MSC8113 Reference Manual, Rev. 0
12-108
Freescale Semiconductor
Memory Controller
Table 12-36. MxMR Bit Descriptions
Name
Reset
Description
Settings
BSEL
0
0
Bus Select
Assigns banks that select UPMx to the system
bus or local bus. UPMC is assigned to the local
bus and controls accesses to the internal
memories. UPMA and UPMB control external
devices residing on the system bus. If 60x bus
refresh is required, UPMA should be assigned
to system bus.
Note:
The boot sequence sets
MCMR[BSEL].
0
Banks that select UPMx are assigned to
the system bus.
1
Banks that select UPMx are assigned to
the local bus.
RFEN
1
0
Refresh Enable
Indicates that the UPM needs refresh services.
See the discussion of the system bus Assigned
UPM Refresh Timer (PURT) in Section 12.8.
0
Refresh services are not required.
1
Refresh services are required.
OP
2–3
00
Command Opcode
Determines the command executed by the
UPMx when a memory access hits a UPM
assigned bank.
For Write to array, on the next memory access
to a UPM assigned bank, write the contents of
the MDR into the RAM location pointed by
MAD. After the access, the MAD field is
automatically incremented.
For Read from array, on the next memory
access to a UPM assigned bank, read the
contents of the RAM location pointed by MAD
into the MDR. After the access, the MAD field is
automatically incremented.
For Run pattern, on the next memory access to
a UPM assigned bank, run the pattern written in
the RAM array. The pattern run starts at the
location pointed to by MAD and continues until
the LAST bit is set in the RAM.
Note:
RLF determines the number of times a
loop executes during a pattern run.
00 Normal
operation.
01
Write to array.
10 Read
from
array.
11 Run
pattern.
—
4
0
Reserved. Write to zero for future compatibility.
AMx
5–7
000
Address Multiplex Size
Determines how the address of the current
memory cycle can be output on the address
lines. The address output is controlled by the
contents of the UPMx RAM array. This field is
useful when the MSC8113 connects to DRAM
devices requiring row and column addresses
multiplexed on the same lines. See Section
12.4.4.3, Address Multiplexing, on page 12-59.
AMx
External
System Bus
Address Line
Signal Driven
on External
Line
000
A[16–31]
A[8–23]
001
A[16–31]
A[7–22]
010
A[16–31]
A[6–21]
011
A[16–31]
A[5–20]
100
A[17–31]
A[5–19]
101
A[18–31]
A[5–18]
Summary of Contents for MSC8113
Page 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Page 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Page 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Page 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Page 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Page 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...