MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Block Control register i
b7 b6 b5b4 b3 b2b1 b0
Block control register i (BCi) (i=1 to 16) [Addresses 00D016 to 00DF16](See note 1)
B
Name
Functions
After reset R W
Indeterminate R W
b1 b0
0, 1 Display mode
selection bits
0
0
1
1
0: Display OFF
1: OSD mode
0: CC mode
(BCi0, BCi1)
1: EXOSD mode
2
Border control bit
(BCi2)
0: Border OFF
1: Border ON
Indeterminate R W
Indeterminate R W
b4 b3 CS6 Pre-divide Dot size
ratio
Display
layer
b6 b5
3, 4 Dot size selection
bits (BCi3, BCi4)
0
0
1Tc ✕ 1/2H
1Tc ✕ 1H
2Tc ✕ 2H
3Tc ✕ 3H
1Tc ✕ 1/2H
1Tc ✕ 1H
2Tc ✕ 2H
3Tc ✕ 3H
1Tc ✕ 1/2H
1Tc ✕ 1H
2Tc ✕ 2H
3Tc ✕ 3H
1Tc ✕ 1/2H
1Tc ✕ 1H
1Tc ✕ 1/2H
1Tc ✕ 1H
1.5Tc ✕ 1/2H
1.5Tc ✕ 1H
0
1
0
1
0
0
0
1
—
—
✕ 1
1
0
1
0
0
1
✕ 2
Layer1
Layer2
1
1
0
1
Indeterminate R W
5, 6 Pre-divide ratio •
layer selection bit
(BCi5, BCi6)
0
0
0
1
1
1
1
0
1
1
—
0
✕ 3
✕ 1
1
1
0
1
—
—
0
1
0
0
0
1
✕ 2
1
1
1
0
1
Indeterminate R W
7
OUT2 output control bit BC17: Window top boundary
(BCi7) (See note 2) BC27: Window bottom boundary
Notes 1: Note that MASK version the block control registers at addresses 00D016 to 00DB16
when programming.
2: Bit 4 of the color code 1 controls OUT1 output when bit 7 is "0".
Bit 4 of the color code 1 controls OUT2 output when bit 7 is "1".
3: CS6 : Bit 6 of the clock control register (address 0216 16
4: Tc : Pre-devided clock period for OSD
5: H : Hsync
)
Block Control Register i
Addresses 00D016 to 00DB16
124
RENESAS [ RENESAS TECHNOLOGY CORP ]
