MSC8113 Reference Manual, Rev. 0
12-106
Freescale Semiconductor
Memory Controller
SDRAM Device-Specific Parameters:
RFRC
14–16
000
Refresh Recovery
Defines the earliest timing for an
ACTIVATE
command after a
REFRESH
command. Sets the
refresh recovery interval in clock cycles.
000
Reserved
001
3 clocks
010
4 clocks
011
5 clocks
100
6 clocks
101
7 clocks
110
8 clocks
111
16 clocks
PRETOA
CT
17–19
000
Precharge to Activate Interval
Defines the earliest timing for an
ACTIVATE
or
REFRESH
command after a
PRECHARGE
command.
001
1 clock-cycle wait states.
010
2 clock-cycle wait states.
...
111
7 clock-cycle wait states.
000
8 clock-cycle wait states.
ACTTOR
W
20–22
000
Activate to Read/Write Interval
Defines the earliest timing for a
READ
/
WRITE
command after an
ACTIVATE
command.
001
1 clock cycle.
010
2 clock cycles.
...
111
7 clock cycles.
000
8 clock cycles.
BL
23
0
Burst Length
Defines the SDRAM burst length.
0
SDRAM burst length is 4. Use this value
if the device port size is 64 or 16.
1
SDRAM burst length is 8. Use this value
if the device port size is 32 or 8.
LDOTOP
RE
24–25
00
Last Data Out to Precharge
Defines the earliest timing for
PRECHARGE
command after the last data was read from the
SDRAM.
00
0 clock cycles.
01
–1 clock cycle.
10
–2 clock cycles.
11
Reserved.
WRC
26–27
00
Write Recovery Time
Defines the earliest timing for
PRECHARGE
command after the last data was written to the
SDRAM.
01
1 clock cycle.
10
2 clock cycles.
11
3 clock cycles.
00
4 clock cycles.
EAMUX
28
0
External Address Multiplexing
Enable/Disable
If this bit is set, PSDMR[ACTTORW] should be
a minimum of two clock cycles.
In 60x-compatible mode, external address
multiplexing is placed on the address lines. If
the additional delay of the multiplexing
endangers the device set-up time,
PSDMR[EAMUX] should be set. Setting this bit
causes the memory controller to add another
cycle for each address phase. Note that
PSDMR[EAMUX] can also be set in any case
of delays on the address lines, such as address
buffers.
0
No external address multiplexing. Fastest
timing.
1
The memory controller asserts
PSDAMUX for an extra cycle before
issuing an
ACTIVATE
command to the
SDRAM. This is useful when external
address multiplexing can cause a delay
on the address lines.
Table 12-35. PSDMR Bit Descriptions (Continued)
Name
Reset
Description
Settings
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 ...