LSI Symbios SYM53C040 Technical Manual page 146

Enclosure services processor
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8-20
Register: 0xFF24
Multipurpose I/O Bank 3 Latch (MPL3)
Read/Write
7
R
x
x
R
Reserved
MPL3_[3:0]
Multipurpose I/O Bank 3 Latch
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
7
R
1
1
R
Reserved
MPPE3_[3:0] Multipurpose I/O Bank 3 Pull-down Enable
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.
System Registers
4
3
MPL3_3
Defaults:
x
x
x
4
3
MPPE3_3 MPPE3_2 MPPE3_1 MPPE3_0
Defaults:
1
1
1
2
1
MPL3_2
MPL3_1
MPL3_0
x
x
2
1
1
1
0
x
[7:4]
[3:0]
0
1
[7:4]
[3:0]

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