Philips saa7165 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

SAA7165

Video Enhancement and
Digital-to-Analog processor
(VEDA2)

Product specification
Supersedes data of May 1995
File under Integrated Circuits, IC22

1996 Aug 20

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

FEATURES

• CMOS circuit to enhance video data and to convert
luminance and colour-difference signals from
digital-to-analog

• Digital Colour Transient Improvement block (DCTI) to
increase the sharpness of colour transitions.
The improved pin-compatible SAA7165 can supersede
the SAA9065

• 16-bit parallel input for 4 : 1 : 1 and 4:2:2 YUV data

• Data clock input LLC (Line-Locked Clock) for a data rate

up to 36 MHz

• 8-bit luminance and 8-bit multiplexed colour-difference
formats (7-bit formats optional)

• MC input to support various clock and pixel rates

• Formatting YUV input data; 4 :2:2format,

4:1:1format and filter characteristics selectable

• HREF input to determine the active line (number of
pixels)

• Controllable peaking of luminance signal

• Coring stage with controllable threshold to eliminate

• Interpolation filter suitable for both formats to increase

• Polarity of colour-difference signals selectable

• All functions controlled via I

• Separate digital-to-analog converters (9-bit resolution

• 1 V (p-p)/75 Ω outputs realized by two resistors

• No external adjustments.

noise in luminance signal

the data rate in chrominance path

2

C-bus

for Y; 8-bit for colour-difference signals)

SAA7165

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

DDD

V

DDA

I

DD(tot)

V

IL

V

IH

f

LLC

V

o(p-p)

R

L

digital supply voltage 4.5 5 5.5 V
analog supply voltage 4.75 5 5.25 V
total supply current − tbf − mA
LOW-level input voltage on YUV-bus −0.5 − +0.8 V
HIGH-level input voltage on YUV-bus 2 − V

DDD

+ 0.5 V
input data rate −−36 MHz
output signals Y, (R − Y) and (B − Y) (peak-to-peak value) − 2 − V
output load resistance 125 −− Ω

ILE DC integral linearity error in output signal (8-bit data) −−1 LSB
DLE DC differential error in output signal (8-bit data) −−0.5 LSB
T

amb

operating ambient temperature range 0 − 70 °C

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

SAA7165WP PLCC44 plastic leaded chip carrier; 44 leads SOT187-2

1996 Aug 20 2

This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in

_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in

white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...

1996 Aug 20 3

BLOCK DIAGRAM

Video Enhancement and Digital-to-Analog

processor (VEDA2)

Philips Semiconductors Product specification

YUV-bus

I2C-bus

Y7 to Y0

UV7 to

UV0

MC

LLC

HREF

RESET

SCL
SDA

8

8

21 to 14

11 to 4

24
25

26
27

28

29

V

DDD1

12

FORMATTER

data clock

FORMATTER

TIMING

CONTROL

I2C-BUS

CONTROL

13
V

SSD1

UV

DDA1

Y

U

V

3
SUB

V
37

DATA

SWITCH

V

DDD2

31

Y

30
V

SSD2

PEAKING

AND

CORING

INTERPOLATION

FILTER

TEST

CONTROL

22
AP

23
SP

V
32

DCTI

DDA2

SAA7165

34
V

SSA1

V

DDA3

40

CUR

41 42

DAC 3

DAC 2

DAC 1

35
V

SSA2

V

DDA4

38
V

SSA3

25 Ω

25 Ω

25 Ω

2

C

39

36
44

43
33

Y

Y

1

REFL

Y

(B − Y)
REFL

UV

C

UV

(R − Y)

MEH464

Fig.1 Block diagram.

handbook, full pagewidth

SAA7165

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

PINNING

SYMBOL PIN DESCRIPTION

REFL

Y

C

Y

SUB 3 substrate (connected to V

1 low reference of luminance DAC (connected to V
2 capacitor for luminance DAC (high reference)

)

SSA1

UV0 4 UV signal input bit UV7 (digital colour-difference signal)
UV1 5 UV signal input bit UV6 (digital colour-difference signal)
UV2 6 UV signal input bit UV5 (digital colour-difference signal)
UV3 7 UV signal input bit UV4 (digital colour-difference signal)
UV4 8 UV signal input bit UV3 (digital colour-difference signal)
UV5 9 UV signal input bit UV2 (digital colour-difference signal)
UV6 10 UV signal input bit UV1 (digital colour-difference signal)
UV7 11 UV signal input bit UV0 (digital colour-difference signal)
V
V

DDD1
SSD1

12 +5 V digital supply voltage 1

13 digital ground 1 (0 V)
Y0 14 Y signal input bit Y7 (digital luminance signal)
Y1 15 Y signal input bit Y6 (digital luminance signal)
Y2 16 Y signal input bit Y5 (digital luminance signal)
Y3 17 Y signal input bit Y4 (digital luminance signal)
Y4 18 Y signal input bit Y3 (digital luminance signal)
Y5 19 Y signal input bit Y2 (digital luminance signal)
Y6 20 Y signal input bit Y1 (digital luminance signal)
Y7 21 Y signal input bit Y0 (digital luminance signal)
AP 22 connected to ground (action pin for testing)
SP 23 connected to ground (shift pin for testing)
MC 24 data clock CREF (e.g. 13.5 MHz); at MC = HIGH, the LLC divider-by-two is inactive
LLC 25 line-locked clock signal (LL27 = 27 MHz)
HREF 26 data clock for YUV data inputs (for active line 768Y or 640Y long)
RESET 27 reset input (active LOW)
SCL 28 I
SDA 29 I
V

SSD2

V

DDD2

V

DDA1

2

C-bus clock line

2

C-bus data line
30 digital ground 2 (0 V)
31 +5 V digital supply voltage 2
32 +5 V analog supply voltage for buffer of DAC 1

(R − Y) 33 ±(R − Y) output signal (analog signal)
V
V

SSA1
SSA2

34 analog ground 1 (0 V)
35 analog ground 2 (0 V)

(B − Y) 36 ±(B − Y) output signal (analog colour-difference signal)
V
V

DDA2
SSA3

37 +5 V analog supply voltage for buffer of DAC 2
38 analog ground 3 (0 V)

Y 39 Y output signal (analog luminance signal)
V

DDA3

40 +5 V analog supply voltage for buffer of DAC 3

SSA1

)

SAA7165

1996 Aug 20 4

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

SYMBOL PIN DESCRIPTION

CUR 41 current input for analog output buffers
V

DDA4

C

UV

REFL

UV

handbook, full pagewidth

42 supply and reference voltage for the three DACs
43 capacitor for chrominance DACs (high reference)
44 low reference of chrominance DACs (connected to V

UV2
6

UV1
5

UV0
4

SUB

CYREFLYREFLUVC

3

2

1

UV

44

43

DDA4

V

42

SSA1

)

CUR
41

SAA7165

DDA3

V
40

V

DDD1

V

SSD1

UV3
UV4
UV5
UV6
UV7

Y0
Y1
Y2
Y3

7
8

9
10
11
12
13
14
15
16
17

18

19

20

Y4

Y5

Y6

SAA7165

21
Y7

22
AP

23
SP

24
MC

25

LLC

26

HREF

27

RESET

28

SCL

39
38
37
36
35
34
33
32
31
30
29

MEH465

Y
V

SSA3

V

DDA2

(B − Y)
V

SSA2

V

SSA1

(R − Y)
V

DDA1

V

DDD2

V

SSD2

SDA

Fig.2 Pin configuration.

1996 Aug 20 5

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

FUNCTIONAL DESCRIPTION

The CMOS circuit SAA7165 processes digital YUV-bus
data up to a data rate of 36 MHz. The data inputs Y7 to Y0
and UV7 to UV0 (see Fig.1) are provided with 8-bit data.
The data of digital colour-difference signals U and V are in
a multiplexed state (serial in 4 : 2:2or4:1:1format;
Tables 2 and 3).

Data is read with the rising edge of LLC (Line-Locked
Clock) to achieve a data rate of LLC at MC = HIGH only. If
MC is supplied with the frequency CREF (1⁄2LLC for
example), data is read only at every second rising edge
(see Fig.3).

The 7-bit YUV input data are also supported by means of
bit R78 (R78 = 0). Additionally, the luminance data format
is converted for internal use into a two´s complement
format by inverting the MSB. The Y input byte
(bits Y7 to Y0) represents luminance information; the UV
input byte (bits UV7 to UV0) represents one of the two
digital colour-difference signals in 4:2:2format
(Table 2).

The HREF input signal (HREF = HIGH) determines the
start and the end of an active line (see Fig.3) and the
number of pixels respectively. The analog output Y is
blanked at HREF = LOW, the (B − Y) and (R − Y) outputs
are in a colourless state. The blanking level can be set with
bit BLV. The SAA7165 is controllable via the I

2

C-bus.

SAA7165

Formatting Y and UV

The input data formats are formatted into the internally
used processing formats (separate for 4 :2:2 and
4:1:1formats). The IFF, IFC and IFL bits control the
input data format and determine the right interpolation filter
(see Figs 10 to 13).

Peaking and coring

Peaking is applied to the Y signal to compensate several
bandwidth reductions of the external pre-processing.
Y signals can be improved to obtain a better sharpness.
There are the two switchable bandpass filters
BF1 and BF2 controlled via the I
BP0 and BFB. Thus, a frequency response is achieved in
combination with the peaking factor K (Figs 5 to 9;
K is determined by the bits BFB, WG1 and WG0).

The coring stage with controllable threshold (4 states
controlled by CO1 and CO0 bits) reduces noise
disturbances (generated by the bandpass gain) by
suppressing the amplitude of small high-frequent signal
components. The remaining high-frequent peaking
component is available for a weighted addition after
coring.

2

C-bus by the bits BP1,

Table 1 LLCandMC configuration modes in DMSD applications (note1)

PIN INPUT SIGNAL DESCRIPTION

LLC LLC (LL27) The data rate on YUV-bus is half the clock rate on pin LLC, e.g. in
MC CREF
LLC LLC (LL27) The data rate on YUV-bus must be identical to the clock rate on pin LLC,
MC MC = HIGH
LLC LLC (LL27) The data rate on YUV-bus must be identical to the clock rate on pin LLC,
MC MC = HIGH

Note

1. YUV data are only latched with the rising edge of LCC at MC = HIGH.

1996 Aug 20 6

SAA7151B, SAA7191 and SAA7191B single scan operation.

e.g. in double scan applications.

e.g. SAA9051 single scan operation.

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog

SAA7165

processor (VEDA2)

Table 2 Data format 4:2:2

INPUT PIXEL BYTE SEQUENCE (4 :2:2FORMAT)

Y0 (LSB) Y0 Y0 Y0 Y0 Y0 Y0
Y1 Y1 Y1 Y1 Y1 Y1 Y1
Y2 Y2 Y2 Y2 Y2 Y2 Y2
Y3 Y3 Y3 Y3 Y3 Y3 Y3
Y4 Y4 Y4 Y4 Y4 Y4 Y4
Y5 Y5 Y5 Y5 Y5 Y5 Y5
Y6 Y6 Y6 Y6 Y6 Y6 Y6
Y7 (MSB) Y7 Y7 Y7 Y7 Y7 Y7
UV0 (LSB) U0 V0 U0 V0 U0 V0
UV1 U1 V1 U1 V1 U1 V1
UV2 U2 V2 U2 V2 U2 V2
UV3 U3 V3 U3 V3 U3 V3
UV4 U4 V4 U4 V4 U4 V4
UV5 U5 V5 U5 V5 U5 V5
UV6 U6 V6 U6 V6 U6 V6
UV7 (MSB) U7 V7 U7 V7 U7 V7
Y frame 012345
UV frame 0 2 4

Table 3 Data format 4:1:1

INPUT PIXEL BYTE SEQUENCE (4 :1:1FORMAT)

Y0 Y0 Y0 Y0 Y0 Y0 Y0 Y0 Y0
Y1 Y1 Y1 Y1 Y1 Y1 Y1 Y1 Y1
Y2 Y2 Y2 Y2 Y2 Y2 Y2 Y2 Y2
Y3 Y3 Y3 Y3 Y3 Y3 Y3 Y3 Y3
Y4 Y4 Y4 Y4 Y4 Y4 Y4 Y4 Y4
Y5 Y5 Y5 Y5 Y5 Y5 Y5 Y5 Y5
Y6 Y6 Y6 Y6 Y6 Y6 Y6 Y6 Y6
Y7 Y7 Y7 Y7 Y7 Y7 Y7 Y7 Y7
UV0 00000000
UV1 00000000
UV2 00000000
UV3 00000000
UV4 V6 V4 V2 V0 V6 V4 V2 V0
UV5 V7 V5 V3 V1 V7 V5 V3 V1
UV6 U6 U4 U2 U0 U6 U4 U2 U0
UV7 U7 U5 U3 U1 U7 U5 U3 U1
Y frame 01234567
UV frame 0 4

1996 Aug 20 7

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

handbook, full pagewidth

LL27

(LLC)

CREF

internal
bus clock
(LLC2)

HREF

Byte number for pixels:

Y signal

50 Hz

U and V signal

Y signal

60 Hz

U and V signal

start of
active line

0

U0

0

U0

1

V0

1

V0

2

U2

2

U2

a. Start of active line.

V2

V2

SAA7165

3

3

U4

U4

4

4

V4

V4

5

5

U6

U6

6

6

7

V6

7

V6

MEH268

handbook, full pagewidth

LL27

(LLC)

CREF

internal
bus clock
(LLC2)

HREF

Byte number for pixels:

Y signal

50 Hz

U and V signal

Y signal

60 Hz

U and V signal

714

U714

714

U714

715

V714

715

V714

716

U716

716

U716

717

V716

717

V716

b. End of active line.

718

U718

718

U718

end of
active line

719

V718

719

V718

MEH269

Fig.3 Line control by HREF for 4 :2:2format, CREF = 13.5 MHz; HREF = 720 pixel; 50 and 60 Hz field.

1996 Aug 20 8

Philips Semiconductors Product specification

Video Enhancement and Digital-to-Analog
processor (VEDA2)

Interpolation

The chrominance interpolation filter consists of various
filter stages, multiplexers and de-multiplexers to increase
the data rate of the colour-difference signals by a factor of
2 or 4. The switching of the filters by the bits IFF, IFC and
IFL is described previously. Additional signal samples with
significant amplitudes between two consecutive signal
samples of the low data rate are generated.
The time-multiplexed U and V samples are stored in
parallel for converting.

Data switch

The digital signals are adapted to the conversation range.
U and V data have 8-bit formats again; Y can have 9 bits
dependent on peaking. Blanking and switching to
colourless level is applied here. Bits can be inverted by
INV-bit to change the polarity of colour-difference output
signals.

Digital Colour Transient Improvement (DCTI)

The DCTI circuit improves the transition behaviour of the
UV colour-difference signals. As the CVBS signal allows
for a 4:1:1bandwidth representation only, the DCTI
improves the transients to the same performance as
signals coming from a 4:2:2source, or even more.

SAA7165

In order to obtain the point of inflection, the second
derivative of the signal is calculated. The improved
transition is centred with respect to the point of inflection of
the original signal. Thus, there is no horizontal shift of the
resulting signal.

The transition area length to be improved is controlled via

2

I

C-bus by the bits LI1 and LI0 (Table 5); the sensitivity of
the DCTI block is controlled by the bits GA1 and GA0.
The CMO bit controls the colour detail sensitivity. It should
be set to logic 1 (ON) if the video signal contains fine
colour details (recommended operation mode).

Digital-to-Analog Converters (DACs)

Conversion is separate for Y, U and V. The converters use
resistor chains with low-impedance output buffers.
The minimum output voltage is 200 mV to reduce integral
non-linearity errors. The analog signal, without load on
output pin, is between 0.2 and 2.2 V floating.
An application for 1 V/75 Ω on outputs is shown in Fig.14.

Each digital-to-analog converter has its own supply and
ground pins suitable for decoupling. The reference
voltage, supplying the resistor chain of all three DACs, is
the supply voltage V

0.3 mA; a larger current improves the bandwidth but
increases the integral non-linearity.

. The current into pin 41 is

DDA4

2

C-bus format

I

2

Table 4 I

S slave address A subaddress A data 0 A ... data n A P

Notes

1. S = START condition.

2. Slave address = 1011 111X.

3. A = acknowledge; generated by the slave.

4. Subaddress = subaddress byte (Table 5);
If more than 1 byte of DATA is transmitted, then auto-increment of the subaddress is performed.

5. Data = data byte (Table 5).

6. P = STOP condition.

7. X = R/
a) X = 0; order to write (the circuit is slave receiver).
b) X = 1; order to read (the circuit is slave transmitter).

C-bus format; see notes 1 to 7

W control bit:

1996 Aug 20 9