ETC LC74980W

Ordering number : ENN6450A
CMOS IC
LC74980W
LCD TV Scan Converter IC
Overview
Specifications
The LC74980W is an LCD TV scan converter IC that
converts an NTSC TV signal to an XGA personal
computer video signal. This IC, in conjunction with a
digital decoder, a microcontroller, and an LCD panel, can
easily form an LCD TV video signal-processing circuit
system. Since the LC74980W performs resolution
conversion without an external frame memory, it can
reduce system costs. Since this IC also provides PAL TV
signal input and DTV inputs (480p and 480i formats), it
provides the functions required in the next generation of
LCD TV sets.
• Supply voltage: 3.3 V (input pins are 5 V tolerant)
• Maximum operating frequency: 65.0 MHz
• Package: SQFP208
Applications
• LCD TVs, monitors, and projectors
• PDP displays
• Digital TV sets (both home and car products)
Package Dimensions
unit: mm
3210-SQFP208
[LC74980W]
156
0.5
30.6
28.0
105
28.0
208
30.6
104
157
53
1
(0.5)
0.2
0.15
52
(3.2)
(1.25)
3.8max
• NTSC and PAL inputs: 8-bit digital YUV (CCIR 601) input
• DTV input: 8-bit digital YCbCr input
• Progressive-scan XGA RGB (6 bits per color, twophase) signal output
• YUV to RGB conversion and YCbCr to RGB conversion
• Interlaced to progressive scan conversion
• Resolution conversion (enlargement)
• Variable display size and display position
(independently settable in the horizontal and vertical
directions)
• Image quality adjustments: brightness, contrast, color,
sharpness, color phase, black balance, and white balance
• Built-in γ correction (programmable LUT technique)
• Dithering (8-bit to 6-bit conversion)
• Built-in OSD function (8 colors)
• I2C bus interface
• Constant frame-rate processing (identical frame periods
in the input and output signals) adopted so that no
external memory is required.
0.35
Features
SANYO: SQFP208
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
31000RM (OT) No. 6450-1/10
LC74980W
I/O Specifications
Output Specifications (Main output signals)
Input Specifications (Main input signals)
• Video signal: Two-phase XGA digital RGB signal
with 6 bits per color.
A single-phase output mode is also support, and can be
selected by settings using the I2C bus. (Output is from
the ODD pin in this case.)
• Synchronizing signals:
The period and polarity of both the horizontal and the
vertical signals may be set. The synchronizing signal
position is also variable.
A composite synchronizing signal can also be output
from the vertical output.
• Blanking signals:
Horizontal and vertical blanking signals are provided.
The periods and the polarities can be set.
A composite blanking signal can also be output from the
vertical output.
• Output processing clock:
• Video signals
TV: Two 8-bit digital YUV (CCIR 601) input systems.
The Y data is 8 bits, and the UV signal is an 8-bit
point sequential multiplexed signal.
Note: NTSC and PAL signals are referred to simply as
TV signals in this document.
DTV: One 8-bit digital YCbCr (CCIR 601) input
system. Supports the 480i and 480p formats.
Note: This IC does not perform frame rate conversion.
Thus only frame rates that fall within the
operating range of the LCD panel module used are
supported as input frame rates.
• Synchronizing signals:
Both horizontal and vertical synchronizing signal are
input as two independent systems. They are switched
internally.
Any input polarity may be used. The IC detects the
polarity internally.
• Blanking signal:
Provides as either a component signal or as a composite
signal.
• Input processing clock:
Two clock systems are input independently. They are
switched internally.
• Output processing clock: A fixed-frequency oscillator
provides 65.0 MHz clock.
In XGA mode, 65.0 MHz (DCLK1) and 32.5 MHz
(DCLK2) clocks are output.
Control Specifications
• I 2C bus: Used for setting internal registers and for
reading out status values. (SDA, SCL)
• Three-wire bus: Control bus used for OSD control and γ
correction settings. (AIDA, AICK, AICS)
• External control output: EXCTR pin can be used for
general-purpose control of circuits external to the IC
over the I2C bus.
Electrical Characteristics
Absolute Maximum Ratings at VSS = 0 V
Parameter
Symbol
Maximum supply voltage
Conditions
Ratings
VDD
Unit
–0.3 to +4.6
V
V
Input voltage
VI
–0.5 to VIN + 0.5
I/O voltages
VI, VO
–0.3 to VDD + 0.3
V
Storage temperature
Tstg
–55 to +125
°C
Operating temperature
Topr
–30 to +70
°C
Allowable Operating Ranges at Ta = –30 to +70°C
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
Supply voltage
VDD
3.0
3.3
3.6
V
Input voltage range
VIN
0
—
5.5
V
I/O Pin Capacitances at VDD = –VI = 0 V, Ta = 25°C
Parameter
Input pins
Output pins
Bidirectional pins
Symbol
Conditions
Ratings
min
typ
max
Unit
CIN
f = 1 MHz
—
—
10
pF
COUT
f = 1 MHz
—
—
10
pF
CI/O
f = 1 MHz
—
—
10
pF
No. 6450-2/10
LC74980W
DC Characteristics at Ta = –30 to +70°C, VDD = 3.0 to 3.6 V, VIDD = 3.0 to 5.5 V
Parameter
Symbol
Input high-level voltage
VIH
Input low-level voltage
VIL
Input high-level current
IIH
Input low-level current
IIL
Output high-level voltage
VOH
Ratings
Conditions
min
CMOS level
VOL
Output leakage current
IOZ
Pull-down resistance
RDN
Quiescent current*
IDD
Unit
max
0.7 VDD
—
—
V
0.75 VDD
—
—
V
CMOS level
—
—
0.2 VIDD
V
CMOS level Schmitt
—
—
0.15 VIDD
V
VI = VDD
–10
—
+10
µA
VI = VDD, with pull-down resistors attached.
+10
—
+100
µA
VI = VSS
–10
—
+10
µA
CMOS level Schmitt
Type B4, IOH = –2 mA
VDD – 0.8
—
—
V
Type B8, IOH = –4 mA
VDD – 0.8
—
—
V
Type B12, IOH = –6 mA
VDD – 0.8
—
—
V
—
—
0.4
V
Type B4, IOL = 2 mA
Output low-level voltage
typ
Type B8, IOL = 4 mA
—
—
0.4
V
Type B12, IOL = 6 mA
—
—
0.4
V
In the high-impedance output state
Outputs open, VI = VSS or VDD
–10
—
+10
µA
34.3
68.5
137
kΩ
—
—
100
µA
*: Note that the rating cannot be always guaranteed due to the circuit structure such as a case where the circuit includes a pull-down resistor.
Pins
Pin Assignment
105
DVDD
DCLK1B
DCLK1
DVSS
DVDD
BOODD5
BOODD4
BOODD3
BOODD2
BOODD1
BOODD0
DVSS
DVDD
GOODD5
GOODD4
GOODD3
GOODD2
GOODD1
GOODD0
DVSS
DVDD
ROODD5
ROODD4
ROODD3
ROODD2
ROODD1
ROODD0
DVSS
DVDD
BOEVEN5
BOEVEN4
BOEVEN3
BOEVEN2
BOEVEN1
BOEVEN0
DVSS
DVDD
GOEVEN5
GOEVEN4
GOEVEN3
GOEVEN2
GOEVEN1
GOEVEN0
DVSS
DVDD
ROEVEN5
ROEVEN4
ROEVEN3
ROEVEN2
ROEVEN1
ROEVEN0
DVSS
156
157
DVSS
DCLK2
DCLK2B
DVDD
DVSS
HOUT
VOUT
VIRST
DVDD
DVSS
XTAL
DVDD
DVSS
EXCTR
MUTE
AICS
AIDA
AICK
SDA
SCL
PDOWN1
PDOWN2
CLKIO
DVDD
DVSS
TSTOA7
TSTOA6
TSTOA5
TSTOA4
TSTOA3
TSTOA2
TSTOA1
TSTOA0
DVDD
DVSS
TSTOB7
TSTOB6
TSTOB5
TSTOB4
TSTOB3
TSTOB2
TSTOB1
TSTOB0
TSTMOD3
TSTMOD2
TSTMOD1
TSTMOD0
TSTSUB3
TSTSUB2
TSTSUB1
TSTSUB0
DVDD
208
155
150
145
140
135
130
125
120
115
110
105
160
100
165
95
170
90
175
85
180
80
LC74980W
185
75
190
70
195
65
200
60
205
55
10
15
20
25
30
35
40
45
50
DVSS
OSDRIN
OSDGIN
OSDBIN
OSDEN
YIN7
YIN6
YIN5
YIN4
YIN3
YIN2
YIN1
YIN0
DVDD
DVSS
UIN7
UIN6
UIN5
UIN4
UIN3
UIN2
UIN1
UIN0
DVDD
DVSS
VIN7
VIN6
VIN5
VIN4
VIN3
VIN2
VIN1
VIN0
DVDD
DVSS
CLKITV
DVDD
DVSS
CLKIDTV
DVDD
DVSS
DVSS
DVDD
SCANMOD
SCANEN
AVSS
PDO
AVDD
AVSS
VCOCNT
VCORNG
AVDD
5
1
104
DVDD
BLKVOUT
BLKHOUT
RST
DVSS
DVDD
PLLH
BLKIV
BLKIH
N.C
N.C
VIDTV
HIDTV
VITV
HITV
DVSS
DVDD
CLPCR
CLPCB
CLPY
CLPP
DVSS
DVDD
BIN0
BIN1
BIN2
BIN3
BIN4
BIN5
BIN6
BIN7
DVSS
DVDD
GIN0
GIN1
GIN2
GIN3
GIN4
GIN5
GIN6
GIN7
DVSS
DVDD
RIN0
RIN1
RIN2
RIN3
RIN4
RIN5
RIN6
RIN7
DVSS
53
Top view
52
A12972
No. 6450-3/10
LC74980W
Pin Functions
Pin No.
Pin
I/O type
I/O
Type
Connection
GND
Notes
1
DVSS
P
2
OSDRIN
I
g74980m03
Caption OSD microcontroller
Digital system ground
OSD red input
3
OSDGIN
I
g74980m03
Caption OSD microcontroller
OSD green input
4
OSDBIN
I
g74980m03
Caption OSD microcontroller
OSD blue input
5
OSDEN
I
g74980m03
Caption OSD microcontroller
OSD data enable
6
YIN7
I
g74980m03
Digital decoder
7
YIN6
I
g74980m03
or
8
YIN5
I
g74980m03
ADC
MSB
TV Y signal input
or
9
YIN4
I
g74980m03
10
YIN3
I
g74980m03
DTV Y signal input
11
YIN2
I
g74980m03
12
YIN1
I
g74980m03
13
YIN0
I
g74980m03
14
DVDD
P
15
DVSS
P
16
UIN7
I
g74980m03
Digital decoder
17
UIN6
I
g74980m03
or
18
UIN5
I
g74980m03
ADC
19
UIN4
I
g74980m03
20
UIN3
I
g74980m03
21
UIN2
I
g74980m03
22
UIN1
I
g74980m03
23
UIN0
I
g74980m03
24
DVDD
P
25
DVSS
P
26
VIN7
I
g74980m03
Digital decoder
27
VIN6
I
g74980m03
or
28
VIN5
I
g74980m03
ADC
29
VIN4
I
g74980m03
30
VIN3
I
g74980m03
31
VIN2
I
g74980m03
32
VIN1
I
g74980m03
33
VIN0
I
g74980m03
34
DVDD
P
35
DVSS
P
36
CLKITV
I
37
DVDD
P
38
DVSS
P
39
CLKIDTV
I
40
DVDD
P
Power supply
41
DVSS
P
GND
42
DVSS
P
GND
43
DVDD
P
Power supply
44
SCANMOD
I
g74980m03
Open
Scan test mode
45
SCANEN
I
g74980m03
Open
Scan test enable
46
AVSS
P
47
PDO
O
48
AVDD
P
Power supply
Analog system power supply: 3.3 V
49
AVSS
P
Power supply
Analog system ground
50
VCOCNT
I
g74100m06
Loop filter
51
VCORNG
I
g74100m06
Resistor
52
AVDD
P
LSB
Power supply
GND
TV UV multiplexed signal input
or
Digital system power supply: 3.3 V
Digital system ground
MSB
DTV Cr signal input
LSB
Power supply
GND
Digital decoder
Power supply
Digital system power supply: 3.3 V
Digital system ground
TV clock input (data rate)
Digital system power supply: 3.3 V
GND
Digital system ground
PLL
DTV clock input
Power supply
zwp3vp113
MSB
LSB
GND
g74980m05
Digital system ground
DTV Cb signal input
Power supply
g74980m05
Digital system power supply: 3.3 V
Loop filter
Power supply
Digital system power supply: 3.3 V
Digital system ground
Digital system ground
Digital system power supply: 3.3 V
Analog system ground
Charge pump output (Leave open when unused.)
VCO control input (Connect to AVSS when unused.)
VCO bias resistor input (Connect to AVSS when unused.)
Analog system power supply: 3.3 V
Continued on next page.
No. 6450-4/10
LC74980W
Continued from preceding page.
I/O type
Pin No.
Pin
53
DVSS
P
54
RIN7
I
g74980m03
55
RIN6
I
g74980m03
56
RIN5
I
g74980m03
57
RIN4
I
g74980m03
58
RIN3
I
g74980m03
59
RIN2
I
g74980m03
60
RIN1
I
g74980m03
61
RIN0
I
g74980m03
62
DVDD
P
63
DVSS
P
64
GIN7
I
g74980m03
65
GIN6
I
g74980m03
66
GIN5
I
g74980m03
67
GIN4
I
g74980m03
68
GIN3
I
g74980m03
69
GIN2
I
g74980m03
70
GIN1
I
g74980m03
71
GIN0
I
g74980m03
72
DVDD
P
73
DVSS
P
74
BIN7
I
g74980m03
75
BIN6
I
g74980m03
76
BIN5
I
g74980m03
77
BIN4
I
g74980m03
78
BIN3
I
g74980m03
79
BIN2
I
g74980m03
80
BIN1
I
g74980m03
81
BIN0
I
g74980m03
82
DVDD
P
83
DVSS
P
84
CLPP
O
I/O
Type
Connection
GND
Digital system ground
ADC
MSB
Y signal input
LSB
Power supply
Digital system power supply: 3.3 V
GND
Digital system ground
ADC
MSB
U signal input
LSB
Power supply
Digital system power supply: 3.3 V
GND
Digital system ground
ADC
MSB
V signal input
LSB
Power supply
POB4
Notes
Digital system power supply: 3.3 V
GND
Digital system ground
ADC
Clamp pulse
85
CLPY
O
POT4
ADC
Y clamp level
86
CLPCB
O
POT4
ADC
Cb clamp level
87
CLPCR
O
POT4
88
DVDD
P
89
DVSS
P
90
HITV
I
ADC
Power supply
GND
g74980m04
Cr clamp level
Digital system power supply: 3.3 V
Digital system ground
TV decoder
TV horizontal synchronizing signal input
TV vertical synchronizing signal input
91
VITV
I
g74980m04
TV decoder
92
HIDTV
I
g74980m04
Digital interface
93
VIDTV
I
g74980m04
Digital interface
94
N.C
—
—
—
—
95
N.C
—
—
—
—
96
BLKIH
I
g74980m02
Digital interface
97
BLKIV
I
g74980m02
Digital interface
98
PLLH
O
POB4
PLL
99
DVSS
P
GND
100
DVDD
P
Power supply
DTV horizontal synchronizing signal input
DTV vertical synchronizing signal input
Horizontal blanking signal input or composite blanking signal
Vertical blanking signal input (Held high in composite mode)
PLL internal divider output
Digital system ground
Digital system power supply: 3.3 V
101
RST
I
g74980m01
Initialization circuit
System reset (reset to low)
102
BLKHOUT
O
POB8
Initialization circuit
Horizontal data enable
103
BLKVOUT
O
POB8
Initialization circuit
104
DVDD
P
Power supply
Vertical data enable or composite data enable
Digital system power supply: 3.3 V
Continued on next page.
No. 6450-5/10
LC74980W
Continued from preceding page.
Pin No.
Pin
I/O type
I/O
Type
105
DVSS
P
106
ROEVEN0
O
POB4
107
ROEVEN1
O
POB4
108
ROEVEN2
O
POB4
109
ROEVEN3
O
POB4
110
ROEVEN4
O
POB4
111
ROEVEN5
O
POB4
112
DVDD
P
Connection
GND
LCD module
DVSS
P
114
GOEVEN0
O
POB4
115
GOEVEN1
O
POB4
116
GOEVEN2
O
POB4
117
GOEVEN3
O
POB4
118
GOEVEN4
O
POB4
119
GOEVEN5
O
POB4
120
DVDD
P
Digital system ground
LSB
Red signal output (even)
MSB
Power supply
113
Notes
GND
LCD module
Digital system power supply: 3.3 V
Digital system ground
LSB
Green signal output (even)
MSB
Power supply
GND
Digital system power supply: 3.3 V
121
DVSS
P
122
BOEVEN0
O
POB4
123
BOEVEN1
O
POB4
124
BOEVEN2
O
POB4
125
BOEVEN3
O
POB4
126
BOEVEN4
O
POB4
127
BOEVEN5
O
POB4
128
DVDD
P
Power supply
129
DVSS
P
GND
130
ROODD0
O
POB4
131
ROODD1
O
POB4
Red signal output (odd)
132
ROODD2
O
POB4
or
133
ROODD3
O
POB4
Red signal single-phase output
134
ROODD4
O
POB4
135
ROODD5
O
POB4
136
DVDD
P
LCD module
Digital system ground
LSB
Blue signal output (even)
MSB
LCD module
Digital system power supply: 3.3 V
Digital system ground
LSB
MSB
Power supply
GND
Digital system power supply: 3.3 V
137
DVSS
P
138
GOODD0
O
POB4
139
GOODD1
O
POB4
Green signal output (odd)
140
GOODD2
O
POB4
or
141
GOODD3
O
POB4
Green signal single-phase output
142
GOODD4
O
POB4
143
GOODD5
O
POB4
144
DVDD
P
LCD module
Digital system ground
LSB
MSB
Power supply
GND
Digital system power supply: 3.3 V
145
DVSS
P
146
BOODD0
O
POB4
147
BOODD1
O
POB4
Blue signal output (odd)
148
BOODD2
O
POB4
or
149
BOODD3
O
POB4
Blue signal single-phase output
150
BOODD4
O
POB4
151
BOODD5
O
POB4
152
DVDD
P
Power supply
153
DVSS
P
GND
154
DCLK1
O
POB12
155
DCLK1B
O
POB12
156
DVDD
P
LCD module
Digital system ground
LSB
MSB
LCD module
Digital system power supply: 3.3 V
Digital system ground
Data clock 1 (for single-phase data output)
LCD module
Inverted data clock 1 (for single-phase data output)
Power supply
Digital system power supply: 3.3 V
Continued on next page.
No. 6450-6/10
LC74980W
Continued from preceding page.
Pin No.
Pin
I/O type
I/O
Type
157
DVSS
P
158
DCLK2
O
POB12
159
DCLK2B
O
POB12
160
DVDD
P
Connection
GND
—
—
Power supply
Notes
Digital system ground
Data clock 2 (for two-phase data output)
Inverted data clock 2 (for two-phase data output)
Digital system power supply: 3.3 V
161
DVSS
P
GND
Digital system ground
162
HOUT
O
POB8
LCD module
Horizontal sync output
163
VOUT
O
POB8
LCD module
Vertical synchronizing signal output or composite synchronizing
signal output
164
VIRST
O
POB4
165
DVDD
P
Power supply
166
DVSS
P
GND
Digital system ground
VCO
Crystal oscillator circuit output
g74980m01
XTAL
Crystal oscillator reset
Digital system power supply: 3.3 V
167
XTAL
I
168
DVDD
P
Power supply
169
DVSS
P
GND
170
EXCTR
O
POB4
—
171
MUTE
I
g74980m02
Microcontroller
Mute control input (mute to low)
172
AICS
I
g74980m02
Microcontroller
3-wire bus control chip select
173
AIDA
I
g74980m02
Microcontroller
3-wire bus control bus data
174
AICK
I
g74980m02
Microcontroller
3-wire bus control bus clock
175
SDA
B
g74980m06
Microcontroller
I2C control data
176
SCL
I
g74980m02
Microcontroller
I2C control clock
177
PDOWN1
I
g74980m01
Microcontroller
Power down 1 (low in normal mode)
178
PDOWN2
I
g74980m01
Microcontroller
179
CLKI0
O
POB12
—
180
DVDD
P
Power supply
181
DVSS
P
GND
182
TSTOA7
O
POB4
183
TSTOA6
O
POB4
184
TSTOA5
O
POB4
185
TSTOA4
O
POB4
186
TSTOA3
O
POB4
187
TSTOA2
O
POB4
188
TSTOA1
O
POB4
189
TSTOA0
O
POB4
190
DVDD
P
OPEN
DVSS
P
192
TSTOB7
O
POB4
193
TSTOB6
O
POB4
194
TSTOB5
O
POB4
195
TSTOB4
O
POB4
196
TSTOB3
O
POB4
197
TSTOB2
O
POB4
198
TSTOB1
O
POB4
199
TSTOB0
O
POB4
200
TSTMOD3
I
g74980m03
201
TSTMOD2
I
g74980m03
202
TSTMOD1
I
g74980m03
203
TSTMOD0
I
g74980m03
204
TSTSUB3
I
g74980m03
205
TSTSUB2
I
g74980m03
206
TSTSUB1
I
g74980m03
207
TSTSUB0
I
g74980m03
208
DVDD
P
External control output (output controlled over the I2C bus)
Power down 2 (high in normal mode)
Input system clock output
Digital system power supply: 3.3 V
Digital system ground
MSB
Test outputs
LSB
Power supply
191
Digital system power supply: 3.3 V
Digital system ground
GND
OPEN
Digital system power supply: 3.3 V
Digital system ground
MSB
Test outputs
LSB
OPEN
Test mode
OPEN
Test sub-mode
Power supply
Digital system power supply: 3.3 V
No. 6450-7/10
LC74980W
Pin Type
I/O type
Applicable pins
Function
Equivalent circuit
RST
g74980m01
PDOWN1 to 2
3 to 5 V voltage
handling input
XTAL
A12973
AICS, AIDA, AICK
g74980m02
SCL
BLKIH, BLKIV
3 to 5 V voltage
handling Schmitt
input
A12974
MUTE
OSDRIN, OSDGIN, OSDBIN, OSDEN
YIN0 to 7, UIN0 to 7, VIN0 to 7
g74980m03
SCANMOD, SCANEN
RIN0 to 7, GIN0 to 7, BIN0 to 7
3 to 5 V voltage
handling pull-down
input
TSTMOD0 to 3, TSTSUB0 to 3
A12975
Leave open when unused.
g74980m04
HITV, VITV
HIDTV, VIDTV
3 to 5 V voltage
handling pull-down
Schmitt input
A12976
A12976
g74980m05
CLKITV
CLKIDTV
3 to 5 V voltage
handling OE input
A12977
CLPP, PLLH,
POB4
ROEVEN0 to 5, GOEVEN0 to 5, BOEVEN0 to 5
ROODD0 to 5, GOODD0 to 5, BOODD0 to 5
4 mA drive output
VIRST, EXCTR, TST0A0 to 7, TST0B0 to 7
POB8
POB12
POT4
BLKHOUT, BLKVOUT
HOUT, VOUT
DCLK1, DBLK1B, DCLK2, DCLK2B
CLKI0
CLPY, CLPCB, CLPCR
8 mA drive output
A12978
12 mA drive output
4 mA 3-state drive
output
A12979
g74980m06
SDA
Open-drain I/O
A12980
No. 6450-8/10
Output processing
Output timing
generator circuit
• OSD
• γ correction
• Color-depth conversion
• Background and blanking addition
I2C bus control interface
B
G
R
6
6
6
6
6
6
BOEVEN
BOODD
GOEVEN
GOODD
ROEVEN
ROODD
CLKITV
CLKIDTV
BLKIH
BLKIV
VITV
VIDTV
Three-wire bus
control interface
AICK/AIDA/AICS
Input clock generator
CLKIO
SDA/SCL
XTAL
Output clock generator
A12981
DCLK2B
DCLK1B
DCLK2
DCLK1
BLKVOUT
BLKHOUT
VOUT
HOUT
Input timing
generator circuit
• Enlargement processing
Resolution conversion
HITV
HIDTV
B
G
R
EXCTR
8
• YCbC → RGB
• YUV → RGB
Input processing
MUTE
RIN [7 : 0]
BIN [7 : 0]
GIN [7 : 0]
VIN [7 : 0]
UIN [7 : 0]
YIN [7 : 0]
LC74980W
IC Internal Block Diagram
No. 6450-9/10
LC74980W
Supplementary Documentation: Sample Application (LCD TV)
NTSC/PAL
TV
Tuner
SW
VCR
Decoder
Y
U/V
LC74980W
8
Selector
8
8
D-TV/DVD
Y Cb
480I/480P
YIN
UIN
TFT-LCD
MODULE
(XGA)
VIN
Cr
A/D
A12982
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of March, 2000. Specifications and information herein are subject to
change without notice.
PS No. 6450-10/10