DS04-28825-4E
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP For Screen Display Control
CMOS
ON
-
Screen Display Controller
MB90097
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DESCRIPTION
The MB90097 is the on-screen display controller for displaying text and graphics on the TV screen. Since it has
a three-channel output control function, small package, and low voltage requirement for operation, it is suitable
for on-screen display on video equipment such as camera-integrated VTRs.
The MB90097 provides a display screen made up of 28 characters by 12 lines, capable of displaying 512 different
characters each consisting of 12
18 dots. The display functions of the MB90097 includes a wealth of character
qualifying functions such as character background shading (shadow casting) and individual character size setting,
supporting 16-color display for each character. They also include the line background, screen background, and
sprite character display functions, enabling the screen to be displayed in a variety of configurations. The integrated
font ROM contains 512 different character patterns all of which can be set by the user.
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FEATURES
Character screen configuration: 28 characters
12 lines (maximum)
Character types: 512 different characters (integrated in ROM, user-definable through the entire area)
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PACKAGE
20-pin Plastic SSOP
(FPT-20P-M03)
2
MB90097
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Font configuration: 12
18 dots (font ROM configuration)
Capable of specifying the horizontal and vertical sizes of characters to be displayed.
One of the following three horizontal sizes (S, M, L) can be set for each character:
S size : 6 dots
M size : 9 dots
L size : 12 dots
Either of the following two vertical sizes (HA, HB) can be set for each line.
HA : 18 dots
HB : 12 dots
Display modes: Character trimming Enabled/Disabled (Set for each line)
Character background None/Solid-fill/Shaded background (concaved)/Shaded
background (convexed) (Set for each line)
Horizontal character merge/independent display with
shaded background (Set for each character)
Vertical line merge/independent display with shaded
background (Set for each line)
Character background extended display ON/OFF for line
spacings (Set for each line)
Line background None/Solid-fill/Shaded background (concaved)/Shaded
background (convexed) (Set for each line)
(Display extended to the left and right margins of the screen
and to the line spacing)
Character enlargement: Four types supported: Normal, Double width, Double height,
Double width
double height
(Set for each line)
Enlarged display dot interpolation function (Set for each line)
Character screen display position control:
Horizontal display position
Control in 2-dot units (movable through the entire screen)
Vertical display position
Control in 2-dot units (movable through the entire screen)
Line spacing control
Control in 1-dot units (Set between 0 to 7 dots for each
line; Displayed simultaneously at two areas above and
below the line.)
Sprite character control:
Sprite character display
OFF/ON
Sprite character types
256 types (character codes: 000
H
to 0FF
H
)
Sprite character trimming
Enabled/Disabled
Sprite character configuration
Two types: 1 character/Stack of 2 characters
Sprite character horizontal display position Control in 1-dot units (movable through the entire screen)
Sprite character vertical display position
Control in 1-dot units (movable through the entire screen)
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3
MB90097
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Screen background control: Screen background color OFF/ON
Display colors
Character color:
16 colors (Set for each character)
Character trimming color:
16 colors (Set for each line)
Character background color:
16 colors (Set for each character) *
Line background color:
16 colors (Set for each line)
Screen background color:
16 colors
Sprite character color:
16 colors
Sprite character trimming color:
16 colors
Shaded background frame highlight color: 16 colors
Shaded background frame shadow color: 16 colors
*: Transparent (Displaying the lower-layer color) when the character
background color (color code) = "0"
Display signal output: Color signal output: 4 bits (Supporting 16 colors)
Display period signals: 3 channels (Output selector circuit provided)
External interface: 16-bit serial inputs
Chip select
Serial clock
Serial data
Package : SSOP-20
Supply voltage: 3.3 V
4
MB90097
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PIN ASSIGNMENT
16
15
14
13
12
11
(Top view)
SCLK
CS
SIN
RESET
V
DD
SDR
XD
EXD
TEST
GND
HSYNC
VSYNC
VC0
VC1
VC2
BLKA
VC3
BLKB
TESTO
BLKC
(FPT-20P-M03)
1
2
3
4
5
6
7
8
9
10
17
18
19
20
5
MB90097
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PIN DESCRIPTIONS
Pin no.
Pin name
I/O
Function
1
SCLK
I
Shift clock input pin for serial transfer
This pin has an internal pull-up resistor.
2
CS
I
Chip select pin
This pin inputs a Low level signal for serial transfer.
The pin has an internal pull-up resistor.
3
SIN
I
Serial data input pin
This pin has an internal pull-up resistor.
4
RESET
I
Reset input pin
This pin inputs a Low level signal when turning the power on.
5
V
DD
--
+ 3 V power supply pin
6
SDR
I
Data input direction select pin for serial transfer
This pin inputs the Low level signal in the LSB-first transfer mode for data
input; it inputs the High level signal in the MSB-first transfer mode.
7
8
XD
EXD
O
I
External circuit pins for display dot clock generator
Connect these pins to external "L" and "C" to form an LC oscillator circuit.
For external input of a display dot clock, input the clock signal to the EXD
pin and leave the XD pin open.
9
TEST
I
LSI test input pin
Input the Low level signal during normal use.
10
GND
--
Ground pin
20
HSYNC
I
Horizontal sync signal input pin
19
VSYNC
I
Vertical sync signal input pin
18
17
16
14
VC0
VC1
VC2
VC3
O
O
O
O
Color code signal output pin
15
BLKA
O
Display period signal output pin for output channel A
13
BLKB
O
Display period signal output pin for output channel B
11
BLKC
O
Display period signal output pin for output channel C
12
TESTO
O
LSI test output pin
Leave this pin open (unconnected) during normal use.
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