8-15
Register: 0xFF19
Multipurpose I/O Bank 2 Enable (MPE2)
Read/Write
MPE2_[7:0]
Multipurpose I/O Bank 2 Enable
[7:0]
These bits control the output enables on the I/O pins
MPIO2_0, MPIO2_1, MPIO2_2, MPIO2_3, MPIO2_4,
MPIO2_5, MPIO2_6, and MPIO2_7. A value of 1 turns on
the pin driver, and a value of 0 3-states the pin. Because
this register powers up to all zeros, the pins will initially
be 3-stated at power-up. These pins also have internal
100
µ
A pull-down resistors, which can be disabled with
the
Multipurpose I/O Bank 3 Pull-down Enable (MPPE3)
register (
).
Register: 0xFF1A
Multipurpose I/O Bank 2 Input (MPI2)
Read Only
MPI2_[7:0]
Multipurpose I/O Bank 2 Input
[7:0]
These read only bits read the live input values on the I/O
MPIO2_0, MPIO2_1, MPIO2_2, MPIO2_3, MPIO2_4,
MPIO2_5, MPIO2_6, and MPIO2_7.
7
6
5
4
3
2
1
0
MPE2_7
MPE2_6
MPE2_5
MPE2_4
MPE2_3
MPE2_2
MPE2_1
MPE2_0
Defaults:
0
0
0
0
0
0
0
0
7
6
5
4
3
2
1
0
MPI2_7
MPI2_6
MPI2_5
MPI2_4
MPI2_3
MPI2_2
MMPI2_1
MPI2_0
Defaults:
0
0
0
0
0
0
0
0
Содержание Symbios SYM53C040
Страница 12: ...xii Preface...
Страница 90: ...4 18 SCSI and DMA Registers...
Страница 98: ...5 8 SFF 8067 Registers...
Страница 110: ...6 12 Two Wire Serial Registers...
Страница 126: ...7 16 Miscellaneous Registers...
Страница 160: ...8 34 System Registers...
Страница 184: ...9 24 Electrical Characteristics...
Страница 194: ...A 10 Register Summary...
Страница 214: ......