8-20
System Registers
Register: 0xFF24
Multipurpose I/O Bank 3 Latch (MPL3)
Read/Write
R
Reserved
[7:4]
MPL3_[3:0]
Multipurpose I/O Bank 3 Latch
[3:0]
These read/write register bits store the power-on value of
the I/O pins MPIO3_0, MPIO3_1, MPIO3_2, and
MPIO3_3. The values on these pins are latched into this
register on the deasserting edge of the RESET/ input
signal or the internal power-on reset.
Register: 0xFF25
Multipurpose I/O Bank 3 Pull-down Enable (MPPE3)
Read/Write
R
Reserved
[7:4]
MPPE3_[3:0] Multipurpose I/O Bank 3 Pull-down Enable
[3:0]
These read/write register bits determine if pull-downs are
active on the I/O pins MPIO3_0, MPIO3_1, MPIO3_2,
and MPIO3_3. A value of 1 indicates the pull-down is
active, a value of 0 indicates the pull-down is inactive.
7
4
3
2
1
0
R
MPL3_3
MPL3_2
MPL3_1
MPL3_0
Defaults:
x
x
x
x
x
x
x
x
7
4
3
2
1
0
R
MPPE3_3 MPPE3_2 MPPE3_1 MPPE3_0
Defaults:
1
1
1
1
1
1
1
1
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: ......