8-16
System Registers
Register: 0xFF1B
Multipurpose I/O Bank 2 Latch Mask (MPLM2)
Read/Write
MPLM2_[7:0] Multipurpose I/O Bank 2 Latch Mask
[7:0]
These read/write register bits define the write mask for
the
Multipurpose I/O Bank 2 Latch (MPL2)
register
). A value of 1 in any of these bits allows the
corresponding bit in the MPL2 to be modified.
Register: 0xFF1C
Multipurpose I/O Bank 2 Latch (MPL2)
Read/Write
MPL2_[7:0]
Multipurpose I/O Bank 2 Latch
[7:0]
These read/write register bits store the power-on value of
the I/O pins MPIO2_0, MPIO2_1, MPIO2_2, MPIO2_3,
MPIO2_4, MPIO2_5, MPIO2_6, and MPIO2_7. 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.
7
6
5
4
3
2
1
0
MPLM2_7 MPLM2_6 MPLM2_5 MPLM2_4 MPLM2_3 MPLM2_2 MPLM2_1 MPLM2_0
Defaults:
1
1
1
1
1
1
1
1
7
6
5
4
3
2
1
0
MPL2_7
MPL2_6
MPL2_5
MPL2_4
MPL2_3
MPL2_2
MPL2_1
MPL2_0
Defaults:
x
x
x
x
x
x
x
x
Summary of Contents for Symbios SYM53C040
Page 12: ...xii Preface...
Page 90: ...4 18 SCSI and DMA Registers...
Page 98: ...5 8 SFF 8067 Registers...
Page 110: ...6 12 Two Wire Serial Registers...
Page 126: ...7 16 Miscellaneous Registers...
Page 160: ...8 34 System Registers...
Page 184: ...9 24 Electrical Characteristics...
Page 194: ...A 10 Register Summary...
Page 214: ......
