MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Window L Register 1
b7 b6 b5b4 b3 b2b1 b0
Window L register 1 (WL1) [Address 021D16
]
B
Name
Functions
After reset
R
W
0
to
7
Top boundary position (low-order 8 bits)
TH ✕
(setting value of low-order 2 bits of WL2
+ setting value of high-order 4 bits of WL1
+ setting value of low-order 4 bits of WL1
Indeterminate R W
Control bits of window
top boundary
(WL10 to WL17)
(See note 1)
✕
✕
✕
162
161
160)
Notes 1: Set values fit for the following condition: (WH1+WH2 ✕162)<(WL1+WL2✕ꢀ
162)
2: T is cycle of HSYNC
3: WL2: Window L register 2
ꢀ
H
.
Fig. 98. Window L Register 1
Window L Register 2
b7 b6 b5b4 b3 b2b1 b0
Window L register 2 (WL2) [Address 021F16
]
B
Name
Functions
After reset
R
W
0, 1
Top boundary position (high-order 2 bits)
TH ✕
(setting value of low-order 2 bits of WL2
+ setting value of high-order 4 bits of WL1
Indeterminate R W
Control bits of window
top boundary
(WL20, WL21)
(See note 1)
✕
✕
✕
162
161
160)
+ setting value of low-order 4 bits of WL1
2
to
7
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are indeterminate.
Indeterminate R —
Notes 1: Set values fit for the following condition: (WH1+WH2 ✕162)<(WL1+WL2✕ꢀ
162)
2: T is cycle of HSYNC
3: WL1: Window L register 1
ꢀ
H
.
Fig. 99. Window L Register 2
97
RENESAS [ RENESAS TECHNOLOGY CORP ]
