NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 265 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
EBI Control Register (EBI_CTL)
Register
Offset
R/W
Description
Reset Value
EBI_CTL
0x000
R/W
EBI Control Register
0x0001_0001
31
30
29
28
27
26
25
24
Reserved
EXBE4
EXBE3
EXBE2
EXBE1
EXBE0
23
22
21
20
19
18
17
16
M68E4
M68E3
M68E2
M68E1
M68E0
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
WAITVT
LITTLE
Bits
Description
[31:29]
Reserved
Reserved.
[28]
EXBE4
External Bus Bank 4 Byte Enable
This bit and M68E4 (EBI_CTL[23]) defines how the pins EBI_nBE1, EBI_nBE0 and
EBI_nWE are used when external bus bank 4 accessed.
Please refer to the table shown below for detail information.
EXBE4
M68E4
Description
0
0
80-type interface. Pin EBI_nBE1 and EBI_nBE0 used as
byte write strobe signal.
1
0
80-type interface. Pin EBI_nBE1 and EBI_nBE0 used as
byte enable signals while EBI_nWE used as write strobe
signal to external device.
0
1
68-type interface. EBI_nCS4 pin is the enable signal,
EBI_nWE used as read/write strobe signal
1
1
Reserved