MSC8113 Reference Manual, Rev. 0
12-104
Freescale Semiconductor
Memory Controller
PSDMR configures operations pertaining to SDRAM machine on the system bus.
EHTR
29–30
—
Extended Hold Time on Read Accesses
Indicates the number of cycles inserted
between the current bank read access and the
next access.
Note:
The boot sequence writes 00 to
OR11[EHTR].
00
Normal timing is generated by the
memory controller. No additional cycles
are inserted.
01
One idle clock cycle is inserted.
10
Four idle clock cycles are inserted.
11
Eight idle clock cycles are inserted.
—
31
—
Reserved. Write to zero for future compatibility.
PSDMR
System Bus SDRAM Mode Register
Bit 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PBI
RFEN
OP
SDAM
BSMA
SDA10
RFRC
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
RFRC
PRETOACT
ACTTORW
BL
LDOTOPRE
WRC
EAMUX BUFCMD
CL
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 12-35. PSDMR Bit Descriptions
Name
Reset
Description
Settings
PBI
0
0
Page-Based Interleaving
Selects the address multiplexing method.
PSDMR[PBI] works in conjunction with
PSDMR[SDA10].
Note:
See Section 12.2.5, Bank
Interleaving, on page 12-17.
0
Bank-based interleaving.
1
Page-based interleaving (normal
operation).
RFEN
1
0
Refresh Enable
Indicates that the SDRAM needs refresh
services.
Note:
See the discussion of PSRT on
page 12-111.
0
Refresh services are not required.
1
Refresh services are required.
OP
2–4
000
SDRAM Operation
Determines which operation occurs when the
SDRAM device is accessed.
Note:
If 60x-compatible mode is in effect on
the system bus or the SDRAM port
size is 8/16 or the SDRAM is
connected to the BADDR lines (not
needed for 64/32 port size), the bus
master must supply the mode register
data on the low bits of the address
during the access.
000
Normal operation.
001
CBR refresh, used in SDRAM
initialization.
010
Self refresh (for debug purpose).
011
Mode Register write, used in SDRAM
initialization.
100
Precharge bank (for debug purpose).
101
Precharge all banks, used in SDRAM
initialization.
110
Activate bank (for debug purpose).
111
Read/write (for debug purpose).
Table 12-34. ORx—UPM Mode 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 ...