Motorola MPC533 Reference Manual page 870

Programmer's Model
Bits Name
0 OVL Overlay enable — When set, the CALRAM overlay mode operation is enabled. In this mode
CALRAM allows eight programmable sections (four to 512 bytes) of the on-chip U-bus Flash
memory module to be overlaid by sections of the CALRAM.
0 CALRAM module overlay is disabled
1 CALRAM module overlay is enabled
1 DERR Data error
0 CALRAM module will not generate machine check exception due to normal L-bus array access
to the enabled portion overlay region even if overlay is enabled
1 CALRAM module will generate machine check exception due to normal L-bus array access to
the enabled portion of overlay region even if overlay is enabled
2 CLPS Collapse the total overlay region from 4 Kbytes to 32 bytes; that is, the size is forced to be four
bytes for each for the eight regions regardless of the values programmed in CRAM_RBAx[0:3];
these bits are also referred to as RGN_SIZE[0:3].
0 Overlay region of four Kbytes; region size as specified by CRAM_RBAx[0:3].
1 Overlay region of 32 bytes; each region size is four bytes long regardless of the values in
CRAM_RBAx[0:3].
3:31 — Reserved
20.5.4 CALRAM Ownership Trace Register (CRAM_OTR)
This register is provided to support a separate module called READI. Refer to Chapter 22,
"READI Module."
The reads from this register will return 0's.
CRAM_OTR is also defined as READI_OTR. See
Section 22.1.1.1, "User-Mapped Register (OTR)."
MSB 1
0
Field
SRESET
16 17 18
Field
SRESET
Addr
Figure 20-9. CALRAM Ownership Trace Register (CRAM_OTR)
20-14
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Table 20-5. CRAMOVLCR Bit Descriptions
2 3 4 5
Ownership Trace Register
19 20 21
Ownership Trace Register
MPC533 Reference Manual
Description
NOTE
6 7 8 9
0000_0000_0000_0000
22 23 24 25
0000_0000_0000_0000
0x38 002C
10 11 12 13
26 27 28 29
MOTOROLA
14 15
30 LSB
31