Register bit assignment – Digi NS9750 User Manual
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S y s t e m c o n f i g u r a t i o n r e g i s t e r s
3 0 6
N S 9 7 5 0 H a r d w a r e R e f e r e n c e
Register bit assignment
System Memory Chip Select 3 Dynamic Memory Base and Mask registers
Address: A090 01E8 / 01EC
These control registers set the base and mask for system memory chip select 7, with
a minimum size of 4K. The powerup default settings produce a memory range of
0x3000 0000 — 0x3FFF FFFF
.
Bits
Access
Mnemonic
Reset
Description
D31:12
R/W
CS2B
0x20000
Chip select 2 base
Base address for chip select 2 (dynamic).
D11:00
N/A
Reserved
N/A
N/A
D31:12
R/W
CS2M
0xF0000
Chip select 2 mask
Mask or size for chip select 2 (dynamic).
D11:00
N/A
Reserved
N/A
N/A
Table 193: System Memory Chip Select 2 Dynamic Memory Base & Mask registers
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Chip select 2 base (CS2B)
Reserved
Chip select 2 base (CS2B)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Chip select 2 mask (CS2M)
Reserved
Chip select 2 mask (CS2M)