LSI Symbios SYM53C040 Technical Manual page 143

Enclosure services processor
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Register: 0xFF1D
Multipurpose I/O Bank 2 Pull-down Enable (MPPE2)
Read/Write
7
6
MPPE2_7 MPPE2_6 MPPE2_5 MPPE2_4 MPPE2_3 MPPE2_2 MPPE2_1 MPPE2_0
1
1
MPPE2_[7:0] Multipurpose I/O Bank 2 Pull-down Enable
These read/write register bits determine if pull-downs are
active 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 indicates the pull-down is active,
a value of 0 indicates the pull-down is inactive.
Register: 0xFF20
Multipurpose I/O Bank 3 Output (MPO3)
Read/Write
7
R
0
0
R
Reserved
MPO3_[3:0]
Multipurpose I/O Bank 3 Output
The values stored in these register bits are driven on the
I/O pins MPIO3_0, MPIO3_1, MPIO3_2, and MPIO3_3
when the corresponding pin enable in register 0xFF21 is
set.
5
4
3
Defaults:
1
1
1
4
3
MPO_3
Defaults:
0
0
0
2
1
1
1
2
1
MPO_2
MPO_1
MPO_0
0
0
0
1
[7:0]
0
0
[7:4]
[3:0]
8-17

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