SAF7167AHW
YUV-to-RGB digital-to-analog converter
Rev. 01 — 29 June 2004
Product data sheet
1. General description
The SAF7167AHW is a mixed-mode designed IC containing a video data path, keying
control block, analog mixer, and a voltage output amplifier, capable of converting digital
video data to analog RGB video, and then mixing video and external analog RGB inputs.
The video data path contains a data re-formatter, YUV-to-RGB colour space matrix as well
as triple DACs for video data processing. An analog mixer performs multiplexing between
DAC outputs of the video path and external analog RGB inputs.
The final analog outputs are buffered with built-in voltage output amplifiers to provide the
direct driving capability for a 150
Ω
load. See the overall block diagram.
The operation of SAF7167AHW is controlled via the I
2
C-bus.
2. Features
s
s
s
s
s
s
s
On-chip mixing of digital video data and analog RGB signals
Supports video input format of YUV 4 : 2 : 2, 4 : 1 : 1, 2 : 1 : 1 and RGB 5 : 6 : 5
Video input rate up to 66 MHz
Allows for both binary and twos complement video input data
Triple 8-bit DACs for video output
Built-in voltage output amplifier
Provides keying control with external key and internal 8-bit, 2
×
8-bit and 3
×
8-bit pixel
colour key
s
Programmable via the I
2
C-bus
s
5 V CMOS device; HTQFP48 package.
3. Quick reference data
Table 1:
Symbol
V
DDD
V
DDA
T
amb
Quick reference data
Parameter
digital supply voltage
analog supply voltage
ambient temperature
Conditions
Min
4.75
4.75
−40
Typ
5.0
5.0
-
Max
5.25
5.25
+85
Unit
V
V
°C
Philips Semiconductors
SAF7167AHW
YUV-to-RGB digital-to-analog converter
4. Ordering information
Table 2:
Ordering information
Package
Name
SAF7167AHW
HTQFP48
Description
plastic thermal enhanced thin quad flat package; 48 leads;
body 7
×
7
×
1 mm; exposed die pad
Version
SOT545-1
Type number
5. Block diagram
B_IN R_IN
G_IN
C_REF(H)
36
29 31 33
MIXER
YUV[7:0]
38 to 45
8
46 to 48,
1 to 5
8
9
MIXER
OPAMP
28
B_OUT
RE-
FORMATTER
YUV-
TO-
RGB
MATRIX
MUX
8-BIT
DAC
(3×)
MIXER
OPAMP
30
G_OUT
OPAMP
32
R_OUT
V
DDD
V
SSD
7
8
V
SSA2
V
DDA2
26
27
V
SSA1
V
DDA1
34
35
UV[7:0]
HREF
SDA
SCL
RES_N
22
23
24
I
2
C-BUS
CONTROL
SAF7167AHW
CLOCK
GENERATOR
KEYING CONTROL
8
11
AP
12
SP
25, 37
n.c.
6
VCLK
10
PCLK
21
EXTKEY
13 to 20
001aaa390
P[7:0]
Fig 1. Block diagram.
9397 750 12667
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 01 — 29 June 2004
2 of 21
Philips Semiconductors
SAF7167AHW
YUV-to-RGB digital-to-analog converter
6. Pinning information
6.1 Pinning
45 YUV[0]
44 YUV[1]
43 YUV[2]
42 YUV[3]
41 YUV[4]
40 YUV[5]
39 YUV[6]
38 YUV[7]
48 UV[5]
47 UV[6]
46 UV[7]
UV[4]
UV[3]
UV[2]
UV[1]
UV[0]
VCLK
V
DDD
V
SSD
HREF
37 n.c.
36 C_REF(H)
35 V
DDA1
34 V
SSA1
33 R_IN
32 R_OUT
31 G_IN
30 G_OUT
29 B_IN
28 B_OUT
27 V
DDA2
26 V
SSA2
25 n.c.
RES_N 24
001aaa391
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
1
2
3
4
5
6
7
8
9
SAF7167AHW
PCLK 10
AP 11
SP 12
P[7] 13
P[6] 14
P[5] 15
P[4] 16
P[3] 17
P[2] 18
P[1] 19
P[0] 20
EXTKEY 21
SDA 22
SCL 23
Fig 2. Pin configuration.
6.2 Pin description
Table 3:
Symbol
UV[4]
UV[3]
UV[2]
UV[1]
UV[0]
VCLK
V
DDD
V
SSD
HREF
PCLK
AP
SP
9397 750 12667
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Type
[1]
I
I
I
I
I
I
S
S
I
I
I
I
Description
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
video clock input
digital supply voltage
digital ground
horizontal reference input signal
pixel clock input
test pin, normally connected to ground
test pin, normally connected to ground
Product data sheet
Rev. 01 — 29 June 2004
3 of 21
Philips Semiconductors
SAF7167AHW
YUV-to-RGB digital-to-analog converter
Pin description
…continued
Pin
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Type
[1]
I
I
I
I
I
I
I
I
I
I/O
I
I
-
S
S
O
I
O
I
O
I
S
S
S
-
I
I
I
I
I
I
I
I
Description
pixel bus input 7 (for keying control)
pixel bus input 6 (for keying control)
pixel bus input 5 (for keying control)
pixel bus input 4 (for keying control)
pixel bus input 3 (for keying control)
pixel bus input 2 (for keying control)
pixel bus input 1 (for keying control)
pixel bus input 0 (for keying control)
external key signal input
I
2
C-bus data line
I
2
C-bus clock line
resetting the I
2
C-bus (active LOW)
not connected
analog ground 2
analog supply voltage 2
analog blue signal output
analog blue signal input
analog green signal output
analog green signal input
analog red signal output
analog red signal input
analog ground 1
analog supply voltage 1
de-coupling capacitor for internal reference voltage
(2.25 V)
not connected
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
digital video Y or UV (of YUV format 2 : 1 : 1) input
data, or digital G and B input data
Table 3:
Symbol
P[7]
P[6]
P[5]
P[4]
P[3]
P[2]
P[1]
P[0]
EXTKEY
SDA
SCL
RES_N
n.c.
V
SSA2
V
DDA2
B_OUT
B_IN
G_OUT
G_IN
R_OUT
R_IN
V
SSA1
V
DDA1
C_REF(H)
n.c.
YUV[7]
YUV[6]
YUV[5]
YUV[4]
YUV[3]
YUV[2]
YUV[1]
YUV[0]
9397 750 12667
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 01 — 29 June 2004
4 of 21
Philips Semiconductors
SAF7167AHW
YUV-to-RGB digital-to-analog converter
Pin description
…continued
Pin
46
47
48
Type
[1]
I
I
I
Description
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
digital video UV (of YUV format 4 : 1 : 1 and 4 : 2 : 2)
input data, or digital G and R input data
Table 3:
Symbol
UV[7]
UV[6]
UV[5]
[1]
I = input; I/O = input or output; O = output; S = supply.
7. Functional description
The SAF7167AHW contains a video data path, 3 analog mixers and voltage output
amplifiers for the RGB channels respectively, a keying control block as well as an I
2
C-bus
control block.
7.1 Video data path
The video data path includes a video data re-formatter, a YUV-to-RGB colour space
conversion matrix, and triple 8-bit DACs.
7.1.1 Re-formatter
The re-formatter de-multiplexes the different video formats YUV 4 : 1 : 1, 4 : 2 : 2 or
2 : 1 : 1 to internal YUV 4 : 4 : 4, which can then be processed by the RGB matrix. The
pixel byte sequences of those video input formats are shown in
Table 4
to
Table 7.
Table 4:
Input
YUV0 (LSB)
YUV1
YUV2
YUV3
YUV4
YUV5
YUV6
YUV7 (MSB)
UV0 (LSB)
UV1
UV2
UV3
UV4
UV5
UV6
UV7 (MSB)
Y data
UV data
9397 750 12667
Pixel byte sequence of 4 : 2 : 2
Pixel byte sequence of 4 : 2 : 2
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
0
0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
1
0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
2
2
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
3
2
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U0
U1
U2
U3
U4
U5
U6
U7
4
4
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
V0
V1
V2
V3
V4
V5
V6
V7
5
4
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 01 — 29 June 2004
5 of 21
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