MSC8101PG Motorola / Freescale Semiconductor, MSC8101PG Datasheet - Page 91

• Manufacturer Part Number: MSC8101PG
• Description: MSC8101PG 16-Bit Digital Signal Processor Quick Reference
• Manufacturer: Motorola / Freescale Semiconductor

ORx
12–16 LSDAM
17–18 BPD
19–22 ROWST
23–25 NUMR
0–11 SDAM
Bits
Addr
26
Bit
Bit
PMSEL
LSDAM
16
0
(OR1) 0x1010C
Name
(OR0) 0x10104
Option Register—SDRAM Mode
17
1
BPD
SDRAM Address Mask
Lower SDRAM Address Mask
Internal Banks Per Device (128-MB devices, 10 =invalid) 00 = 2
Row Start Address Bit
Number of Row Address Lines
Page Mode Select
18
2
19
3
(OR3) 0x1011C
(OR2) 0x10114
Description
20
4
Table 6-12. Memory Controller Registers (Continued)
ROWST
21
5
ORx—SDRAM Mode Bit Descriptions
SDAM
SDRAM Page Information
22
6
(OR5) 0x1012C
(OR4) 0x10124
23
7
0000_0000_0000 = 4 GB
1000_0000_0000 = 2 GB
1100_0000_0000 = 1 GB
1110_0000_0000 = 512 MB
1111_0000_0000 = 256 MB
1111_1000_0000 = 128 MB
1111_1100_0000 = 64 MB
Note: Reset to 0x0 to implement a 1 MB minimum when using SDRAM.
For PSDMR[PBI] = 0:
0010 = A7
0100 = A8
0110 = A9
1000 = A10
1010 = A11
1100 = A12
1110 = A13
Other values reserved
000 = 9
001 = 10
0 = Back-to-back page mode (normal operation)
1 = Page kept open until a page miss or refresh occurs
NUMR
24
8
Reset: 0
25
9
(OR7) 0x1013C
(OR6) 0x10134
01 = 4
010 = 11
011 = 12
PMSEL
10
26
IBID
11
27
Settings
1111_1110_0000 = 32 MB
1111_1111_0000 = 16 MB
1111_1111_1000 = 8 MB
1111_1111_1100 = 4 MB
1111_1111_1110 = 2 MB
1111_1111_1111 = 1 MB
10 = 8
For PSDMR[PBI] = 1:
0000 = A0
0001 = A1
...
1100 = A12
1101–1111 Reserved
100 = 13
101 = 14
12
28
Type: R/W
(OR11) 0x1015C
(OR10) 0x10154
13
29
LSDAM
—
11 = Reserved
110 = 15
111 = 16
14
30
15
31