LSI Symbios SYM53C040 Technical Manual page 153

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Multipurpose LED Bank 2 Output registers (0xFF38,
0xFF39), they can be used as input pins.
Register: 0xFF3B
Multipurpose LED Bank 1H Input (MLI1H)
Read Only
7
6
R
MLI1_7
0
0
R
Reserved
MLI1_[7:4]
Multipurpose LED Bank 1H Input
The bits in this read only register read the live input value
on the MPLED1_4, MPLED1_5, MPLED1_6, and
MPLED1_7 pins. If these pins are 3-stated using the
Multipurpose LED Bank 2 Output registers (0xFF38,
0xFF39), they can be used as input pins.
Register: 0xFF3C
Multipurpose LED Bank 1L Latch Mask (MLLM1L)
Read/Write
7
6
R
MLLM1_3
0
0
R
Reserved
MLLM1_[3:0] Multipurpose LED Bank 1L Latch Mask
These read/write register bits define the write mask for
the
Multipurpose LED Bank 1L Latch Mask (MLLM1L)
register (0xFF3E) and the
Latch Mask (MLLM1H)
any of these bits allows the corresponding bit in MLL1L
and MLL1H to be modified.
5
4
3
R
MLI1_6
R
Defaults:
0
0
0
5
4
3
R
MLLM1_2
R
Defaults:
0
0
0
register (0xFF3F). A value of 1 in
2
1
MLI1_5
R
0
0
[7, 5, 3, 1]
[6, 4, 2, 0]
2
1
MLLM1_1
R
0
0
[7, 5, 3, 1]
[6, 4, 2, 0]
Multipurpose LED Bank 1H
0
MLI1_4
0
0
MLLM1_0
0
8-27

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