AK8811 Datasheet, PDF (4/36 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
[AK8811/12]
PIN/FUNCTION
No.
2-5,
8-11
41
48
18
45
46
15
16
14
27
28
29
24
Pin Name
I/O Description
D7 - D0
SYSCLK
SYSINV
I _{27MHz 8-Bit 4:2:2 multiplexed Y,Cb,Cr Data Input.}
For Rec.656 format, AK8811/12 decodes EAV.
For non-Rec.656 format (without EAV), AK8811/12
operates in Master or Slave mode.
I _{27MHz Clock Input. The polarity could be inverted by}
SYSINV.
I
“L “ : data is latched with rising edge.
“H” : data is latched with falling edge.
/RESET
I After this pin becomes “L”, AK8811/12 starts the
internal initializing sequence.
After initializing sequence, AK8811/12 is set NTSC
mode, Rec.656 decoding mode. All DACs Off
condition.
FID
/VSYNC
I/O Either of FID or VSYNC selected by the register.
Rec.656 decode mode :Output
Master mode : Output
Slave mode : Input
FID shows that “L” is odd field and ”H” is even field.
HSYNC
I/O Rec.656 decode mode : Output
Master mode : Output
Slave mode : Input
SCL
I Serial interface clock
SDA
I/O Serial interface data
SELA
I The slave address is set with this pin.
“L”:40H “H”:42H
VREFOUT
VREFIN
O Output of the Internal Vref. Terminate with 0.1uF or
more capacitor.
I _{Input of the Reference Voltage}
IREF
COMPOSITE/U
O _{The currents flow this pin adjusts the full-scale}
output current of the DAC.
O _{Output of Composite Video signal or component U}
22 CHROMA/V
20 Y
O ^{Output of the C signal or component V}
O Output of Luminance Signal.
21,26
6,31,
42,44
19,23,25
7,17,47,
40,30
12,13
1, 32-
39,43
AVDD
DVDD
AVSS
DVSS
TEST1
TEST2
PD[9:0]
P Analog +3.3V
P Digital +3.3V
G Analog Ground
G Digital Ground
I _{Test pin. Ground for normal operation}
I/O _{Test pin. Open for normal operation}
Rev.1.1
4
2000/01