are accepted. However, ME does not affect boot ROM operation
on CS[0 ]. If software wishes to disable CS[0 ], it must write 0 to the Chip Select Boot ROM
Configuration Register enable bit (CE).
8:31 — Reserved

Table 9-10. Chip Select Status Register

msb 012345678 9 101112131415
RReserved
WOerr
ROerr
Rsvd CSxerr Reserved
W
RESET:000000000 0 0 000 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 lsb
RReserved
W
RESET:000000000 0 0 000 0 0
Bits Name Description
0:1 — Reserved
2 WOerr Write Only error—If 1, it indicates a Read access was attempted on a peripheral mar ked as
write-only.
This is a sticky bit and must be written with 1 to be cleared. This status bit is always active
regardless of bus error enable bit. The CS number that relates to the error is reflected in the
CSxerr field.
3 ROerr Read Only error—If 1, it indicates a Write access was attempted on a per ipheral marked as
read-only.
This is a sticky bit and must be written with 1 to be cleared. This status bit is always active
regardless of bus error enable bit. The CS number that relates to the error is reflected in the
CSxerr field.
4—Reserved
5:7 CSxerr Chip Select error—Indicates CS number associated with WOerr or ROerr.
8:31 — Reserved

Table9-11. Chip Select Burst Control Register

msb 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R CW7 SLB7 Rsvd
BRE7
CW6 SLB6 Rsvd
BRE6
CW5 SLB5 Rsvd
BRE5
CW4 SLB4 Rsvd
BRE4
W
RESET:0000000000000000