Preliminary specification
File under Integrated Circuits, IC02
1997 Jun 10
Page 2
Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
FEATURES
• Horizontal sample rate conversion in both zoom and
compress direction, with a sample rate conversion factor
between 0.5 and 2 (in 384 steps)
• Dynamic sample rate conversion for panorama mode
display e.g. 4 : 3 material on a 16 : 9 display
• Dynamic sample rate conversion for amaronap mode
display of e.g. 16 : 9 material on a 4 : 3 display
• Operates with 1fh and 2f
h
• Programmable via microcontroller SNERT
(Synchronous No parity Eight bit Receive Transmit) bus.
GENERAL DESCRIPTION
The PAN-IC is an add-on IC to be used, for example,
between analog-to-digital conversion and a serial (field)
memory. The device performs the following tasks:
• Linear horizontal sample rate conversion in both zoom
and compress direction, with a sample rate conversion
factor between 0.5 and 2
• Dynamic sample rate conversion for panorama mode
display of e.g. 4 : 3 material on a 16 : 9 display
• Dynamic sample rate conversion for amaronap mode
display of e.g. 16 : 9 material on a 4 : 3 display.
The PAN-IC has the ability to increase the data rate from
the ADC to a maximum of twice the data rate at the output.
To achieve this a clock rate at twice the normal output
clock rate is needed to write data to the memory.
All actions to generate a lower data rate, produces disable
cycles in Write Enable (WE).
7write enable input
TEST8test mode switch
SCANIN9input for scan chain
V
DD1
10supply voltage 1
T011test mode switch 0
GND112ground 1
T113test mode switch 1
WE
V
DD2
od
14write enable odd samples
15supply voltage 2
GND216ground 2
WE
V
O0
V
O1
U
O0
U
O1
Y
O0
Y
O1
O
17write enable output
18V output bit 0
19V output bit 1
20U output bit 0
21U output bit 1
22luminance output bit 0
23luminance output bit 1
SYMBOLPINDESCRIPTION
Y
O2
Y
O3
Y
O4
Y
O5
Y
O6
Y
O7
24luminance output bit 2
25luminance output bit 3
26luminance output bit 4
27luminance output bit 5
28luminance output bit 6
29luminance output bit 7
GND330ground 3
CLK31system clock
GND432ground 4
V
DD3
33supply voltage 3
SNDA34data input from interface
SNERT bus
SNCL35clock input from interface
SNERT bus
VRST36reset input in the vertical
blanking interval
Y
I7
Y
I6
Y
I5
Y
I4
Y
I3
Y
I2
Y
I1
Y
I0
37luminance input bit 7
38luminance input bit 6
39luminance input bit 5
40luminance input bit 4
41luminance input bit 3
42luminance input bit 2
43luminance input bit 1
44luminance input bit 0
1997 Jun 104
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
handbook, full pagewidth
WE
TEST
SCANIN
V
DD1
T0
GND1
T1
WE
od
V
DD2
GND2
WE
DD4
CL16
VI0VI1UI0UI1Y
V
6
5
4
3
2
7
I
8
9
10
11
12
13
14
15
16
17
O
18
19
O1UO0UO1YO0YO1YO2
O0
V
V
SAA4995WP
21
20
22
I0
I1
YI2YI3Y
Y
1
44
43
42
23
24
25
26
O3
YO4YO5Y
Y
I4
41
40
39
Y
I5
Y
38
I6
37
Y
I7
36
VRST
SNCL
35
34
SDNA
V
33
DD3
GND4
32
CLK
31
30
GND3
Y
29
O7
27
28
MGK175
O6
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The PAN-IC is an add-on IC to be used, for example,
between analog-to-digital conversion and a serial (field)
memory. The device performs the following tasks:
• Linear horizontal sample rate conversion in both zoom
and compress direction, with a sample rate conversion
factor between 0.5 and 2
• Dynamic sample rate conversion for panorama mode
display of e.g. 4 : 3 material on a 16 : 9 display
• Dynamic sample rate conversion for amaronap mode
display of e.g. 16 : 9 material on a 4 : 3 display.
The PAN-IC has the ability to increase the data rate from
the ADC (maximum 16 MHz in a 16/32 MHz concept) to a
maximum of twice the data rate. For this, a 32 MHz clock
rate is needed to write to the memory. All actions to
generate a lower data rate produces disable cycles in write
enable.
In panorama and amaronap modes, the sample rate
conversion factor is modulated along the video line.
In the centre of the line a high quality compression (e.g.
4
with a factor
⁄3) has to be made. Towards the sides of the
line, more and more expansion and compression
respectively is made. The sample rate conversion factor
over a line will have a bathtub shape, with parameters
illustrated in Fig.3:
• X0l and X0r, where in-between a constant data rate is
maintained (area I) and starting points from where a
curve can be programmed for its 2nd derivative (in
areas II and V)
• X1l and X1r, points from where a new curve can be
programmed for its 2nd derivative (for areas III and IV)
• X2l corresponds to the first sample in the output data
stream, defined by start of WE
I
• X2r corresponds to the last sample in the output data
stream, defined by the programmed number of samples
• C1, which controls the second derivatives of the data
rate in areas II and V
• C2, which controls the second derivatives of the data
rate in areas III and IV.
1997 Jun 105
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
Interpolation function
The interpolation for phase positions between the original
samples, is achieved with a variable phase delay filter with
10 taps for luminance signals and 4 taps for chrominance
signals. For luminance the PAN-IC supplies samples up to
32 MHz. For chrominance the PAN-IC supplies each
U and V samples with a data rate of 8 MHz (max).
Processing control in the PAN-IC
The compress factor (see Fig.4) at any position in the lines
is a function of the dynamically changing DTO-increment.
When DTO
DTO
incr
unchanged; when DTO
= 255, the sample rate is divided by 2; when
incr
= 0, the sample rate in the PAN-IC remains
= −128, the sample rate is
incr
doubled.
Control of number of samples per line
Three possibilities exist for the relationship between the
end of WE
and the required number of samples per line for
I
storage in the field memory:
• WEI negative edge coincides with the required last
sample in the line; standard operation.
• WEI negative edge is reached before the present last
sample in the line was required; extra dummy WE cycles
will be generated at the maximum rate (zoom factor 2)
to arrive at the required number of samples per line.
• The required number of samples per line is reached
before WEI negative edge; the DTO calculations will
continue until the required number of samples is
reached, but without generation of WE cycles.
The programmed number of samples per line is thus
always realized, independent of all other controls (unless
the line period becomes insufficient to store up to the last
sample in a line). When using odd/even sample
distribution, the programmed number of samples refers to
the number of samples in each data stream.
Consequently, the total number of samples is twice as
many.
There is an offset in the programmed number of samples
compared to the effective number of samples per line.
• Effective number of Y samples = 4 × (programmed
number of samples + 1)
• Effective number of UV samples = 1 × (programmed
number of samples + 1)
SECAM Y notch
A notch filter at the Y input of the PAN-IC can be switched
on. The purpose of this filter is to prevent artefacts from
scan velocity modulation with SECAM inputs. The notch
filter is an FIR filter with coefficients (−103030−1).
When fs= 16 MHz, the notch frequency is 4 MHz; the
maximum gain of the filter is +3 dB at 2 and 6 MHz.
Timing
The inputs are related to CL16 (half system clock). This
clock is used for reference in the PAN-IC from the CL16
pin. The system clock must have a fixed phase relationship
to the CL16 enable signal (one clock system).
Relationship of WE to video data
WE inputs and outputs may be used with either coincident
or advanced WE to video timing (see Fig.5). The advanced
WE to video timing is applicable to field memories, such as
the SAA4955TJ. The input and output WEs of the PAN-IC
can be programmed separately to either timing by the
in-phase and out-phase bits.
Odd/even sample distribution
The PAN-IC usually delivers a complete YUV data stream
to one receiving device, e.g. a field memory. Optionally, a
data stream can be split into odd and even samples, to be
received by two receiving devices.
The relationship between Y and UV samples is then
non-trivial (see Tables 1 to 4).
1997 Jun 106
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
NO SPLITTING INTO ODD AND EVEN SAMPLE STREAM
Table 1 Normal output YUV data stream
EOEOEOEOEOEOE
0
Y
0
UV
76
S
PLITTING INTO ODD AND EVEN SAMPLE STREAM
Keeps corresponding parts of the UV samples in one stream (UV0, UV8, etc. in even stream and UV4, UV12, etc. in odd
stream): The odd data stream misses two samples at the start of a line and has two dummy samples at the end of the
line, to keep the UV format correct and maintain the same line length as for the even stream (In the odd stream, the last
two Y samples and the last U and V samples of a line are not valid).
Table 2 Even YUV data stream
E−E−E−E−E−E−E
0
Y
0
UV
76
1
Y
0
UV
54
−Y
−UV
2
Y
0
UV
32
2
0
54
3
Y
0
UV
10
−Y
−UV
4
Y
4
UV
76
4
0
32
5
Y
4
UV
54
−Y
−UV
6
Y
4
UV
32
6
0
10
7
Y
4
UV
10
−Y
−UV
8
Y
8
UV
76
8
8
76
9
Y
8
UV
54
−Y
−UV
Y10Y
8
UV
32
10
8
54
11
8
UV
10
−Y
−UV
UV
12
Y
12
76
12
12
32
Table 3 Odd YUV data stream
−−−−−O−O−O−O−
−−−−−Y
−−−−−UV
5
4
76
−Y
−UV
7
4
54
−Y
−UV
9
4
32
−Y11−
−UV
4
10
−
The even and odd data streams given in Tables 2 and 3 can be distributed to two receiving devices with input enable
facilities. A separate input signal for each of the receiving devices must then be applied while the even YUV data stream
and odd YUV data stream are again combined.
OMBINED ODD/EVEN OUTPUT YUV DATA STREAM
C
Table 4 Distribution with odd/even input enable signals
E−E−E−EOEOEOE
0
Y
0
UV
76
−Y
−UV
2
0
54
−Y
−UV
4
0
32
5
Y
4
UV
76
6
Y
0
UV
10
7
Y
4
UV
54
8
Y
8
UV
75
9
Y
4
UV
32
Y10Y
8
UV
54
UV
11
10
12
Y
4
UV
8
32
1997 Jun 107
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
handbook, full pagewidth
area:
sample
rate
positions:
active period
IV
C
2
X
2I
X
V
C
1
1I
X
0I
I
C
0
II
C
1
X
0r
III
C
2
X
1r
X
MGK177
2r
Fig.3 Panorama mode.
handbook, full pagewidth
2
compress
factor
1
0.5
−256−1280
Fig.4 Compress factor.
1997 Jun 108
DTO
incr
MGK178
256
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
handbook, full pagewidth
CL16
WE
I
WE
I
YUV
I
CLK
WEO/WE
WEO/WE
YUV
od
od
O
Fig.5 WE timing.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
with in-phase = 0
with in-phase = 1
with out-phase = 0
with out-phase = 1
MGK179
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
V
I
o/out
DD
, V
i
o
supply voltage−0.5+6.5V
input and output voltages−0.5VDD+ 0.5V
output current per output pin−20mA
P/outpower dissipation per output pin−100mW
T
T
V
stg
amb
ESD
storage temperature−55+140°C
operating ambient temperature−40+85°C
electrostatic handling for all pinsnote 1−±2000V
note 2−±300V
Notes
1. Human body model: C = 100 pF, R = 1.5 kΩ, V = 2 kV.
2. Machine model: C = 200 pF, R = 0 Ω, V = 300 V.
THERMAL CHARACTERISTICS
SYMBOLPARAMETERVALUEUNIT
R
th j-a
thermal resistance from junction to ambient in free air50K/W
1997 Jun 109
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
CHARACTERISTICS
V
= 5.0 V; T
DD
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
DD
I
DD
f
CLK
f
CL16
V
IL
V
IH
C
i
V
OL
V
OH
t
su(i)(D)
t
h(i)(CL16)
t
su(i)(CL16)
t
h(i)(CL16)
t
h(o)
t
d
T
amb
T
j
=25°C; unless otherwise specified.
amb
supply voltage4.555.5V
supply current−110−mA
operating frequency (CLK)−−33MHz
operating frequency (CL16)−
1
⁄2f
CLK
−MHz
LOW level input voltage−−0.8V
HIGH level input voltage2.0−V
DD
V
input capacitance−1015pF
LOW level output voltageIo=4mA−−0.4V
HIGH level output voltageIo= −4 mA2.63.4−V
input set-up time with respect to CL16
rising edge
input hold time with respect to CL16
rising edge
input set-up time with respect to CLK
except pins SNDA, SNCL,
8−−ns
VRST and CLK; see Fig.6
except pins SNDA, SNCL,
0−−ns
VRST and CLK; see Fig.6
see Fig.67−−ns
rising edge
input hold time with respect to CLK
see Fig.63−−ns
rising edge
output hold time with respect to CLKCL= 7 pF5−−ns
output delay time with respect to CLKCL=15pF−−19ns
operating ambient temperature0−70°C
junction temperature−−125°C
handbook, full pagewidth
CLK
t
t
su(i)(D)
h(i)(CL16)
t
h(i)(D)
t
CL16
data
input
data
output
t
su(i)(CL16)
Fig.6 Clock timing.
1997 Jun 1010
h(o)
t
su(i)(CL16)
t
d
t
h(i)(CL16)
data validdata valid
MGK180
Page 11
Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
MICROCONTROLLER BUS TIMING (SNERT BUS)
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
T
cy(SNCL)
t
su(i)
t
h(i)
t
h(o)(D)
t
d
SNCL cycle timesee Fig.71−µs
input data set-up timesee Fig.790−ns
input data hold timesee Fig.750−ns
output data hold timesee Fig.70−ns
output data delay timesee Fig.7−700ns
data
valid
T
cy(SNCL)
data
valid
data
valid
MGK181
handbook, full pagewidth
SNCL
SNDA
(receiver
mode)
SNDA
(transmitter
mode)
LSB
data
valid
t
su(i)
data
valid
t
h(i)
t
d
t
h(o)(D)
Fig.7 SNERT bus interface timing.
MICROCONTROLLER BUS CONTROL (SNERT BUS)
The following control table applies (Table 5), for control via the microcontroller bus (SNERT bus, consisting of SNCL,
SNDA and VRST signals). Data communication is by writing to the PAN-IC (address 40H to 48H) and reading from it
(address 49H)
Table 5 SNERT-bus control
ADDRESS
(HEX)
40X
FUNCTION# OF BITS
1l
87 : 0definition of X1l with a resolution of 4 samples; see Fig.3 and
BIT
POSITION
REMARKS
note 1
41X
0l
87 : 0definition of X0l with a resolution of 4 samples; see Fig.3 and
note 1
42X
0r
87 : 0definition of X0r with a resolution of 4 samples; see Fig.3 and
note 1
43X
1r
87 : 0definition of X1r with a resolution of 4 samples; see Fig.3 and
note 1
44output samples
per line
87 : 0resolution of 4 luminance samples; actual #
samples = (programmed # samples + 1) × 4; note 2
1997 Jun 1011
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
ADDRESS
(HEX)
45C
FUNCTION# OF BITS
0
87 : 0constant DTO
BIT
POSITION
REMARKS
value for area I, MSB extended by zoom bit
incr
at address 48 (twos complement value); see Figs 3 and 4
46C
1
65 : 02nd derivatives for DTO
for areas II and V
incr
(twos complement value); see Figs 3 and 4
distribution16enables odd/even sample distribution; see Tables 1 to 4
47C
2
65 : 02nd derivatives for DTO
for areas III and IV
incr
(twos complement value)
test 116test bit, must be logic 0 in normal operation
notch17SECAM Y notch on/off (logic 1 = on, logic 0 = off)
48zoom bit10logic 1 = zoom, logic 0 = compress in area I
in-phase11logic 1 = shifted relation WE_IN to input data; see Fig.5
out-phase12logic 1 = shifted relation WE
/WEod to output data; see Fig.5
O
init13circuitry is initialized at VRST pulse
vrst_xfer14new settings are activated at VRST pulse
keep15compression curve is kept from last active line in field
test 216test bit, must be logic 0 in normal operation
adapt17adapt bit, must be logic 0 in normal operation
49identify read8 read bits7 : 0PAN-IC identifies by pulling all bits LOW (hardware cluck)
Notes
1. For a symmetrical bathtub curve Xnl+Xnr= output samples per line + 1.
2. WEI falling edge delay to the WEO latest sample should not be equal to the pipeline delay. This can be controlled
with the WEI length via the microcontroller.
TEST
The test mode can be chosen via pins TEST, T0 and T1.
Table 6 Test modes
PIN NAME
MODE
TESTT1T0
Functional test0X
Test mode on1X
Note
1. X = don’t care.
1997 Jun 1012
(1)
(1)
(1)
X
(1)
X
Page 13
Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
PACKAGE OUTLINE
PLCC44: plastic leaded chip carrier; 44 leads
e
D
y
40
44
1
pin 1 index
6
β
k
717
e
D
H
D
X
2939
SOT187-2
e
E
A
Z
E
28
H
E
E
A
A
1
A
e
18
k
1
v M
Z
D
A
4
B
v M
B
w M
detail X
b
p
b
1
(A )
3
L
p
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
3.05
0.12
b
0.53
0.33
0.021
0.013
b
p
1
0.81
0.66
0.032
0.026
(1)
D
16.66
16.51
0.656
0.650
(1)
E
eH
16.66
1.27
16.51
0.656
0.05
0.650
e
D
16.00
14.99
0.630
0.590
e
E
16.00
14.99
0.630
0.590
17.65
17.40
0.695
0.685
Note
1. Plastic or metal protrusions of 0.01 inches maximum per side are not included.
OUTLINE
VERSION
SOT187-2
IEC JEDEC EIAJ
112E10MO-047AC
REFERENCES
1997 Jun 1013
H
E
D
17.65
17.40
0.695
0.685
k
1.22
1.07
0.048
0.042
k
0.51
0.020
1
0.057
0.040
L
p
1.44
1.02
EUROPEAN
PROJECTION
(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
95-02-25
Page 14
Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
SOLDERING
Introduction
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”
Reflow 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 9398 510 63011).
Wave 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.
Repairing 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.
1997 Jun 1014
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Philips SemiconductorsPreliminary specification
PANorama-IC (PAN-IC)SAA4995WP
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 this 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.
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.
1997 Jun 1015
Page 16
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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 Netherlands547047/20/01/pp16 Date of release: 1997 Jun 10Document order number: 9397 750 01609
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