Digital Multistandard Colour
Decoder, Square Pixel
(DMSD-SQP)
Product specification
File under Integrated Circuits, IC22
August 1996
Page 2
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
CONTENTS
1FEATURES
2GENERAL DESCRIPTION
3QUICK REFERENCE DATA
4ORDERING INFORMATION
5BLOCK DIAGRAM
6PINNING
7FUNCTIONAL DESCRIPTION
8LIMITING VALUES
9CHARACTERISTICS
10I2C-BUS FORMAT
11PROGRAMMING EXAMPLE
12PACKAGE OUTLINE
13SOLDERING
14DEFINITIONS
15LIFE SUPPORT APPLICATIONS
16PURCHASE OF PHILIPS I2C COMPONENTS
SAA7191B
August 19962
Page 3
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
1FEATURES
• Separate 8-bit luminance (Y or CVBS) and 8-bit
chrominance inputs (CVBS or C) from CVBS, Y/C,
S-Video (S-VHS or Hi8) sources
• Luminance and chrominance signal processing for
standards PAL-B/G, NTSC-M, SECAM
• Horizontal and vertical sync detection for all standards
• Real-time control output RTCO to be used for
frequency-locked digital video encoder (SAA7199B).
RTCO contains serialized information about actual clock
frequency, subcarrier frequency and PAL/SECAM
sequence.
2
• Controls via the I
• User programmable aperture correction (horizontal
peaking)
• Compatible with memory-based features (line-locked
clock)
• Cross-colour reduction by chrominance comb-filtering
(NTSC) or by special cross colour cancellation
(SECAM)
• 8-bit quantization of input signals
• 768/640 active samples per line equals 50/60 Hz (SQP)
• The YUV bus supports data rates of 780 × fH equal to
12.2727 MHz for 60 Hz (NTSC-M) and 944 × fH equal to
14.75 MHz for 50 Hz (PAL-B/G, SECAM) in 4 : 1 : 1 or
4:2:2 formats (via the I2C-bus)
• One crystal oscillator of 26.8 MHz
C-bus
SAA7191B
2GENERAL DESCRIPTION
The SAA7191B is a digital multistandard colour decoder
suitable for 8-bit CVBS input signals or for 8-bit luminance
and 8-bit chrominance input signals (Y/C).
The SAA7191B is down-compatible with SAA7191. The
SAA7191B has additional outputs RTCO, GPSW0 and
ODD. These new outputs are in high-impedance state
when NFEN-bit = 0.
3QUICK REFERENCE DATA
SYMBOLPARAMETERMIN.TYP.MAX.UNIT
V
DD
I
DD
V
IL
V
OL
T
amb
positive supply voltage (pins 5, 18, 28, 37 and 52)4.555.5V
total supply current (pins 5, 18, 28, 37 and 52)100250mA
input levelsTTL-compatible
output levelsTTL-compatible
operating ambient temperature0-70°C
4ORDERING INFORMATION
EXTENDED TYPE
NUMBER
PINSPIN POSITIONMATERIALCODE
PACKAGE
SAA7191B68PLCCplasticSOT188-2
August 19963
Page 4
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August 19964
handbook, full pagewidth
+5 V
V to V
DD1DD4
5, 18. 28, 5219, 38, 51, 67
V to V
SS1SS4
PLIN
66
RTCO
68
internally
connected
441, 2
test pins
SAA7191B
5BLOCK DIAGRAM
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
Philips SemiconductorsProduct specification
CVBS7 to
CVBS0
CHR7 to
CHR0
GPSW0
GPSW1
GPSW2
SDA
IICSA
RESN
14 to 17
20 to 23
6 to 13
65
24
25
40
41
INPUT
INTERFACE
LUMINANCE
PROCESSOR
PORT AND
STATUS
REGISTER
2
I C-BUS
CONTROL
4329
3
clock
status
2639
HCLHSYVS
CHROMINANCE PROCESSOR
SYNCHRONIZATION
303132
HS
Fig.1 Block diagram.
Fig.1 Block diagram.
HL
36
LFCO
ODD
OUTPUT
INTERFACE
CLOCK
4
CREF27LLC
45 to 50, 53, 54
55 to 62
Y output
(Y7 to Y0)
UV output
(UV7 to UV0)
42
63
64
37
35
33
34
+5 V
HREF
FEON
FEIN
V
DDA
V
SSA
XTAL
XTALI
SAA7191B
MEH435
Page 5
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
6PINNING
SYMBOLPINDESCRIPTION
SP1connected to ground (shift pin for testing)
AP2connected to ground (action pin for testing)
RESN3reset, active LOW
CREF4clock reference, sync from external to ensure in-phase signals on the YUV-bus
V
CVBS420
CVBS521
CVBS622
CVBS723
GPSW124Port 1 output for general purpose (programmable)
GPSW225Port 2 output for general purpose (programmable)
HCL26black level clamp pulse (programmable), e.g. for TDA8708 (ADC)
LLC27line-locked clock input signal (29.5 MHz for 50 Hz system; 24.5454 MHz for 60 Hz system)
V
DD3
HSY29horizontal sync indicator output signal (programmable), e.g. for TDA8708 (ADC)
VS30vertical sync output signal
HS31horizontal sync output signal (programmable)
HL32horizontal lock flag, HIGH = PLL locked
XTAL3326.8 MHz clock output
XTALI3426.8 MHz connection for crystal or external oscillator (TTL compatible squarewave)
V
SSA
LFCO36line frequency control output signal, multiple of horizontal frequency (7.375 MHz/6.136363 MHz)
V
DDA
V
SS2
ODD39odd/even field identification output (odd = HIGH); active only at NFEN-bit = 1
SDA40I
5+5 V supply input 1
chrominance input data bits CHR7 to CHR0
from a Y/C (VHS, Hi8) source in two’s complement format
luminance respectively CVBS lower input data bits CVBS3 to CVBS0
(CVBS with luminance, chrominance and all sync information in two’s complement format)
18+5 V supply input 2
19ground 1 (0 V)
luminance respectively CVBS upper input data bits CVBS7 to CVBS4
(CVBS with luminance, chrominance and all sync information in two’s complement format)
28+5 V supply input 3
35analog ground
37+5 V supply input for analog part
38ground 2 (0 V)
2
C-bus data line
August 19965
Page 6
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
SYMBOLPINDESCRIPTION
SCL41I2C-bus clock line
HREF42horizontal reference output for valid YUV data (for active line 768Y or 640Y samples long)
IICSA43set module address input (LOW = 1000 101X; HIGH = 1000 111X)
i.c.44internally connected
Y745
Y646
Y547
Y448
Y349
Y250
V
SS3
V
DD4
Y153
Y054
UV755
UV656
UV557
UV458
UV359
UV260
UV161
UV062
FEON63output active flag (active LOW when Y and UV data in high-impedance state)
FEIN64fast enable input (active LOW to control fast switching due to YUV data)
GPSW065Port 0 output for general purpose (programmable); active only at NFEN-bit = 1
PLIN66PAL flag (active LOW at inverted line); SECAM flag (LOW equals DR, HIGH equals DB line)
V
SS4
RTCO68real-time control output active at NFEN-bit = 1; Fig.8
Y signal output bits Y7 to Y2 (luminance), part of the digital YUV-bus
51ground 3 (0 V)
52+5 V supply input 4
Y signal output bits Y1 to Y0 (luminance), part of the digital YUV-bus
UV signal output bits UV7 to UV0 (colour-difference), part of the digital YUV-bus
67ground 4 (0 V)
August 19966
Page 7
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
6.1Pin configuration
handbook, full pagewidth
UV6
UV1
UV0
FEON
FEIN
GPSW0
PLIN
V
SS4
RTCO
SP
AP
RESN
UV4
UV5
UV3
UV2
60
61
62
63
64
65
66
67
68
1
2
3
Y0
UV7
544950515253
5556575859
DD4VSS3
V
Y1
SAA7191B
Y2
Y3
Y4
Y5
Y6
Y7
SAA7191B
i.c.
4445464748
IICSA
43
HREF
42
41
SCL
SDA
40
39
ODD
V
38
SS2
V
37
DDA
36
LFCO
V
35
SSA
XTALI
34
XTAL
33
CREF
V
DD1
CHR0
CHR1
CHR2
CHR3
4
5
6
7
8
9
11
10141312
CHR4
CHR5
CHR6
CHR7
15
16212019181725242322
DD2
CVBS0
CVBS1
CVBS2
CVBS3
V
Fig.2 Pin configuration.
V
SS1
CVBS4
CVBS5
CVBS6
CVBS7
GPSW1
26
HCL
GPSW2
32
HL
HS
31
VS
30
HSY
29
V
28
DD3
LLC
27
MEH436
August 19967
Page 8
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
7FUNCTIONAL DESCRIPTION
7.1Chrominance processor
The 8-bit chrominance input signal (CVBS or chrominance
format) passes a bandpass filter to eliminate DC
components and to decimate the sample rate before it is
fed to the two multipliers (quadrature demodulator), Fig.3.
Two subcarrier signals from a local oscillator (0 to 90
degree) are fed to the multiplicator inputs of the multipliers.
The multipliers operate as a quadrature demodulator for all
PAL and NTSC signals; it operates as a frequency
down-mixer for SECAM signals.
The two multiplier output signals are converted to a serial
data stream and applied to three low-pass filter stages,
then to a gain controlled amplifier. A final multiplexed
low-pass filter achieves, together with the preceding
stages, the required bandwidth performance. The signals,
originated from PAL and NTSC, are applied to a
comb-filter. The signals, originated from SECAM, are fed
through a Cloche filter (0 Hz centre frequency), a phase
demodulator and a differentiator to obtain
frequency-demodulated colour-difference signals.The
SECAM signals are fed after de-emphasis to a cross-over
switch, to provide the both serial-transmitted
colour-difference signals. These signals are fed finally to
the output formatter stages and to the output interface.
SAA7191B
August 19968
Page 9
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August 19969
handbook, full pagewidth
CVBS (7-0)
CHR (7-0)
RTCO
68
INPUT
INTERFACE
CHROMINANCE
BANDPASS
HUEC
FISE
SECS
NFEN
QUADRATURE
DEMODULATOR
DISCRETE TIME
OSCILLATOR (DTO1)
AND DIVIDER
LOOP
FILTER
PI1
LOWPASS
FILTER
FISECHRSBYPS
CKTS (4-0)
CHCV (7-0)
CKTO (4-0)
LFIS (1-0)
SECS
GAIN
CONTROLLED
AMPLIFIER
LOOP
FILTER
PI2
BURST GATE
ACCUMULATOR
CODE
LOWPASS
FILTER
CLOCHE
FILTER
PHASE
DEMODULATOR
AND
AMPLITUDE
DETECTOR
QUAM COMB
FILTERS AND
SECAM
RECOMBINATION
SECS
HRMV
OUTPUT
FORMATTER
AND OUTPUT
INTERFACE
OFTS
COLO
OEDY
OEDC
OEHS
42
63
64
UV (7-0)
HREF
FEON
FEIN
Y (7-0)
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
PLIN
66
SAA7191B
PROCESSOR
PLSE(7-0)
SESE(7-0)
FISE
SECS
SEQUENCE
SEQA
DIFFERENTIATOR
SXCR
CHROMINANCE
DE-EMPHASIS
to luminancefrom luminance
Fig.3 Detailed block diagram; continued in Fig.4.
Fig.3(a) Detailed block diagram; continued in Fig.3(b).
SAA7191B
MEH437
Page 10
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August 199610
from input interface
handbook, full pagewidth
to output interface
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
RESN
SCL
SDA
IICSA
SAMPLE RATE
CONVERTER
PREFILTER
SYNC
3
41
40
43
SAA7191B
2
I C-BUS
CONTROL
65,24,25
PREFILTER
PREF
SYNC SLICER
NFEN
LUMINANCE
PHASE DETECTOR
SYNC
CHROMINANCE
TRAP
BYPS
FISE
FINE
HRMV
HCLB (7-0)
SCEN
HCLS (7-0)
OEVS
HSYB (7-0)
OEHS
HSYS (7-0)
FISE
HPHI (7-0)
IDEL (7-0)
COUNTER
2629303132
PHASE DETECTOR
VTRC
FISE
VARIABLE
BANDPASS
BPSS
(1-0)
COARSE
FILTER
PREF
BYPS
HLCK
STTC
VERTICAL
PROCESSOR
39
CORING
CORI (1-0)
MATCHING
AMPLIFIER
LOOP FILTER
HLCK
VTRC
HPLL
FISE
FISE
FIDT
VNOI (1-0)
HLCK
VTRC
FSEL
AUFD
NFEN
FISE
PROGRAMMABLE
DISCRETE TIME
OSCILLATOR
FISE
WEIGHTING
AND
ADDING STAGE
APER
(0-1)
DELAY
(DTO2)
DAC
36
internal clocks
VARIABLE DELAY
COMPENSATION
YDEL
(2-0)
LINE-LOCKED
CLOCK
GENERATOR
CRYSTAL
CLOCK
GENERATOR
4
CREF
27
LLC
33
XTAL
34
XTAL I
SAA7191B
GPSW(2-0)
HS
HCL
Fig.4 Detailed block diagram; continued from Fig.3.
Fig.3(b) Detailed block diagram; continued from Fig.3(a).
VSHSY
HL
ODD
LFCO
MEH438-1
Page 11
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
7.2Luminance processor
The luminance input signal, a digital CVBS format or an
8-bit luminance format (S-VHS, Hi8), is fed through a
sample rate converter to reduce the data rate to
14.75 MHz for PAL and SECAM (12.2727 MHz for NTSC),
Fig.4.
Sample rate is converted by means of a switchable
pre-filter. High frequency components are emphasized to
compensate for loss in the following chrominance trap
filter. This chrominance trap filter (fo= 4.43 MHz or
= 3.58 MHz centre frequency selectable) eliminates
f
o
most of the colour carrier signal, therefore, it must be
by-passed for S-Video (S-VHS and Hi8) signals.
The high frequency components of the luminance signal
can be “peaked” (control for sharpness improvement via
the I2C-bus) in two bandpass filters with selectable transfer
characteristic.
A coring circuit with selectable characteristic improves the
signal once more, this signal is then added to the original
(“unpeaked”) signal. A switchable amplifier achieves a
common DC amplification, because the DC gains are
different in both chrominance trap modes. The improved
luminance signal is fed to the variable delay
compensation.
7.3Processing delay
The delay from input to output is 220 LLC cycles if YDEL
is set to 0. The processing delay will be influenced in future
enhancements.
7.4Synchronization
SAA7191B
Table 1 Clock frequencies in MHz for 50/60 Hz systems
LFCO is required in an external PLL (SAA7197) to
generate the line locked clock frequency.
7.6YUV-bus, digital outputs
The 16-bit YUV-bus transfers digital data from the output
interfaces to a feature box, or to the digital-to-analog
converter (DAC). Outputs are controlled via the I2C-bus in
normal selections, or they are controlled by output enable
chain (FEIN on pin 64, Fig.5). The YUV-bus data rate
equals LLC2 in Table 1. Timing is achieved by marking
each second positive rising edge of the clock LLC in
conjunction with CREF (clock reference).
YUV-bus formats 4:2:2 and 4:1:1
The output signals Y7 to Y0 are the bits of the digital
luminance signal. The output signals UV7 to UV0 are the
bits of the multiplexed colour-difference signals (B−Y) and
(R−Y). The frame in the following tables is the time,
required to transfer a full set of samples. In case of 4 :2:2
format two luminance samples are transmitted in
comparison to one U and one V sample within one frame.
The luminance output signal is fed to the synchronization
stage. Its bandwidth is reduced to 1 MHz in a low-pass
filter. The sync pulses are sliced and fed to the phase
detectors to be compared with the sub-divided clock
frequency.
The resulting output signal is applied to the loop filter to
accumulate all phase deviations. Adjustable output signals
(e. g. HCL and HSY) are generated according to peripheral
requirements (TDA8708A, TDA8709A). The output signals
HS, VS and PLIN are locked to the timing reference signal
HREF (Figures 7 and 8). There is no absolute timing
reference guaranteed between the input signal and the
HREF signal as further improvements to the circuit may
change the total processing delay. It is therefore not
recommended to use them for applications, which ask for
absolute timing accuracy to the input signals.
The loop filter signal drives an oscillator to generate the
line frequency control output signal LFCO.
August 199611
Page 12
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
Table 2 4 : 2 : 2 format
(768 pixels per line for 50 Hz system; 640 pixels
per line for 60 Hz system)
OUTPUTPIXEL BYTE SEQUENCE
Y0 (LSB)
Y1
Y2
Y3
Y4
Y5
Y6
Y7 (MSB)
UV0 (LSB)
UV1
UV2
UV3
UV4
UV5
UV6
UV7(MSB)
Y frame012345
UV frame024
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
SAA7191B
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
Notes
1. Data rate:LLC2
2. Sample frequency:
YLLC2
ULLC4
VLLC4
The quoted frequencies are valid on the YUV-bus.
The time frames are controlled by the HREF signal.
August 199612
Page 13
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
Table 3 4 : 1 : 1 format (768 pixels per line for 50 Hz system and 640 pixels per line for 60 Hz system)
OUTPUTPIXEL BYTE SEQUENCE
Y0 (LSB)
Y1
Y2
Y3
Y4
Y5
Y6
Y7 (MSB)
UV0 (LSB)
UV1
UV2
UV3
UV4
UV5
UV6
UV7 (MSB)
Y frame01234567
UV frame04
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V6
V7
U6
U7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V4
V5
U4
U5
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V2
V3
U2
U3
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V0
V1
U0
U1
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V6
V7
U6
U7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V4
V5
U4
U5
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V2
V3
U2
U3
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0
0
0
0
V0
V1
U0
U1
Notes
1. Data rate:LLC2
sample frequency:
YLLC2
ULLC8
VLLC8
Fast enable is achieved by setting input FEIN to LOW. This
signal is used to control fast switching on the digital
YUV-bus. HIGH on this pin forces the Y and U/V outputs
to a high-impedance state. The signal FEON is LOW when
the Y and U/V outputs are in this high-impedance state
(Fig.5).
The quoted frequencies are valid on the YUV-bus. The
time frames are controlled by the HREF signal.
Table 4 Digital output control
OEDYOEDCFEINY(7:0)UV(7:0)FEON
X
0
0
1
1
X
0
1
0
1
0
1
1
1
X
active
Z
Z
active
active
active
Z
active
Z
active
1
0
1
1
1
August 199613
Page 14
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
LLC
CREF
HREF
t
SU
FEIN
SAA7191B
from 3-stateto 3-state
t
HD
YUV
FEON
t
OH
Fig.5 Timing example of fast enable input FEIN.
t
OS
MEH441-1
August 199614
Page 15
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
LLC
CREF
internal
bus clock
HREF
Byte numbers for pixels:
Y signal
50 Hz
U and V signal
Y signal
60 Hz
U and V signal
U0
U0
start of
active line
0
0
V0
1
V0
1
U2
U2
SAA7191B
2
2
V2
V2
3
3
U4
U4
4
4
V4
V4
5
5
U6
U6
6
6
7
V6
7
V6
handbook, full pagewidth
LLC
CREF
HREF
Byte number for pixels:
Y signal
50 Hz
U and V signal
Y signal
60 Hz
U and V signal
762
U762
634
U634
763
V762
635
V634
764
U764
636
U636
765
V764
637
V636
end of
active line
766
U766
638
U638
MEH233-2
767
V766
639
V638
MEH234-3
Fig.6 Line control by HREF in 4:2:2 format for 50 Hz and 60 Hz systems.
August 199615
Page 16
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
(a) 1st field
input CVBS
HREF
VS
ODD
(b) 2nd field
input CVBS
HREF
VS
625123456789
313314315316317318319320321
SAA7191B
541 x 2/LLC
2 x 2/LLC
69 x 2/LLC
ODD
handbook, full pagewidth
(a) 1st field
input CVBS
HREF
VS
ODD
(b) 2nd field
input CVBS
HREF
VS
2 x 2/LLC
50 Hz
525123456789
2 x 2/LLC
263264265266267268269270271
59 x 2/LLC
MEH224-1
449x 2/LLC
ODD
60 Hz
Fig.7 Vertical timing diagram for 50 / 60 Hz.
August 199616
2 x 2/LLC
MEH225-1
Page 17
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
RTCO
(1)Sequence bit:
SECAM: 0 equals DB-line
1 equals DR-line
PAL: 0 equals (R-Y) line normal
1 equals (R-Y) line inverted
NTSC: 0 (no change)
(2) Reserve bits: 276 for 50 Hz systems; 188 for 60 Hz systems
H/L transition
(counter start)
128 clocks
13
0
HPLL
increment
bits 13 to 0
4
4 bits
reserve
0
14
198
bit
22
20
time slot
(LLC/4)
15
FSCPLL
increment
bits 21 to 0
10
not validvalid
SAA7191B
3 bits
sequence bit (1)
reserve
5
0
1
63
reserved (2)
67
MEH442
Fig.8 RTCO timing.
8LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134);
ground pins 19, 35, 38, 51 and 67 as well as supply pins 5, 18, 28, 37 and 52 connected together.
SYMBOLPARAMETERMIN.MAX.UNIT
V
DD
V
diff GND
V
I
V
O
P
tot
T
stg
T
amb
V
ESD
supply voltage (pins 5, 18, 28, 37, 52)−0.57.0V
difference voltage V
SS A
− V
SS (1 to 4)
−±100mV
voltage on all inputs−0.5VDD+0.5V
voltage on all outputs (I
= 20 mA)−0.5VDD+0.5V
O max
total power dissipation−2.5W
storage temperature range−65150°C
operating ambient temperature range070°C
electrostatic handling
(1)
for all pins−±2000V
Note
1. Equivalent to discharging a 100 pF capacitor through an 1.5 kΩ series resistor.
August 199617
Page 18
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
9CHARACTERISTICS
V
= 4.5 to 5.5 V; T
DD
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
DD
I
DD
2
C-bus, SDA and SCL (pins 40 and 41)
I
V
IL
V
IH
I
40,41
I
ACK
V
OL
supply voltage range (pins 5, 18, 28, 37, 52)4.555.5V
total supply current (pins 5, 18, 28, 37, 52)VDD= 5 V; inputs LOW;
input voltage LOW−0.5−1.5V
input voltage HIGH3−VDD+0.5 V
input current−−±10µA
output current on pin 40acknowledge3−-mA
output voltage at acknowledgeI40=3mA−−0.4V
Data clock and control inputs (pins 3, 4, 6 to 17, 20 to 23, 27, 34, 43 and 64), Fig.11
V
IL
V
IH
V
IL
V
IH
I
LI
C
I
t
SU.DAT
t
HD.DAT
LLC input voltage LOW (pin 27)
LLC input voltage HIGH
input data set-up timeFig.911−−ns
input data hold time3−−ns
LFCO output (pin 36)
V
o
V
36
output signal (peak-to-peak value)note 21.4−2.6V
output voltage range1−V
YUV-bus, HREF and VS outputs (pins 30, 42, 45 to 50 and pins 53 to 62)
V
OL
V
OH
C
L
output voltage LOWnotes 1 and 20−0.6V
output voltage HIGH2.4−V
load capacitance15−50pF
Control outputs (pins 24 to 26, 29, 31, 32, 39, 63, 65, 66 and 68); Fig.12
V
OL
V
OH
C
L
output voltage LOWnotes 1 and 20−0.6V
output voltage HIGH2.4−V
load capacitance7.5−25pF
= 0 to 70 °C unless otherwise specified.
amb
outputs not connected
I/O high-ohmic
clock inputs
−100250mA
−0.5
2.4−−
−0.5
2.0−−
−
−
−
−
−
−
0.6
VDD+0.5VV
0.8
VDD+0.5VV
8
8
10
DD
pF
pF
pF
V
Figures 10 and 15 to 25
DD
DD
V
V
August 199618
Page 19
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Timing of YUV-bus and control outputs
t
OH
t
OS
t
SZ
t
ZS
t
RTCO
output signal hold timeYUV, HREF, VS at
output set-up timeYUV, HREF, VS at
data output disable transition timeto 3-state condition16−−ns
data output enable transition timefrom 3-state condition14−−ns
RTCO timingFig.8
Chrominance PLL
f
C
catching range±400 −−Hz
Crystal oscillator
f
n
∆f / f
nominal frequency3rd harmonic−26.8−MHz
permissible deviation f
n
temperature deviation from f
n
n
X1crystal specification:
temperature range T
load capacitance C
series resonance resistance R
motional capacitance C
parallel capacitance C
amb
L
S
1
0
Philips catalogue number9922 520 30004
Line locked clock input LLC (pin 27)
t
LLC
t
p
t
r
t
f
cycle timenote 331−45ns
duty factort
rise time−−5ns
fall time−−6ns
Notes
1. Data output signals are Y7 to Y0 and UV7 to UV0. All others are control output signals.
2. Levels are measured with load circuit. YUV-bus, HREF and VS outputs with 1.2 kΩ in parallel to 50 pF at 3 V (TTL
load); LFCO output with 10 kΩ in parallel to 15 pF and other outputs with 1.2 kΩ in parallel to 25 pF at 3 V (TTL load).
3. tSU, tHD, tOHand tODinclude trand tf.
Fig.8
CL= 15 pF
controls at C
CL= 50 pF;
controls at C
Fig.10
Fig.9
/ t
LLCH
LLC
13−−ns
= 7.5 pF13−−ns
L
14−−ns
= 25 pF14−−ns
L
−−±5010
−−±2010
0−70°C
8−−pF
−5080Ω
−1.1±20% −fF
−3.5±20% −pF
40−60%
−6
−6
August 199619
Page 20
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
t
LLC H
clock input LLC
t
SUtHD
input data
input CREF
t
output data
ZS
t
OS
t
OH
not valid
not valid
SAA7191B
t
LLC
2.4 V
1.5 V
0.6 V
t
f
t
r
2.0 V
0.8 V
2.0 V
0.8 V
t
t
SU
HD
2.4 V
0.6 V
input FEIN
handbook, full pagewidth
1 nF
t
SZ
t
SU
t
HD
Fig.9 Data input and output timing diagram.
26.8 MHz
(3rd harmonic)
X1
10 µH
± 20 %
10 pF
10 pF
XTAL
(1)
(1)
33
XTALI
34
(1) value depends on
crystal parameters
SAA7191B
XTAL
XTALI
33
SAA7191B
34
(a)(b)
Fig.10 Oscillator application (a) and optional clock from external source (b).
2.4 V
0.6 V
MEH231-1
MEH439
August 199620
Page 21
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
+127
+106
+95
-52
-64
-91
-103
-128
-132
0
reserved
luminance
PAL, SECAM
sync
luminance
NTSC
chrominance
PAL and SECAM
blanking level
chrominance
NTSC
+127
+76
0
-76
-128
chrominance
input range
(red, cyan 75 %)
SAA7191B
(a) CVBS7 to CVBS0 input signal range.
+255
+235
+128
+16
0
luminance
output range
white 100 %
black
(c) Y output signal range.
1. All levels are related to EBU colour bar.
2. Values in decimal at 100% luminance and 75% chrominance amplitude.
+255
+212
+128
U-component
output range
+44
0
(d) U output signal range (B-Y).
(b) CHR7 to CHR0 input signal range.
+255
blue 75 %
yellow 75 %
+212
+128
+44
0
V-component
output range
(e) V output signal range (R-Y).
red 75 %
cyan 75 %
MEH254-1
Fig.11 Input and output signal ranges.
August 199621
Page 22
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
handbook, full pagewidth
CVBS
HSY
HSY
programming
range
(step size:
2/LLC)
HCL
HCL
programming
range
(step size:
2/LLC)
+ 191
+ 127
62 x 2/LLC
processing delay CVBS - YUV
at YDEL = 000 b
220 LLC
0
0
SAA7191B
burst
– 64
– 128
10 x 2/LLC
Y-output
HREF (50 Hz)
PLIN (50 Hz )
HS (50 Hz)
HS (50 Hz)
programming range
(step size: 8/LLC)
HREF (60 Hz)
HS (60 Hz)
HS (60 Hz)
programming range
(step size: 8/LLC)
+ 97
38 x 2/LLC
0
38 x 2/LLC
0
176 x 2/LLC768 x 2/LLC
100 x 2/LLC
64 x 2/LLC
– 118+ 117
140 x 2/LLC640 x 2/LLC
64 x 2/LLC
– 97
MEH226-2
Fig.12 Horizontal sync at HRMV = 0 and HRFS = 0 for 50/60 Hz (signals HSY, HCL, HREF and PLIN).
August 199622
Page 23
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August 199623
signal source selected by GPSW1-bit (LOW = source 1)
Ω
Ω
Ω
Ω
µF
0.22 µF
10
10 µF
Ω
1 µF
1 µF
680
1 µF
+
15
+
16
+
Ω
19
+
V
DDA
24
25
26
27
28
chrominance V , source 1
chrominance V , source 2
Y or CVBS V , source 1
Y or CVBS V , source 2
HSY
HCL
LLCA
i
i
2.2 k
5.6
i
i
Ω
Ω
75
75
75
75
0.1
analog
17
18
20
21
TDA8708A
22
23
ull pagewidth
14
CVBS0
13
CVBS1
12
CVBS2
11
CVBS3
10
9
8
V
DDO
7
V
DDD
6
CLK
5
CVBS4
4
CVBS3
3
CVBS2
2
CVBS7
1
120
Ω
digital
68
pF
0.1
µF
18
0.1
5.6
Ω
digital
14
CHR0
13
CHR1
12
CHR2
11
CHR3
10
9
8
V
DDO
7
V
DDD
6
CLK
5
CHR4
4
CHR5
3
CHR6
2
CHR7
1
120
0.1 µF
Ω
0.1
µF
68 pF
18
Ω
1 µF
+
V
DDA
1 k
5.6
15
16
17
18
19
20
21
TDA8709A
22
23
24
25
26
27
28
Ω
Ω
1 µF
+
1 µF
+
Ω
680
2.2 k
Ω
0.1 µF
0.1 µF
0.1
µF
µF
Ω
5.6
Ω
4.7 k
analog
2.7 k
Ω
Ω
CHR7
to
CHR0
CVBS7
CVBS0
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
to
+5 V (analog supply)
+5 V (digital supply)
SAA7191B
MEH443
Fig.13 Application circuit for analog-to-digital conversions.
Page 24
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
V
SS
handbook, full pagewidth
XTAL: Philips 9922 520 30004
X1
10 pF
10 Hµ
1 nF
0.1 Fµ
0.1 Fµ
0.1 Fµ
0.1 Fµ
digital
+5 V
chrominance
CHR7 to CHR0
luminance
CVBS7 to CVBS0
26.8 MHz
10 pF
V
DD
CHR0
CHR1
CHR2
CHR3
CHR4
CHR5
CHR6
CHR7
L0
L1
L2
L3
L4
L5
L6
L7
reset
516738 19
5
18
28
52
6
7
8
9
10
11
12
13
14
15
16
17
20
21
22
23
33
34
3
27
4
24 25
36
i.c.
4432
SAA7191B
66
horizontal
lock flag
HL
62
61
60
59
58
57
56
55
54
53
50
49
48
47
46
45
39
31
30
29
26
42
41
40
68
65
63
64
43
35
37
SAA7191B
ODD
HS
VS
HSY
HCL
HREF
SCL
SDA
RTCO
GPSW0
digital
UV7 to UV0
YUV-bus
Y7 to Y0
2
I C-bus
UV0
UV1
UV2
UV3
UV4
UV5
UV6
UV7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
FEON
FEIN
IICSA
2
1
VSSA
VDDA
digital
LFCO
11
S1
S2
RESN
LLCA
CREF
LLCB
LLC2A
LLC2B
19
16
12
7
15
10
14
20
Fig.14 Application circuit for digital multistandard colour decoder.
August 199624
PLIN
5
2
3
4
8
17
1
SAA7197
6
9
13
18
+5 V
0.1 Fµ
0.1 Fµ
0.1 Fµ
2.2 Hµ
0.1 Fµ
digital
0.1 Fµ
V
DD analog
+
10 Fµ
analog
V
DD digital
+5 V
+5 V
MEH440-1
Page 25
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
10 I2C-BUS FORMAT
SSLAVE ADDRESSASUBADDRESSADATA0ADATAnAP
S=start condition
SLAVE ADDRESS=1000 101X (IICSA = LOW) or 1000 111X (IICSA = HIGH)
A=acknowledge, generated by the slave
SUBADDRESS
DATA=data byte (Table 5)
P=stop condition
X=read/write control bit
Note
1. If more than 1 byte DATA are transmitted, then auto-increment of the subaddress is performed.
(1)
=subaddress byte (Table 5)
X = 0, order to write (the circuit is slave receiver)
X = 1, order to read (the circuit is slave transmitter)
2
Table 5 I
FUNCTION
status byteSTTCHLCKFIDTXXXXCODE
Function of the bits:
STTCHorizontal time constant information for future application with logical combfilter only:
CORI1toCORI0Coring range for high frequency components according to 8-bit luminance, Fig.15.
“06”CORI1CORI0coring
toIDEL0Increment delay time (dependent on application), step size = 4 / LLC. The delay time is
selectable from −4 / LLC (−1 decimal multiplier) to −1024 / LLC (−256 decimal multiplier)
equals data FF to 00 (hex). Different processing times in the chrominance channel and the
clock generation could result in phase errors in the chrominance processing by transients in
clock frequency . An adjustable delay (IDEL) is necessary if the processing time in the clock
generation is unknown.
toHSYB0Horizontal sync begin for 50 Hz, step size = 2 / LLC. The delay time is selectable from
−382/LLC (+191 decimal multiplier) to +128/LLC (−64 decimal multiplier) equals data BF to
C0 (hex). Two’s complement numbers with “hidden” sign-bit. The sign-bit is generated
internally by evaluating the MSB and the MSB−1 bits.
toHSYS0Horizontal sync stop for 50 Hz, step size = 2 / LLC. The delay time is selectable from
−382/LLC (+191 decimal multiplier) to +128/LLC (−64 decimal multiplier) equals data BF to
C0 (hex). Two’s complement numbers with “hidden” sign-bit. The sign-bit is generated
internally by evaluating the MSB and the MSB−1 bits.
toHCLB0Horizontal clamp start for 50 Hz, step size = 2 / LLC. The delay time is selectable from
−254/LLC (+127 decimal multiplier) to +256/LLC (−128 decimal multiplier) equals data 7F to
80 (hex).
toHCLS0Horizontal clamp stop for 50 Hz, step size = 2 / LLC. The delay time is selectable from
−254/LLC (+127 decimal multiplier) to +256/LLC (−128 decimal multiplier) equals data 7F to
80 (hex).
toHPHI0Horizontal sync after PHI1 for 50 Hz, step size = 8 / LLC. The delay time is selectable from
−936 /LLC (+1 17 decimal multiplier) to +944/LLC (−1 18 decimal multiplier) equals data 75 to
8A (hex).
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
HS6B7
“14”
HS6S7
“15”
HC6B7
“16”
HC6S7
“17”
HP6I7
“18”
toHS6B0Horizontal sync begin for 60 Hz, step size = 2 / LLC. The delay time is selectable from
−382/LLC (+191 decimal multiplier) to +128/LLC (−64 decimal multiplier) equals data BF to
C0 (hex). Two’s complement numbers with “hidden” sign-bit. The sign-bit is generated
internally by evaluating the MSB and the MSB−1 bits.
toHS6S0Horizontal sync begin for 60 Hz, step size = 2 / LLC. The delay time is selectable from
−382/LLC (+191 decimal multiplier) to +128/LLC (−64 decimal multiplier) equals data BF to
C0 (hex). Two’s complement numbers with “hidden” sign-bit. The sign-bit is generated
internally by evaluating the MSB and the MSB−1 bits.
toHC6B0Horizontal clamp begin for 60 Hz, step size=2/LLC. The delay time is selectable from
−254/LLC (+127 decimal multiplier) to +256/LLC (−128 decimal multiplier) equals data 7F
to 80 (hex).
toHC6S0Horizontal clamp stop for 60 Hz, step size = 2 / LLC. The delay time is selectable from
−254/LLC (+127 decimal multiplier) to +256/LLC (−128 decimal multiplier) equals data 7F
to 80 (hex).
toHP6I0Horizontal sync after PHI1 for 60 Hz, step size=8/LLC. The delay time is selectable from
−776/LLC (+97 decimal multiplier) to +776 /LLC (−97 decimal multiplier) equals data 61 to
9F (hex).
Fig.15 Coring function adjustment by subaddress 06 to affect the bandfilter output signal. The thresholds are
related to the 13-bit word width in the luminance processing part and influence the 1LSB to 3LSB
(Y0 to Y2) with respect to the 8-bit luminance output
August 199631
Page 32
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
63h
f (MHz)
MEH214
53h
73h
Y
handbook, full pagewidth
18
12
V
Y
(dB)
6
0
-6
-12
-18
-24
-30
0132456
63h
73h
53h
43h
43h
Fig.16 Luminance control in 50 Hz / CVBS mode controllable by subaddress byte 06; pre-filter on and coring off;
maximum aperture bandpass filter characteristic.
42h
40h
MEH215
61h
f (MHz)
Y
handbook, full pagewidth
V
Y
(dB)
18
12
6
0
-6
-12
-18
-24
-30
0132456
61h
62h
41h
42h
41h
62h
40h
Fig.17 Luminance control in 50 Hz / CVBS mode controllable by subaddress byte 06; pre-filter on and coring off;
other aperture bandpass filter characteristics.
August 199632
Page 33
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
13h
23h
f (MHz)
Y
MEH216
33h
00h
handbook, full pagewidth
18
12
V
Y
(dB)
6
0
-6
-12
-18
-24
-30
0132456
23h
13h
00h
33h
03h
03h
Fig.18 Luminance control in 50 Hz / CVBS mode controllable by subaddress byte 06; pre-filter off and coring off;
maximum aperture bandpass filter characteristic.
53h
MEH217
f (MHz)
Y
andbook, full pagewidth
18
12
V
Y
(dB)
6
0
-6
-12
-18
-24
-30
0132456
63h
73h
43h
53h
43h
63h
73h
Fig.19 Luminance control in 60 Hz / CVBS mode controllable by subaddress byte 06; pre-filter on and coring off;
maximum aperture bandpass filter characteristic.
August 199633
Page 34
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
42h
f (MHz)
Y
MEH218
handbook, full pagewidth
18
12
V
Y
(dB)
6
0
-6
-12
-18
-24
-30
0132456
62h
61h
41h
50h
42h
43h
62h
50h
61h
Fig.20 Luminance control in 60 Hz / CVBS mode controllable by subaddress byte 06; pre-filter on and coring off;
other aperture bandpass filter characteristics.
13h
f (MHz)
Y
MEH219
handbook, full pagewidth
V
Y
(dB)
18
03h
00h
33h
03h
33h
23h
00h
12
6
0
-6
-12
-18
-24
-30
0132456
23h
13h
Fig.21 Luminance control in 60 Hz / CVBS mode controllable by subaddress byte 06; pre-filter off and coring off;
maximum and minimum aperture bandpass filter characteristics.
August 199634
Page 35
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
MEH220
83h
82h
80h
68
f (MHz)
Y
V
Y
(dB)
18
12
-6
-12
-18
handbook, halfpage
6
0
02
81h
4
V
Y
(dB)
18
12
-12
-18
handbook, halfpage
6
0
-6
02
C3h
C1h
4
SAA7191B
MEH221
C2h
C0h
68
f (MHz)
Y
Fig.22 Luminance control in 50 Hz / S-VHS mode
controllable by subaddress byte 06;
pre-filter off and coring off; different
aperture bandpass filter characteristics.
MEH222
82h
80h
68
f (MHz)
Y
V
Y
(dB)
18
12
-6
-12
-18
handbook, halfpage
6
0
02
83h
81h
4
Fig.23 Luminance control in 50 Hz / S-VHS mode
controllable by subaddress byte 06;
pre-filter on and coring off; different
aperture bandpass filter characteristics.
MEH223
C2h
68
f (MHz)
Y
V
(dB)
18
12
Y
-6
-12
-18
handbook, halfpage
6
0
02
C3h
C1h
C0h
4
Fig.24 Luminance control in 60 Hz / S-VHS mode
controllable by subaddress byte 06;
pre-filter off and coring off; different
aperture bandpass filter characteristics.
August 199635
Fig.25 Luminance control in 60 Hz / S-VHS mode
controllable by subaddress byte 06;
pre-filter on and coring off; different
aperture bandpass filter characteristics.
Page 36
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
11 PROGRAMMING EXAMPLE
Coefficients to set operation for application circuits Figures 13 and 14. (All numbers of the Table 6 are hex values).
Slave address byte is 8A at pin 43 = 0 V (or 8E at pin 43 = +5 V).
PLSE(7-0)
SESE(7-0)
COLO, LFIS(1-0)
VTRC, NFEN,HRMV,
GPSW0 and SECS
OEDY, CHRS, GPSW(2-1)
OFTS, YDEL(2-0)
HRFS, VNOI(1-0)
CHCV(7-0)
−
−
HS6B(7-0)
HS6S(7-0)
HC6B(7-0)
HC6S(7-0)
HP6I(7-0)
increment delay
H sync beginning for 50 Hz
H sync stop for 50 Hz
H clamping beginning for 50 Hz
H clamping stop for 50 Hz
H sync position for 50 Hz
luminance bandwidth control:
hue control (0 degree)
colour-killer threshold QUAM
colour-killer threshold SECAM
PAL switch sensitivity
SECAM switch sensitivity
chroma gain control settings
standard/mode control
50
30
00
E8
B6
F4
01
00
F8
F8
90
90
00
00
(1)
(2)(4)
I/O and clock control79, 7E
00
2C
00
00
34
0A
F4
CE
F4
(6)
(8)
miscellaneous control #191
miscellaneous control #2
chrominance gain nominal value
set to zero
set to zero
H sync beginning for 60 Hz
H sync stop for 60 Hz
H clamping beginning for 60 Hz
H clamping stop for 60 Hz
H sync position for 60 Hz
, 99
, 59
, 01
(5)
(3)(4)
(7)
(9)
Notes
1. dependent on application (Figures 16 to 25)
2. for QUAM standards
3. for SECAM
4. HPLL is in TV mode; value for VCR mode is 80
(81 for SECAM VCR mode)
5. for Y/C mode
6. 4:1:1 format
August 199636
7. 4:2:2 format
8. nominal value for UV CCIR level with NTSC source
9. nominal value for UV CCIR level with PAL source
Page 37
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
12 PACKAGE OUTLINE
PLCC68: plastic leaded chip carrier; 68 leads
e
y
61
68
1
pin 1 index
D
X
4460
SAA7191B
SOT188-2
e
E
A
Z
E
43
b
p
b
1
w M
H
E
E
e
A
A
1
A
4
(A )
3
k
9
β
1
27
k
1026
e
Z
D
H
D
D
v M
A
B
v M
B
0510 mm
scale
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
UNIT A
mm
0.180
inches
0.165
A
1
min.max.max.max. max.
4.57
0.51
4.19
0.020
A
0.25
0.01
A
4
3
3.30
0.13
b
0.53
0.33
0.021
0.013
b
p
1
0.81
0.66
0.032
0.026
(1)
D
24.33
24.13
0.958
0.950
(1)
E
eH
e
D
1.27
0.05
23.62
22.61
0.930
0.890
24.33
24.13
0.958
0.950
e
23.62
22.61
0.930
0.890
H
D
E
25.27
25.27
25.02
25.02
0.995
0.995
0.985
0.985
Note
1. Plastic or metal protrusions of 0.01 inches maximum per side are not included.
OUTLINE
VERSION
SOT188-2
IEC JEDEC EIAJ
112E10MO-047AC
REFERENCES
k
1
k
E
1.22
1.07
0.048
0.042
0.51
0.020
L
1.44
1.02
0.057
0.040
detail X
p
EUROPEAN
PROJECTION
L
p
(1)(1)
Z
Z
E
D
ywvβ
0.18 0.100.18
0.007 0.0040.007
2.16
0.085
2.16
0.085
o
45
ISSUE DATE
92-11-17
95-03-11
August 199637
Page 38
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
Square Pixel (DMSD-SQP)
13 SOLDERING
13.1Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“IC Package Databook”
13.2Reflow soldering
Reflow soldering techniques are suitable for all PLCC
packages.
The choice of heating method may be influenced by larger
PLCC packages (44 leads, or more). If infrared or vapour
phase heating is used and the large packages are not
absolutely dry (less than 0.1% moisture content by
weight), vaporization of the small amount of moisture in
them can cause cracking of the plastic body. For more
information, refer to the Drypack chapter in our
Reference Handbook”
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
(order code 9398 652 90011).
“Quality
(order code 9397 750 00192).
SAA7191B
13.3Wave soldering
Wave soldering techniques can be used for all PLCC
packages if the following conditions are observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream corners.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
13.4Repairing soldered joints
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
August 199638
Page 39
Philips SemiconductorsProduct specification
Digital Multistandard Colour Decoder,
SAA7191B
Square Pixel (DMSD-SQP)
14 DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
15 LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
16 PURCHASE OF PHILIPS I
Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
2
C COMPONENTS
2
C components conveys a license under the Philips’ I2C patent to use the
August 199639
Page 40
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands657027/00/01/pp40 Date of release: August 1996Document order number: 9397 750 02437
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