SANYO LA76070

Ordering number : ENN5844
Monolithic Linear IC
LA76070
NTSC Color Television IC
Overview
Package Dimensions
The LA76070 is an NTSC color television IC. In addition
to providing IIC bus control based rationalization of IC
control and the adjustment manufacturing process
associated with the TV tube itself, it also includes all
functions actually required in mass-produced television
sets. As such, it is an extremely practical bus control IC.
unit: mm
3128-DIP52S
[LA76070]
0.25
* The LA7840/41 or LA7845N/46N is recommended as the vertical output
IC for use with this product.
13.8
27
15.24
52
1
26
4.25
0.48
1.05
1.78
0.75
0.51min
3.8
• I 2 C bus control, VIF, SIF, Y, C, and deflection
integrated on a single chip.
5.1max
46.0
Functions
SANYO: DIP52S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Rating
Unit
V4 max
9.6
V26 max
9.6
V
Maximum power supply current
I21 max
25
mA
Maximum power supply voltage
Ta ≤ 65°C*
V
Allowable power dissipation
Pd max
1.3
W
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–55 to +150
°C
Rating
Units
Note: *Provided on a printed circuit board: 83.2 × 86.0 × 1.6 mm, material: Bakelite
Operating Conditions at Ta = 25°C
Parameter
Recommended power supply voltage
Recommended power supply current
Operating power supply voltage range
Operating power supply current range
Symbol
Conditions
V4
7.6
V26
7.6
V
V
I21
19
mA
V4 op
7.3 to 7.9
V26 op
7.3 to 7.9
V
V
121 op
16 to 25
mA
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
70999 RM (OT) No. 5844-1/27
LA76070
Electrical Characteristics at Ta = 25°C, VCC = V4 = V26 = 7.6 V, ICC = I21 = 19 mA
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
[Circuit Voltages and Currents]
Horizontal power supply voltage
IF power supply current (V4)
Video, chroma,
and vertical power supply current (V26)
HVCC
I4 (IFICC)
IF AGC: 5 V
I26 (YCVICC)
7.2
7.6
8.0
V
38
46
54
mA
79.5
93.5
107.5
mA
Vdc
[VIF Block]
AFT output voltage with no signal
VAFTn
With no input signal
2.8
3.8
4.8
Video output voltage with no signal
VOn
With no input signal
4.7
4.9
5.1
APC pull-in range (U)
fPU
After APC and PLL DAC adjustment
1.0
APC pull-in range (L)
fPL
After APC and PLL DAC adjustment
1.0
Maximum RF AGC voltage
VRFH
CW = 91 dBµ, DAC = 0
7.7
8.2
9.0
Minimum RF AGC voltage
VRFL
CW = 91 dBµ, DAC = 63
0
0.2
0.4
RF AGC Delay Pt (@DAC = 0)
RFAGC0
DAC = 0
RF AGC Delay Pt (@DAC = 63)
RFAGC63
DAC = 63
Vdc
MHz
MHz
96
Vdc
Vdc
dBµ
86
dBµ
Maximum AFT output voltage
VAFTH
CW = 93 dBµ, variable frequency
6.2
6.5
7.6
Vdc
Minimum AFT output voltage
VAFTL
CW = 93 dBµ, variable frequency
0.5
0.9
1.2
Vdc
AFT detection sensitivity
VAFTS
CW = 93 dBµ, variable frequency
33
25
17
mV/kHz
VO
93 dBµ, 87.5% Video MOD
1.8
2.0
2.2
Vp-p
VOtip
93 dBµ, 87.5% Video MOD
2.4
2.6
2.8
Vdc
43
46
dBµ
Video output amplitude
Synchronization signal tip level
Input sensitivity
Vi
Output at –3 dB
Video-to-sync ratio (@100 dBµ)
V/S
100 dBµ, 87.5% Video MOD
2.5
3.0
Differential gain
DG
93 dBµ, 87.5% Video MOD
2.4
2
10
%
Differential phase
DP
93 dBµ, 87.5% Video MOD
2
10
deg
Video signal-to-noise ratio
S/N
CW = 93 dBµ
920 kHz beat level
I920
V3.58 MHz/V920 kHz
55
58
dB
–50
dB
[Video and Switching Block]
External video gain
AUXG
Stair step, 1 V p-p
5.5
6.0
6.5
dB
External video sync signal tip voltage
AUXS
Stair step, 1 V p-p
–0.2
0.0
+0.2
Vdc
External video crosstalk
AUXC
4.2 MHz, 1Vp-p
Internal video output level
INTO
93 dBµ, 87.5% Video MOD
–0.1
0.0
+0.1
Vp-p
464
474
484
mVrms
50
dBµ
100 k
Hz
0.5
%
60
dB
[SIF Block]
FM detector output voltage
FM limiting sensitivity
FM detector output bandwidth
SOADJ
SLS
Output at –3 dB
SF
Output at –3 dB
FM detector output total
harmonic distortion
STHD
FM = ±25 kHz
AM rejection ratio
SAMR
AM = 30 %
SIF signal-to-noise ratio
SSN
50
40
dB
60
dB
[Audio Block]
Maximum gain
Adjustment range
Frequency characteristics
Muting
Total harmonic distortion
Signal-to-noise ratio
AGMAX
1 kHz
ARANGE
–2.5
0.0
60
67
AF
20 kHz
–3.0
AMUTE
20 kHz
75
ATHD
ASN
+2.5
dB
dB
+3.0
dB
dB
1 kHz, 400 m Vrms, Vo1: MAX
0.5
DIN.Audio
65
75
dB
dB
[Chroma Block]
ACC amplitude characteristics 1
ACCM1
Input: +6 dB/0 dB, 0 dB = 40 IRE
0.8
1.0
1.2
times
ACC amplitude characteristics 2
ACCM2
Input: –14 dB/0 dB
0.7
1.0
1.1
times
B-Y/Y amplitude ratio
CLRBY
100
125
140
%
Color control characteristics 1
CLRMN
Color MAX/NOM
1.6
1.8
2.1
times
Color control characteristics 2
CLRMM
Color MAX/MIN
33
40
50
dB
Continued on next page.
No. 5844-2/27
LA76070
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
min
typ
1
Unit
max
Color control sensitivity
CLRSE
Tint center
TINCEN
TINT NOM
–15
2
4
%/bit
–3
Tint control maximum
TINMAX
TINT MAX
30
deg
45
60
Tint control minimum
TINMIN
TINT MIN
–60
deg
–45
–30
Tint control sensitivity
TINSE
0.7
deg
2.0
deg/bit
Demodulator output ratio R-Y/B-Y
RB
0.75
0.85
0.95
Demodulator output ratio G-Y/B-Y
GB
0.28
0.33
0.38
Demodulator angle B-Y/R-Y
ANGBR
92
99
107
deg
Demodulator angle G-Y/B-Y
ANGGB
227
237
247
deg
–42
–37
–30
dB
+350
Hz
–350
Hz
Killer operating point
KILL
Chrominance VCO free-running frequency
CVCOF
Chrominance pull-in range (+)
PULIN+
Chrominance pull-in range (–)
PULIN–
0 dB = 40 IRE
Deviation from 3.579545 MHz
–350
350
Hz
Auto-flesh characteristic 73°
AF 073
5
10
20
deg
Auto-flesh characteristic 118°
AF 118
–7
0
+7
deg
Auto-flesh characteristic 163°
AF 163
–20
–10
–5
deg
Overall video gain
(Contrast set to maximum)
CONT63
10
12
14
dB
Contrast adjustment characteristic
(Normal/maximum)
CONT32
–7.5
–6.0
–4.5
dB
Contrast adjustment characteristic
(Minimum/maximum)
CONT0
–17
–14
–11
dB
Yf0
–6.0
–3.5
0.0
dB
[Video Block]
Video frequency characteristic
Trap & D = 0
Chrominance trap level
Trap & D = 1
Ctrap
DC propagation
ClampG
Y delay, f0 = 1
YDLY
Maximum black stretching gain
Sharpness adjustment range
–20
95
100
dB
105
430
%
ns
BKSTmax
6
13
20
IRE
(normal)
Sharp16
4
6
8
dB
(max)
Sharp31
9.0
11.5
14.0
dB
(min)
Sharp0
–6.0
–3.5
–1.0
dB
RGBBLK
1.4
1.6
1.8
V
Horizontal/vertical blanking output level
[OSD Block]
FSTH
0.9
1.2
1.7
V
Red RGB output level
OSD fast switch threshold
ROSDH
220
250
280
IRE
Green RGB output level
GOSDH
220
250
280
IRE
Blue RGB output level
BOSDH
220
250
280
IRE
Analog OSD R output level
gain matching
RRGB
1.5
1.9
2.3
Ratio
Linearity
LRRGB
45
50
60
%
Analog OSD G output level
gain matching
GRGB
1.5
1.9
2.3
Ratio
Linearity
LGRGB
45
50
60
%
Analog OSD B output level
gain matching
BRGB
1.5
1.9
2.3
Ratio
Linearity
LBRGB
45
50
60
%
[RGB Output (cutoff and drive) Block]
Brightness control (normal)
BRT64
2.1
2.65
3.2
V
High brightness (maximum)
BRT127
15
20
25
IRE
Low brightness (minimum)
BRT0
–25
–20
–15
IRE
Continued on next page.
No. 5844-3/27
LA76070
Continued from preceding page.
Parameter
Cutoff control
(Bias control)
Drive adjustment
Symbol
Conditions
Ratings
min
typ
max
(minimum)
Vbias0
2.1
2.65
3.2
(maximum)
Vbias127
2.45
3.0
3.55
Resolution
Vbiassns
4
RBout127
2.9
Gout127
2.4
Maximum output
Output attenuation
Unit
V
V
mV/Bit
Vp-p
Vp-p
RBout0
7
9
11
dB
Ssync
3
8
13
IRE
∆fH
15600
15734
15850
Hz
fH PULL
±400
[Deflection Block]
Sync separator sensitivity
Horizontal free-running frequency
deviation
Horizontal pull-in range
Horizontal output pulse saturation
voltage
V Hsat
Horizontal output pulse phase
HPHCEN
Horizontal position adjustment range
HPHrange
Horizontal position adjustment
maximum variability
X-ray protection circuit operating
voltage
Hz
0
0.06
0.4
V
9.5
10.5
11.5
µs
4 bits
±2
HPHstep
VXRAY
0.54
0.64
µs
530
ns
0.74
V
[Vertical screen Size Adjustment]
Vertical ramp output amplitude @32
Vsize32
VSIZE: 100000
0.47
0.82
1.17
Vp-p
Vertical ramp output amplitude @0
Vsize0
VSIZE: 000000
0.13
0.48
0.83
Vp-p
Vertical ramp output amplitude @63
Vsize63
VSIZE: 111111
0.80
1.15
1.50
Vp-p
[Vertical screen Position Adjustment]
Vertical ramp DC voltage @32
Vdc32
VDC: 100000
3.6
3.8
4.0
Vdc
Vertical ramp DC voltage @0
Vdc0
VDC: 000000
3.2
3.4
3.6
Vdc
Vertical ramp DC voltage @63
Vdc63
VDC: 111111
4.0
4.2
4.4
Vdc
No. 5844-4/27
LA76070
LA76070 BUS: Initial Conditions
Initial test conditions
Initial test conditions
Register
(continued)
Register
T Enable
0 HEX
Video SW
0 HEX
Video Mute
1 HEX
PLL Tuning
40 HEX
Sync Kill
0 HEX
Audio Mute
1 HEX
AFC Gain
0 HEX
APC Det Adjust
20 HEX
Horizontal Phase
4 HEX
V CD Mode
0 HEX
IF AGC SW
0 HEX
Vertical DC
20 HEX
AFT Defeat
0 HEX
Vertical Kill
0 HEX
RF AGC Delay
20 HEX
Col Kill
0 HEX
Vertical Size
20 HEX
Red Bias
00 HEX
Green Bias
00 HEX
Blue Bias
00 HEX
Blanking Defeat
0 HEX
Red Drive
7F HEX
Blue Drive
7F HEX
Color Difference Mode Enable
0 HEX
Brightness Control
40 HEX
Contrast Test Enable
0 HEX
Contrast Control
40 HEX
Trap & Delay Enable SW
0 HEX
Auto Flesh
0 HEX
Black Stretch Defeat
0 HEX
Sharpness Control
10 HEX
Tint Test Enable
0 HEX
Tint Control
40 HEX
Color Test Enable
0 HEX
Color Control
40 HEX
Vertical Test
0 HEX
Video Level
4 HEX
FM Level
10 HEX
BNI Enable
0 HEX
Audio SW
0 HEX
Volume Control
00 HEX
No. 5844-5/27
LA76070
LA76070 BUS: Control Register Descriptions
Control register descriptions
Register name
Bits
General descriptions
T Enable
1
Disable the Test SW & enable Video Mute SW
Video Mute
1
Disable video outputs
Sync Kill
1
Force free-run mode
AFC Gain
1
Select horizontal first loop gain
Horizontal Phase
3
Align sync to flyback phase
IF AGC SW
1
Disable IF and RF AGC
AFT Defeat
1
Disable AFT output
RF AGC Delay
6
Align RF AGC threshold
Video SW
1
Select Video Signal (INT/EXT)
PLL Tuning
7
Align IF VCO frequency
Audio Mute
1
Disable audio outputs
APC Det Adjust
6
Align AFT crossover
V Count Down Mode
1
Select vertical countdown mode
Vertical DC
6
Align vertical DC bias
Vertical Kill
1
Disable vertical output
Color Kill
1
Enable Color Killer
Vertical Size
6
Align vertical amplitude
Red Bias
7
Align Red OUT DC level
Green Bias
7
Align Green OUT DC level
Blue Bias
7
Align Blue OUT DC level
Blanking Defeat
1
Disable RGB output blanking
Red Drive
6
Align Red OUT AC level
Drive Test
1
Enable drive DAC test mode
Blue Drive
6
Align Blue OUT AC level
Color Difference Mode Enable
1
Enable color difference mode
Brightness Control
7
Customer brightness control
Contrast Test
1
Enable Contrast DAC test mode
Contrast Control
7
Customer Contrast control
Trap & Delay-SW
1
Select luma filter mode
Auto Flesh Enable
1
Enable autoflesh function
Black Stretch Defeat
1
Disable black stretch
Sharpness Control
5
Customer sharpness control
Tint Test
1
Enable tint DAC test mode
Tint Control
7
Customer tint control
Color Test
1
Enable color DAC test mode
Color Control
7
Customer color control
Vertical Test
3
Select vertical DAC test modes
Video Level
3
Align IF video level
FM Level
5
Align WBA output level
BNI Enable
1
Enable black noise inverter
Audio SW
1
Select Audio Signal (INT/EXT)
Volume Control
6
Customer volume control
No. 5844-6/27
LA76070
LA76070 BUS: Control Register Truth Table
Control register truth table
Register name
0 HEX
1 HEX
Test Enable
Test Disable
Audio Mute
Active
Mute
Video Mute
Active
Mute
Sync active
Sync Killed
T Enable
Sync Kill
Slow
Fast
IF AGC SW
AFC Gain
AGC active
AGC Defeat
AFT Defeat
AFT active
AFT Defeat
BNI Enable
BNI active
BNI Defeat
Count Down Mode
Standard
Non-Stand
Vertical Kill
Vrt active
Vrt Killed
F0 Select
3.58 trap
8.00 APF
Auto Flesh Enable
AF Off
AF On
Overload Enable
Ovld Off
Ovld On
Tint DAC Test
Normal
Test Mode
Color DAC Test
Normal
Test Mode
Contrast DAC Test
Normal
Test Mode
Drive DAC Test
Normal
Test Mode
Blk Str On
Blk Str Off
Black Stretch Defeat
Blanking Defeat
Color Diff Mode Enable
Vertical Test
Blanking
No Blank
RGB Mode
C Diff Mode
Normal
Ver Size Test
No. 5844-7/27
LA76070
LA76070 Bit Map (‘96.08.01)
IC address: BAH (101111010)
Sub address
MSB
DATA
LSB
D0....D7
DA0
DA1
DA2
DA3
DA4
DA5
DA6
DA7
$00
*
*
*
*
T_Enable
*
Vid_Mute
Sync_Kill
0
1
0
*
*
*
*
AFC Gain
H_Phase
IFAGC SW
AFT DEF
(tr2)
0
0
$03
VIDEO SW
(tr3)
0
1
$04
*
Aud_Mute
(tr0)
$01
(tr1)
$02
0
(tr4)
$05
0
$06
Ver_kill
Col_kill
(tr6)
0
0
$07
*
$08
0
0
1
0
0
(tr11)
0
$0C
C_Diff
(tr12)
0
$0D
Cot_Test
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
G_Bias
0
0
0
B_Bias
0
0
0
Ver_Size
0
0
BLK_DEF
Drv_Test
0
R_Bias
0
$0B
0
Ver_dc
*
(tr10)
0
APC DET ADJUST
1
0
(tr9)
$0A
0
*
(tr8)
$09
1
*
(tr5)
(tr7)
0
PLL TUNING
1
V CD MODE
1
RF_AGC_Delay
0
R_Drive
1
1
1
1
B_Drive
1
1
1
1
Bright
1
0
0
0
Contrast
(tr13)
0
1
0
$0E
Trap & D_SW
A Fresh
Black ST
(tr14)
0
0
0
$0F
Tint_Test
0
0
Sharpness
1
0
Tint
(tr15)
0
$10
Col_Test
1
0
0
0
(tr16)
0
1
0
0
0
$11
*
*
*
*
*
Color
(tr17)
0
V_test
0
$12
VIDEO LEVEL
(tr18)
1
0
$13
N/I SW
AUDIO SW
(tr19)
0
0
0
0
0
0
0
0
0
0
FM LEVEL
0
1
0
VOLUME
0
0
0
No. 5844-8/27
LA76070
Measurement Conditions at Ta = 25°C, VCC = V4 = V26 = 7.6 V, ICC = I21 = 19 mA
Parameter
Symbol
Measurement
point
Input signal
Measurement method
Bus conditions
[Circuit Voltages and Currents]
Horizontal power supply voltage
HVCC
21
IF power supply current (pin 4)
I4
(IFICC)
4
Video/vertical power supply current
(pin 26)
I26
(DEFICC)
26
No signal
Apply a 19mA current to pin 21 and
measure the pin 21 voltage at that time
Initial conditions
Apply a voltage of 7.6 V to pin 4 and
measure (in mA) the DC current that flows into the IC.
(Apply 5 V to the IF AGC.)
Initial conditions
Apply a voltage of 7.6 V to pin 26 and
measure (in mA) the DC current that flows into the IC
Initial conditions
No. 5844-9/27
LA76070
VIF Block Input Signals and Measurement Conditions
1. All input signals are applied to PIF IN (pin 10) as shown in the measurement circuit diagrams.
2. The input signal voltage values are all the value of VIF IN (pin 10) as shown in the measurement circuit diagrams.
3. The table below lists the input signals and their levels.
Input signal
Waveform
Condition
SG1
45.75 MHz
SG2
42.17 MHz
SG3
41.25 MHz
SG4
Variable frequency
45.75 MHz
87.5 % video modulation
SG5
10-step staircase waveform
(Subcarrier: 3.58 MHz)
45.75 MHz
87.5 % video modulation
Sweep signal
SG6
(APL: 50 IRE
Sweep signal level: 40 IRE)
45.75 MHz
SG7
87.5 % video modulation
Flat field signal
4. Perform the following D/A converter adjustments in the order listed before testing.
Item
Measurement point
Input signal
Adjustment
APC DAC
13
No signal, IF.AGC.DEF = 1
Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible
PLL DAC
13
SG1, 93 dBµ
Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible
Video
45
SG7, 93 dBµ
Set up the DAC value so that the pin 45 output level is as close to 2.0 V p-p as
possible
No. 5844-10/27
LA76070
Measurement
Input signal
point
Parameter
Symbol
Measurement procedure
Bus conditions
AFT output voltage with no signal
VAFTn
13
No signal
Measure the pin 13 DC voltage when
IF.AGC. DEF is "1"
After performing the adjustments
described in section 4
Video output voltage with no signal
VOn
45
No signal
Measure the pin 45 DC voltage when
IF.AGC. DEF is "1"
After performing the adjustments
described in section 4
After performing the adjustments
described in section 4
[VIF Block]
fPU, fPL
45
SG4
93 dBµ
Connect an oscilloscope to pin 45 and modify
the SG4 signal to be a frequency above 45.75
MHz so that the PLL circuit becomes unlocked.
(Beating will occur in this state.) Gradually
lower the SG4 frequency and measure the
frequency at which the PLL circuit locks.
Similarly, modify the frequency to a value
below 45.75 MHz so that the PLL circuit
becomes unlocked. Gradually raise the SG4
frequency and measure the frequency at which
the PLL circuit locks.
Maximum RF AGC voltage
VRFH
6
SG1
91 dBµ
Set the RF AGC DAC to 0 and measure the pin After performing the adjustments
6 DC voltage
described in section 4
Minimum RF AGC voltage
VRFL
6
SG1
91 dBµ
Set the RF AGC DAC to 63 and measure the
pin 6 DC voltage
After performing the adjustments
described in section 4
RF AGC Delay Pt
(@DAC = 0)
RFAGC0
6
SG1
Set the RF AGC DAC to 0 and determine the
input level such that the pin 6 DC voltage
becomes 3.8 V ±0.5 V
After performing the adjustments
described in section 4
RF AGC Delay Pt
(@DAC = 63)
RFAGC63
6
SG1
Set the RF AGC DAC to 63 and determine the
input level such that the pin 4 DC voltage
becomes 3.8 V ±0.5 V
After performing the adjustments
described in section 4
Maximum AFT output voltage
VAFTH
13
SG4
93 dBµ
Set the SG4 signal frequency to 44.75 MHz
and input that signal. Measure the pin 13 DC
voltage at that time.
After performing the adjustments
described in section 4
Minimum AFT output voltage
VAFTL
13
SG4
93 dBµz
Set the SG4 signal frequency to 46.75 MHz
and input that signal. Measure the pin 13 DC
voltage at that time.
After performing the adjustments
described in section 4
AFT detection sensitivity
VAFTS
13
SG4
93 dBµz
Modify the SG4 frequency to determine the
frequency deviation (∆f) such that the pin
13 DC voltage changes from 2.5 V to 5.0 V.
VAFTS = 2500/∆f [mV/kHz]
After performing the adjustments
described in section 4
VO
45
SG7
93 dBµ
Observe pin 45 with an oscilloscope and
measure the p-p value of the waveform
After performing the adjustments
described in section 4
VOtip
45
SG1
93 dBµ
Measure the pin 45 DC voltage
After performing the adjustments
described in section 4
APC pull-in range (U), (L)
Video output amplitude
Synchronization signal tip level
Input sensitivity
Vi
45
SG7
Observe pin 45 with an oscilloscope and measure
the peak-to-peak value of the waveform. Next,
gradually lower the input level to determine the input After performing the adjustments
described in section 4
level such that the output becomes –3 dB below the
video signal amplitude VO.
Video-to-sync ratio (@ 100 dBµ)
V/S
45
SG7
100 dBµ
Observe pin 45 with an oscilloscope and
determine the value of the Vy/Vs ratio by
After performing the adjustments
measuring the peak-to-peak value of the sync
described in section 4
waveform (Vs) and the peak-to-peak value of the
luminance signal (Vy).
Differential gain
DG
45
SG5
93 dBµ
Measure pin 45 with a vectorscope
After performing the adjustments
described in section 4
Differential phase
DP
45
SG5
93 dBµ
Measure pin 45 with a vectorscope
After performing the adjustments
described in section 4
SG1
93 dBµ
Pass the noise voltage that occurs on pin
45 through a 10 kHz to 4 MHz bandpass filter,
measure that voltage (Vsn) with an rms
voltmeter. Use that value to calculate 20 × log
(1.43/Vsn).
After performing the adjustments
described in section 4
SG1
SG2
SG3
Input SG1 at 93 dBµ and measure the pin
12 DC voltage (V12).Mix three signals: SG1 at
87 dBµ, SG2 at 82 dBµ, and SG3 at 63 dBµ,
and input that signal to VIF IN. Now, apply the
V12 voltage to pin 12 using an external power
supply. Measure the difference between the
3.58 MHz component and the 920 kHz
component with a spectrum analyzer.
After performing the adjustments
described in section 4
Video signal-to-noise ratio
920 kHz beat level
S/N
I920
45
45
No. 5844-11/27
LA76070
Video Switch Block - Input Signals and Measurement Conditions
1. Unless otherwise indicated, these measurements are to be performed with no signal applied to PIF IN (pin 10) and
with the D/A converter IF.ACG.SW set to "1".
2. The table below lists the input signals and their labels.
Input signal
Waveform
Condition
10-step staircase waveform
SG8
1 V p-p
4.2 MHz
SG9
1 Vp-p
Parameter
Symbol
Measurement
Input signal
point
Measurement procedure
Bus conditions
[VIF Block]
External video gain
External video sync signal tip
voltage
External video crosstalk
Internal video output level
AUXG
AUXS
AUXC
INT0
Pin 1
SG8
Observe pin 42 with an oscilloscope, measure
the peak-to-peak value of the waveform, and
perform the following calculation.
AUXG = 20 × log (Vp-p) [dB]
VIDEO.SW = "1"
42
Pin 1
SG8
Observe pin 42 with an oscilloscope and
measure the synchronizing signal tip voltage
in the waveform.
Determine the voltage difference between this
measured value and synchronizing signal tip
level (VOtip) measured in the VIF block.
VIDEO.SW = "1"
42
Pin 1
SG8
Measure the 4.2 MHz component in the pin 42
signal with a spectrum analyzer.Convert this
measurement to a V peak-to-peak value and
perform the following calculation.
AUXG = 20 × log (1.4/Vp-p) [dB]
VIDEO.SW = "0"
42
42
Observe pin 45 with an oscilloscope and
Pin 10
measure the peak-to-peak value of the
SG7
waveform. Determine the difference between
(VIF block)
this measured value and the video output
93 dBµ
amplitude (VO) measured in the VIF block.
After performing the adjustments
described in section 4
IF. AGC. SW = "0"
VIDEO. SW = "0"
No. 5844-12/27
LA76070
SIF Block (FM Block) - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. Bus control condition: IF.AGC.DEF = 1
2. SW: IF1 = off
3. Apply the input signal to pin 49 and use a 4.5 MHz carrier signal.
Parameter
FM detector output voltage
FM limiting sensitivity
FM detector output bandwidth
FM detector output total harmonic
distortion
AM rejection ratio
SIF signal-to-noise ratio
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions
SOADJ
7
Adjust the DAC (FM.LEVEL) so that the pin 7
90 dBµ,
FM detector output 1kHz component is as
fm = 1 kHz,
close to 474 mV rms as possible, and
FM = ±25 kHz measure the output at that time in mV rms.
Record this measurement as SV1.
SLS
7
Determine the input level (in dBµ) such that
fm = 1 kHz,
the pin 7 FM detector output 1kHz component
FM = ±25 kHz
is –3 dB down from the SV1 value
FM.LEVEL = adjusted value
SF
7
Determine the modulation frequency
90 dBµ,
bandwidth (Hz) that is –3 dB or higher relative
FM = ±25 kHz
to the pin 7 FM detector output SV1 value
FM.LEVEL = adjusted value
STHD
7
90 dBµ,
Determine the total harmonic distortion in the
fm = 1 kHz,
pin 7 FM detector output 1kHz component
FM = ±25 kHz
FM.LEVEL = adjusted value
SAMR
SSN
7
7
90 dBµ,
fm = 1 kHz,
AM = 30%
Measure the pin 7 FM detector output 1kHz
component (in mV rms).
Record this measured value as SV2 and
perform the following calculation.
SAMR = 20 × log (SV1/SV2) [dB]
FM.LEVEL = adjusted value
90 dBµ,
CW
Set SW1:IF1 to the "ON"
Measure the pin 7 noise level (in mV rms).
Record this measured value as SV3 and
perform the following calculation.
SSN = 20 × log (SV1/SV3) [dB]
FM.LEVEL = adjusted value
Measurement procedure
Bus conditions
Audio Block - Input Signals and Test Conditions
Parameter
Maximum gain
Variability range
Frequency characteristics
Muting
Total harmonic distortion
Signal-to-noise ratio
Measurement
point
Input signal
51
1 kHz, CW
400m Vrms
Measure the output pin 1kHz component
(V1: mV rms) and perform the following
calculation.
AGMAX = 20 × log (V1/400) [dB]
VOLUME = "111111"
AUDIO.MUTE = "0"
51
1 kHz, CW
400m Vrms
Measure the output pin 1kHz component
(V2: mV rms) and perform the following
calculation.
AGMAX = 20 × log (V1/V2) [dB]
VOLUME = "000001"
AUDIO.MUTE = "0"
51
20 kHz, CW
400m Vrms
Measure the output pin 20kHz component
(V3: mV rms) and perform the following
calculation.
AF = 20 × log (V3/V1) [dB]
VOLUME = "111111"
AUDIO.MUTE = "0"
AMUTE
51
20 kHz, CW
400m Vrms
Measure the output pin 20kHz component
(V4: mV rms) and perform the following
calculation.
AMUTE = 20 × log (V3/V4) [dB]
VOLUME = "000000"
AUDIO.MUTE = "0"
ATHD
51
1 kHz, CW
400m Vrms
Determine the total harmonic distortion in
output pin 1kHz component
VOLUME = "111111"
AUDIO.MUTE = "0"
Measure the noise level (DIN.AUDIO) on
the output pin (V5: mV rms) and perform the
following calculation.
ASN = 20 × log (V1/V5) [dB]
VOLUME = "111111"
AUDIO.MUTE = "0"
Symbol
AGMAX
ARANGE
AF
ASN
51
No signal
No. 5844-13/27
LA76070
Chrominance Block - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. VIF and SIF blocks: No signal
2. Deflection block: Input a horizontal and vertical composite synchronizing signal, and assure that the deflection block
is locked to the synchronizing signal. (Refer to the “Deflection Block - Input Signals and Measurement Conditions”
section.)
3. Bus control conditions: All conditions set to the initial conditions unless otherwise specified.
4. Y input: No signal
5. C input: The C1IN input (pin 40) must be used.
6. The following describes the method for calculating the demodulation angle.
B-Y axis angle = tan-1 (B (0)/B (270) + 270°
R-Y axis angle = tan-1 (R (180)/R (90) + 90°
G-Y axis angle = tan-1 (G (270)/G (180) + 180°
R-Y axis
B-Y axis
G-Y axis
7. The following describes the method for calculating the AF angle.
BR ... The ratio between the B-Y and R-Y demodulator outputs.
θ ...... ANGBR: The B-Y/R-Y demodulation angle
AFXXX = tan-1
[R-Y/B-YSin× θBR-Cosθ ]
8. Attach a TV crystal externally to pin 15.
No. 5844-14/27
LA76070
Chrominance Input Signals
C-1
X IRE signal (L-X)
C-2
C-3
(However, if a frequency is specified that frequency must be used.)
C-4
C-5
No. 5844-15/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus and other conditions
[Chroma Block]
Bout
ACC amplitude characteristic 1
ACCM1
ACC amplitude characteristic 2
ACCM2
30
C-1
0 dB
+6 dB
Measure the output amplitudes when the
chrominance signal input is 0 dB and when
that input is +6 dB and calculate the ratio.
ACCM1 = 20 × log (+6 dBdata/0dBdata)
C-1
–14 dB
Measure the output amplitude when the
chrominance signal input is –14 dB and
calculate the ratio.
ACCM2 = 20 × log (–14 dBdata/0dBdata)
Bout
30
YIN: L77
C-1:
No signal
B-Y/Y amplitude ratio
CLRBY
Measure the Y output level
(Record this measurement as V1)
C-2
Next, input a signal to CIN, and (with YIN a
sync-only signal) measure the output level.
(Record this measurement as V2)
Calculate CLRBY from the following formula.
CLRBY = 100 × (V2/V1) + 15%
TR24:
Saturation
01111111
Saturation
01000000
30
Color control characteristic 1
CLRMN
30
C-3
Measure V1: the output amplitude when the
color control is maximum, and V2: the output
amplitude when the color control is nominal.
Calculate CLRMN as V1/V2.
Color control characteristic 2
CLRMN
30
C-3
Measure V3: the output amplitude when the
color control is minimum. Calculate CLRMM
as CLRMN = 20 × log (V1/V3).
TR28:
Saturation
00000000
TR24:
Saturation
01011010
Saturation
00100110
Color control sensitivity
CLRSE
30
C-3
Measure V4: the output amplitude when the
color control is 90, and V5: the output amplitude
when the color control is 38. Calculate CLRSE
from the following formula.
CLRSE = 100 × (V4 – V5)/(V2 × 52)
Tint center
TINCEN
30
C-1
Measure all sections of the output waveform
and calculate the B-Y axis angle
TR23: Tint
00111111
Tint control maximum
TINMAX
30
C-1
Measure all sections of the output waveform,
calculate the B-Y axis angle, and calculate
TINMAX from the following formula.
TINMAX = <the B-Y axis angle> – TINCEN
TR23: Tint
01111111
Tint control minimum
TINMIN
30
C-1
Measure all sections of the output waveform,
calculate the B-Y axis angle, and calculate
TINMIN from the following formula.
TINMIN = <the B-Y axis angle> – TINCEN
TR23: Tint
00000000
C-1
Measure A1: the angle when the tint control is 85,
TR23: Tint
and A2: the angle when the tint control is 42,
01010101
and calculate TINSE from the following formula.
00101010
TINSE = (A1 – A2) /43
C-3
Measure Vb: the BOUT output amplitude,
and Vr: the ROUT output amplitude.
Determine RB = Vr/Vb.
TR24:
Saturation
01000000
C-3
Measure Vg: the GOUT output amplitude and
determine GB = Vg/Vb
TR24:
Saturation
01000000
Tint control sensitivity
Demodulation output ratio
R-Y/B-Y
TINSE
30
30
RB
28
Demodulation output ratio
G-Y/B-Y
GB
29
Continued on next page.
No. 5844-16/27
LA76070
Continued from preceding page.
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
C-1
Measure the BOUT and ROUT output levels,
calculate the angles of the B-Y and R-Y axes,
and determine ANGBR as
<the R-Y angle> – <the B-Y angle>.
Demodulation angle B-Y/R-Y
ANGBR
30
28
Demodulation angle B-Y/G-Y
ANGBG
29
C-1
Measure the GOUT output level, calculate the
angle of the G-Y axis, and determine ANGBG
as <the G-Y angle> – <the B-Y angle>
KILL
30
C-3
Gradually lower the input signal level, and
measure the input signal level at the point the
output level falls under 150 mV p-p
CVCOF
15
CIN
No signal
Measure the oscillator frequency f, and
determine CVCOF from the following formula.
CVCOF = f – 3579545 (Hz)
Killer operating point
Chrominance VCO free-running
frequency
Chrominance pull-in range (+)
Chrominance pull-in range (–)
PULIN +
PULIN –
30
30
C–1
Gradually lower the input signal subcarrier
frequency starting from 3.57545 MHz +
2000 Hz, and measure the frequency when
the output waveform locks
C–1
Gradually raise the input signal subcarrier
frequency starting from 3.57545 MHz –
2000 Hz, and measure the frequency when the
output waveform locks
C–4
With Auto Flesh = 0, measure the level that
corresponds to 73° for the BOUT and ROUT
output waveforms, and calculate the angle
AF073A.
With Auto Flesh = 1, determine the angle
AF073B in the same way.
Calculate AF073 from the following formula.
AF073 = AF073B – AF073A
TR22:
Auto flesh:
0*******
TR22:
Auto flesh:
1*******
C–4
With Auto Flesh = 0, measure the level that
corresponds to 118° for the BOUT and ROUT
output waveforms, and calculate the angle
AF118A.
With Auto Flesh = 1, determine the angle
AF118B in the same way.
Calculate AF118 from the following formula.
AF118 = AF118B – AF118A
TR22:
Auto flesh:
0*******
TR22:
Auto flesh:
1*******
C–4
With Auto Flesh = 0, measure the level that
corresponds to 163° for the BOUT and ROUT
output waveforms, and calculate the angle
AF163A.
With Auto Flesh = 1, determine the angle
AF163B in the same way.
Calculate AF163 from the following formula.
AF163 = AF163B – AF163A
TR22:
Auto flesh:
0*******
TR22:
Auto flesh:
1*******
30
Auto flesh characteristic 73°
AF073
28
30
Auto flesh characteristic 118°
AF118
28
30
Auto flesh characteristic 163°
AF163
28
Bus and other conditions
No. 5844-17/27
LA76070
Video Block - Input Signals and Measurement Conditions
• C IN input signal * chrominance burst signal: 40 IRE
• Y IN input signal 100 IRE: 714 mV
*0 IRE signal (L-0): Standard NTSC synchronizing signal
XIRE signal (L-X)
CW signal (L-CW)
Black stretch 0 IRE signal (L-BK)
• R/G/B input signal
RGB input signal 1 (O-1)
RGB input signal 2 (O-2)
No. 5844-18/27
LA76070
Symbol
Measurement
point
Input signal
Overall video gain
(contrast: maximum)
CONT127
30
L–50
Measure the output signal 50 IRE amplitude
(CNTHB V p-p) and calculate CONT127 as
20 × log (CNTHB/0.357).
Contrast max
1111111
Contrast adjustment
characteristics
(normal/maximum)
CONT63
30
L–50
Measure the output signal 50 IRE amplitude
(CNTCB V p-p) and calculate CONT63 as
20 × log (CNTCB/CNTHB).
Contrast center
0111111
Contrast adjustment
characteristics
(minimum/maximum)
CONT0
30
L–50
Measure the output signal 50 IRE amplitude
(CNTLB V p-p) and calculate CONT0 as
20 × log (CNTLB/CNTHB).
Contrast min
0000000
L–0
Measure the output signal 0 IRE DC level
(BRTPL V)
Brightness min
0000000
Contrast max
1111111
Measure the output signal 0 IRE DC level
(DRVPH V) and the 100 IRE amplitude (DRVH
V p-p), and calculate ClampG as
100 × (1 + (DRVPH - BRTPL)/DRVH).
Brightness min
0000000
Contrast max
1111111
Parameter
Measurement procedure
Bus conditions and
input signals
[Video Block]
Video frequency characteristics
30
DC propagation
ClampG
30
L–100
Y delay
YDLY
30
Measure the output signal 0 IRE DC level at
point A when the black stretch function is
BKST defeat on (1)
defeated (off). Record this value as BKST1 (V).
Maximum black stretching gain
BKSTmax
30
L–BK
Measure the output signal 0 IRE DC level at
point A when the black stretch is enabled (on).
Record this value as BKST2 (V).
BKST defeat off (0)
Calculate BKSTmax from the following formula.
BKSTmax = 2 × 50 × (BKST1 – BKST2)/ CNTHB
L–CW
30
Sharpness (peaking)
L–CW
L–CW
Horizontal/vertical blanking
output level
RGBBLK
30
L–100
Measure the output signal blanking period DC
level. Record that value as RGBBLK V.
No. 5844-19/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
FSTH
30
L–0
O–2
Apply a voltage to pin 36 and determine the pin
36 voltage when the output signal switches to
Pin 35: Apply O-2
the OSD signal
L–50
Measure the output signal 50 IRE amplitude
(CNTCR V p-p)
L–0
O–2
Measure the OSD output amplitude
(OSDHR V p-p)
L–50
Measure the output signal 50 IRE amplitude
(CNTCG V p-p)
L–0
O–2
Measure the OSD output amplitude
(OSDHG V p-p)
L–50
Measure the output signal 50 IRE amplitude
(CNTCB V p-p)
L–0
O–2
Measure the OSD output amplitude
(OSDHB V p-p)
L–0
O–1
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
section in the input signal O-1) in the output
Pin 33: Apply O-1
signal and record those values as RGBLR and
RGBHR V p-p, respectively
Measurement procedure
Bus conditions and
input signals
[OSD Block]
OSD fast switch threshold
Red RGB output level
ROSDH
28
Pin 36: 2.0 V
Pin 33: Apply O-2
Calculate ROSDH as 50 × (OSDHR/CNTCR)
Green RGB output level
GOSDH
29
Pin 36: 2.0 V
Pin 34: Apply O-2
Calculate GOSDH as 50 × (OSDHG/CNTCG)
Blue RGB output level
BOSDH
30
Pin 36: 2.0 V
Pin 35: Apply O-2
Calculate BOSDH as 50 × (OSDHB/CNTCB)
28
Analog OSD R output level
Gain matching
RRGB
Calculate RRGB as RGBLR/CNTCR
Linearity
LRRGB
Calculate LRRGB as 100 × (RGBLR/RGBHR)
29
Analog OSD G output level
L–0
O–1
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
section in the input signal O-1) in the output
Pin 34: Apply O-1
signal and record those values as RGBLG and
RGBHG V p-p, respectively
Gain matching
GRGB
Calculate GRGB as RGBLG/CNTCG
Linearity
LGRGB
Calculate LGRGB as 100 × (RGBLG/RGBHG)
30
Analog OSD B output level
L–0
O–1
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
section in the input signal O-1) in the output
Pin 35: Apply O-1
signal and record those values as RGBLB and
RGBHB V p-p, respectively
Gain matching
BRGB
Calculate BRGB as RGBLB/CNTCB
Linearity
LBRGB
Calculate LBRGB as 100 × (RGBLB/RGBHB)
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions and
input signals
[RGB Output Block] (Cutoff and Drive Blocks)
28
Brightness control (normal)
BRT63
29
30
(max)
(min)
BRT127
BRT0
L–0
Measure the output signal 0 IRE DC levels for
the R output (28), G output (29), and B output
(30). Record these values as BRTPCR,
BRTPCG, and BRTPCB V, respectively.
Contrast max
1111111
Calculate BRT63 as
(BRTPCR + BRTPCG + BRTPCB)/3
Measure the output signal 0 IRE DC levels for
Brightness max
the B output (30). Record this value as BRTPHB. 1111111
30
Calculate BRT127 as
50 × (BRTPHB – BRTPCB)/CNTHB
Measure the output signal 0 IRE DC levels for
Brightness min
the B output (30). Record this value as BRTPLB. 0000000
Calculate BRT0 as
50 × (BRTPLB – BRTPCB)/CNTHB
No. 5844-20/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus and other conditions
[RGB Output Block] (Cutoff and Drive Blocks)
(minimum)
Vbias0
L–50
(maximum)
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B Contrast max
output (pin 30). Record these values as Vbias0 1111111
*(V).Here, * is R, G, and B, respectively.
Vbias127
Bias (cutoff) control
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
Vbias128*(V). Here, * is R, G, and B,
respectively.
R bias max
1111111
G bias max
1111111
B bias max
1111111
Contrast max
1111111
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
BAS80*.
Here, * is R, G, and B, respectively.
R bias:
1010000
G bias:
1010000
B bias:
1010000
Contrast max
1111111
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
BAS48*(V).
Here, * is R, G, and B, respectively.
R bias:
0110000
G bias:
0110000
B bias:
0110000
Contrast max
1111111
28
29
30
Bias (cutoff) control resolution
Vbiassns
Vbiassns* = (BAS80* – BAS48*)/32
Drive adjustment: Maximum output RGBout127
Measure the output signal 100 IRE amplitudes
for the R output (pin 28), G output (pin 29), and
B output (pin 30). Record these values as
DRVH* (V p-p).
Here, * is R, G, and B, respectively.
28
Output attenuation
RGBout0
29
30
L–100
Contrast max
1111111
Brightness min
0000000
Contrast max
1111111
Measure the output signal 100 IRE amplitudes
Brightness min
for the R output (pin 28), G output (pin 29), and
0000000
B output (pin 30). Record these values as
R drive min
DRVL* (V p-p).
0000000
Here, * is R, G, and B, respectively.
B drive min
0000000
RGBout0* = 20 × log (DRVH*/DRVL*)
No. 5844-21/27
LA76070
Deflection Block - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. VIF and SIF blocks: No signal
2. C input: No signal
3. SYNC input: Horizontal and vertical composite synchronizing signal (40 IRE and other conditions, such as timing,
must conform to the FCC broadcast standards.)
Caution: The burst and chrominance signals must not be below the pedestal level.
4. Bus control conditions: All conditions set to the initial conditions unless otherwise specified.
5. The delay between the rise of the horizontal output (the pin 23 output) and the rise of the F.B.P IN (the pin 24 input)
must be 9 µs.
6. Unless otherwise specified, pin 25 (the X-ray protection circuit input) must be connected to ground.
Caution:
Perform the following operation if horizontal pulse output has stopped.
1. The bus data T_ENABLE bit must be temporarily set to 0 and then set to 1.
(If the X-ray protection circuit operates, an IC internal latch circuit will be set. To reset that latch circuit, the
T_ENABLE bit must be temporarily set to 0, even if there is no horizontal output signal being output.)
Notes on Video Muting
If horizontal pulse output has stopped, perform the operation described in item 1. above and then set the video mute bit
set to 0.
(This is because the video mute bit is forcibly set to the mute setting when the T_ENABLE bit is set to 0 or when the Xray protection circuit operates. This also applies when power is first applied.)
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
37
SYNC IN:
horizontal and
vertical
synchronizing
signal
Gradually lower the level of the synchronizing
signal input to Y IN (pin 37) and measure the
level of the synchronizing signal at the point
synchronization is lost
Bus conditions
[Deflection Block]
Sync separator circuit sensitivity
Horizontal free-running
frequency deviation
Horizontal pull-in range
Horizontal pulse output
saturation voltage
Ssync
∆fH
fH PULL
V Hsat
23
SYNC IN:
No signal
Connect a frequency counter to the pin 23
output (Hout) and measure the horizontal freerunning frequency.
Calculate the deviation from the following formula.
∆fH = <measured value> – 15.734 kHz
37
SYNC IN:
horizontal and
vertical
synchronizing
signal
Monitor the horizontal synchronizing signal input
to Y IN (pin 37) and the pin 23 output (Hout),
and measure the pull-in range by modifying the
horizontal synchronizing signal frequency
23
SYNC IN:
horizontal and
Measure the voltage during the low-level period
vertical
in the pin 23 horizontal output pulse
synchronizing
signal
No. 5844-22/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the Y
IN horizontal synchronizing signal
23
Horizontal output pulse phase
HPHCEN
37
Horizontal position adjustment
range
Horizontal position adjustment
maximum deviation
X-ray protection circuit
operating voltage
23
HPHrange
37
23
HPHstep
37
23
VXRAY
25
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the Y
IN horizontal synchronizing signal when
HPHASE is set to 0 and when it is set to 7,
and calculate the difference between those
measurements and HPHCEN
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the
SYNC IN horizontal synchronizing signal as
HPHASE is set to each value from 0 to 7, and
calculate the amount of the change at each step.
Find the step size with the largest change.
Hphase:
000
Hphase:
111
Hphase:
000
to
Hphase:
111
Connect a DC voltage source to pin 25 and
gradually increase the voltage starting at 0 V.
Measure the pin 25 DC voltage at the point that
the pin 23 horizontal pulse output stops.
No. 5844-23/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions
[Vertical screen Size Adjustment]
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Vertical ramp output amplitude
@32
Vsize32
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
Calculate Vsize32 from the following formula.
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Calculate Vsize32 from the following formula.
Vertical ramp output amplitude
@0
Vsize0
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
VSIZE:
0000000
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Vertical ramp output amplitude
@63
Vsize63
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
Calculate Vsize32 from the following formula.
VSIZE:
1111111
No. 5844-24/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions
[Vertical screen Position Adjustment]
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @32
Vdc32
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @0
Vdc0
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
VDC: 0000000
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @63
Vdc63
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
VDC: 1111111
No. 5844-25/27
* For adjusting the crystal oscillator
characteristic
LA76070
No. 5844-26/27
LA76070
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 July, 1999. Specifications and information herein are subject to
change without notice.
PS No. 5844-27/27