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610
The settings for this register are effective only for the 144-pin version. There are no corresponding
pins for this register in the 112-pin and 120-pin versions. However, read/writes are possible.
Bit:
15
14
13
12
11
10
9
8
—
PA23
MD
—
PA22
MD
—
PA21
MD
—
PA20
MD
Initial value:
0
0
0
0
0
0
0
0
R/W:
R
R/W
R
R/W
R
R/W
R
R/W
Bit:
76
5
4
3
2
1
0
PA19
MD1
PA19
MD0
PA18
MD1
PA18
MD0
—
PA17
MD
—
PA16
MD
Initial value:
0
0
0
0
0
0
0
0
R/W:
R/W
R/W
R/W
R/W
R
R/W
R
R/W
•
Bit 15—Reserved: This bit always reads as 0. The write value should always be 0.
•
Bit 14—PA23 Mode (PA23MD): Selects the function of the PA23/
WRHH
pin.
Bit 14: PA23MD
Description
0
General input/output (PA23) (initial value) (
WRHH
in on-chip ROM invalid mode)
1
Most significant byte write output (
WRHH
) (PA23 in single chip mode)
•
Bit 13—Reserved: This bit always reads as 0. The write value should always be 0.
•
Bit 12—PA22 Mode (PA22MD): Selects the function of the PA22/
WRHL
pin.
Bit 12: PA22MD
Description
0
General input/output (PA22) (initial value) (
WRHL
in on-chip ROM invalid mode)
1
Write output (
WRHL
) (PA22 in single chip mode)
•
Bit 11—Reserved: This bit always reads as 0. The write value should always be 0.
•
Bit 10—PA21 Mode (PA21MD): Selects the function of the PA21/
CASHH
pin.
Bit 10: PA21MD
Description
0
General input/output (PA21) (initial value)
1
Column address output (
CASHH
) (PA21 in single chip mode)
•
Bit 9—Reserved: Always reads as 0. The write values should always be 0.
Содержание SH7041 Series
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