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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 266 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
[27]
EXBE3
External Bus Bank 3 Byte Enable
This bit and M68E3(EBI_CTL[22]) defines how the pins EBI_nBE1, EBI_nBE0 and EBI_nWE
are used when external bus bank 3 accessed.
Please refer to the table shown below for detail information.
EXBE3
M68E3
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_nCS3 pin is the enable signal,
EBI_nWE used as read/write strobe signal
1
1
Reserved
[26]
EXBE2
External Bus Bank 2 Byte Enable
This bit and M68E2(EBI_CTL[21]) defines how the pins EBI_nBE1, EBI_nBE0 and EBI_nWE
are used when external bus bank 2 accessed.
Please refer to the table shown below for detail information.
EXBE2
M68E2
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_nCS2 pin is the enable signal,
EBI_nWE used as read/write strobe signal
1
1
Reserved
[25]
EXBE1
External Bus Bank 1 Byte Enable
This bit and M68E1(EBI_CTL[20]) defines how the pins EBI_nBE1, EBI_nBE0 and EBI_nWE
are used when external bus bank 1 accessed.
Please refer to the table shown below for detail information.
EXBE1
M68E1
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_nCS1 pin is the enable signal,
EBI_nWE used as read/write strobe signal
1
1
Reserved