MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 641
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MPC8544COMEDEV
Manufacturer Part Number
MPC8544COMEDEV
Description
KIT DEV EXPRESS MPC8544COM
Manufacturer
Freescale Semiconductor
Type
MPUr
Datasheets
1.MPC8544VTALF.pdf
(117 pages)
2.MPC8544VTALF.pdf
(2 pages)
3.MPC8544VTALF.pdf
(1340 pages)
Specifications of MPC8544COMEDEV
Contents
Board
For Use With/related Products
MPC8544
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.3.1.7
The local bus SDRAM mode register (LSDMR), shown in
pertaining to SDRAM.
Table 14-12
Freescale Semiconductor
11–13
Offset 0x094
Reset
8–10
Bits
2–4
5–7
0
1
W
R
— RFEN
0
BSMA
Name
RFEN
1
OP
—
—
—
describes LSDMR fields.
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
SDRAM Machine Mode Register (LSDMR)
2
OP
Reserved
Refresh enable. Indicates that the SDRAM requires refresh services.
0 Refresh services are not required.
1 Refresh services are required.
SDRAM operation. Selects the operation that occurs when the SDRAM device is accessed.
Reserved
Bank select multiplexed address line. Selects which address signals serve as the 2-bit bank-select
address for SDRAM. Note that only 4-bank SDRAMs are supported.
000 LA12:LA13
001 LA13:LA14
010 LA14:LA15
011 LA15:LA16
Reserved
4 5
—
Figure 14-10. SDRAM Machine Mode Register (LSDMR)
7
Value
8
000
001
010
011
100
101
110
111
BSMA
Table 14-13. LSDMR Field Descriptions
10 11
Normal operation
Auto refresh
Self refresh
Mode Register write
Precharge bank
Precharge all banks
Activate bank
Read/write without valid data transfer
—
13 14
RFCR
100 LA16:LA17
101 LA17:LA18
110 LA18:LA19
111 LA19:LA20
Meaning
16 17
All zeros
PRETOACT ACTTORW BL
Description
Figure
19
20
14-10, is used to configure operations
Normal operation
Initialization
Power-down mode or debug
Initialization
Debug
Initialization
Debug
Debug
22
23 24 25 26 27 28
—
Use
WRC — BUFCMD
Access: Read/Write
Local Bus Controller
29
30 31
14-21
CL
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