mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 293

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

The DACRs should be programmed as shown in
This configuration results in a value of DACR0 = 0xFF88_0300, as described in
initialization is not needed because there is only one block. Subsequently, DACR1[RE,IMRS,IP] should
be cleared; everything else is a don’t care.
Freescale Semiconductor
1 Mbyte
Setting
Setting
(hex)
(hex)
Field
Field RE
31–18
17–16
13–12
10–8
31
15
Bits
5–4
15
14
11
7
6
512 Kbyte
512 Kbyte
Bank 0
—
14
Name
CASL
IMRS
CBM
F
BA
RE
PS
—
—
—
—
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
13
CASL
1 Mbyte
1111_1111_
12
1000_10
Figure 15-13. DACR Register Configuration
Setting
011
00
00
Table 15-28. DACR Initialization Values
0
0
Figure 15-12. SDRAM Configuration
—
11
Base address. So DACR0[31–16] = 0xFF88, placing the starting
address of the SDRAM accessible memory at 0xFF88_0000.
Reserved. Don’t care.
Keeps auto-refresh disabled because registers are being set up
at this time.
Reserved. Don’t care.
Indicates a delay of data 1 cycle after SCAS is asserted
Reserved. Don’t care.
Command bit is pin 20 and bank selects are 21 and up.
Reserved. Don’t care.
Indicates
32-bit port.
512 Kbyte
512 Kbyte
10
Bank 1
SDRAM Component
F
CBM
1111_1111_1000_10xx
0000_x011_x000_0000
MRS
Figure
BA
1 Mbyte
command has not been initiated.
8
0300
15-13.
—
7
Description
IMRS
6
512 Kbyte
512 Kbyte
Bank 2
8
5
PS
Synchronous DRAM Controller Module
4
1 Mbyte
Accessible
Memory
IP
3
Table
18
2
512 Kbyte
512 Kbyte
15-28. DACR1
8
Bank 3
—
17
1
—
16
0
15-21