Philips Semiconductors
Product specification
Advanced Auto Control Function (A2CF)
FEATURES
•
One chip full digital Auto Focus (AF), Auto Exposure
(AE) and Auto White Balance (AWB)
•
Possible to use NTSC and PAL CCD with horizontal
resolution of 510, 670, 720 or 768 pixels
•
No manual adjustment
•
One microprocessor system commonly used with
CAMera Digital Signal Processor (CAMDSP)
SAA9750H
•
8-bit parallel microprocessor interface
•
LQFP64 package (0.5 mm pitch)
•
Single 3 V power supply.
Auto Focus features
•
Video AF system
•
Two windows system (a small centre and large window)
•
The window size and place are microprocessor
controlled
•
Including 5
th
order IIR digital high-pass filter
•
Line peak accumulation in the large window
•
High-pass filter’s output accumulation in one field.
Auto White Balance features
•
Mono colour detection
Auto Exposure features
•
5 windows accumulation
SAA9740H
•
Calculation of white-clip by centre window
•
Possible to control size and place of the centre windows
by the light condition with microprocessor.
•
Accumulation of UV data in the corresponding UV
quadrant
•
Green and Magenta elimination gate
•
Luminance gate for detecting white
•
UV limiter
•
White-clip detection/counter.
GENERAL DESCRIPTION
The Advanced Auto Control Function (A2CF) is to be used
for a colour CCD camera system. This IC can realize AWB,
AF and AE with a microprocessor. This device consists of
an input data selector, a parallel 8-bit microprocessor
interface, a data accumulator, a window generator, a
command decoder and AWB, AF, AE for each processing
block.
QUICK REFERENCE DATA
SYMBOL
V
DD
V
IL
V
IH
V
OL
V
OH
T
amb
PARAMETER
digital supply voltage (pins 6, 18 and 47)
LOW level digital input voltage
HIGH level digital input voltage
LOW level digital output voltage
HIGH level digital output voltage
operating ambient temperature
0
0.7V
DD
−
−20
MIN.
2.7
−
−
−
−
TYP.
3.0
MAX.
3.3
0.3V
DD
V
DD
0.5
−
+70
V
V
V
V
V
°C
UNIT
V
DD
−
0.5
−
ORDERING INFORMATION
TYPE
NUMBER
SAA9740H
PACKAGE
NAME
LQFP64
DESCRIPTION
plastic low profile quad flat package; 64 leads; body 10
×
10
×
1.4 mm
VERSION
SOT314-2
1996 Oct 10
2
Philips Semiconductors
Product specification
Advanced Auto Control Function (A2CF)
PINNING
SYMBOL
Y3
TSTIN1
TSTIN2
TSTIN3
TST1
V
DD1
V
SS1
UV_SEL
UV0
UV1
UV2
UV3
UV4
UV5
UV6
UV7
WCLIP
V
DD2
V
SS2
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
RSTB
RDB
WRB
ASTB
WDINT
VD
HD
HSYNC
WDMNT
LWDB
TSTOUT6
TSTOUT7
CLK2OUT
1996 Oct 10
PIN
1
2
3
4
5
6
7
8
9
10
11
12
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
input
input
input
input
input
−
−
input
input
input
input
input
input
input
input
input
input
−
−
bidirectional
bidirectional
bidirectional
bidirectional
bidirectional
bidirectional
bidirectional
bidirectional
input
input
input
input
output
input
input
input
output
output
output
output
output
TYPE
input pin for test
input pin for test
input pin for test
input pin for test
digital supply voltage
ground
UV select input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP) (LSB)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP)
UV input from SAA9750H (CAMDSP) (MSB)
white-clip input from SAA9750H (CAMDSP)
digital supply voltage
ground
microprocessor interface (MSB)
microprocessor interface
microprocessor interface
microprocessor interface
microprocessor interface
microprocessor interface
microprocessor interface
microprocessor interface (LSB)
system reset
read control from microprocessor
write control from microprocessor
address set from microprocessor
window interrupt
V-drive signal input
H-drive signal input
HSYNC input
window monitor for test (open-drain)
large window for test (open-drain)
output pin for test
output pin for test
output pin of internal clock (open-drain)
4
DESCRIPTION
Y input from SAA9750H (CAMDSP) (LSB)
SAA9740H
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