ASAHIKASEI [AK8811/12]
Rev.1.1
- 1 - 2000/01
AK8811/12
NTSC/PAL Digital Video Encoder
GENERAL DESCRIPTION
The AK8811 and AK8812 are low voltage, low power and small packaged Digital Video Encoder.
They are suitable for a portable DVD or VCD player. They convert ITU-R.BT601/656 standard 8-
bit parallel data into analog composite video, S-Video or analog component signals Y/Cb/Cr in
NTSC and PAL formats.
AK8812 and AK8811 support Macrovision Copy Protection Rev.7.1(only AK8812), Closed
captioning and Video Blanking ID(CGMS). These functions are controlled by high-speed I
2
C Bus
interface.
FEATURES
NTSC-M, PAL-B,D,G,H,I,M,N encoding.
Simultaneous composite video signal and S-video signal outputs
Y/Cb/Cr Component output (Based on EIAJ Guideline)
CCIR-656 4:2:2 8-bit Parallel Input
- EAV Decoding
Master/Slave Operation
- Digital Field Sync I/O
- Digital Vertical/Horizontal Sync I/O
Y filtering 2 x over-sampling
C filtering 4 x over-sampling
Single 27MHz Clock (The polarity could be inverted by SYSINV pin)
Triple 10-bit DACs
I
2
C Interface (400kHz)
Closed Caption encoding (NTSC: line 21,284-SMPTE PAL: line 21,334-CCIR)
Macrovision Copy Protection Rev. 7.1* (Only for AK8812)
VBID, CGMS(EIAJ CPR-1024)
On-chip Color bar generator
Low Power Consumption
3.3V only, CMOS Monolithic
48pin LQFP Package
* This device is protected by U.S. patent numbers 4,631,603, 4,577,216, and 4,819,098, and other intellectual
rights. The use of Macrovision's copy protection technology in the device must be authorized by Macrovision and
is intended for home and other limited pay-per -view use only, unless otherwise authorized in written by
Macrovision. Reverse engineering or disassembly is prohibited.
ASAHI KASEI
[AK8811/12]
Rev.1.1 2000/01
4
PIN/FUNCTION
No.
Pin Name
I/O
Description
2-5,
8-11
D7 - D0
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.
41
SYSCLK
I
27MHz Clock Input. The polarity could be inverted by
SYSINV.
48
SYSINV
I
"L " : data is latched with rising edge.
"H" : data is latched with falling edge.
18
/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.
45
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.
46
HSYNC
I/O
Rec.656 decode mode : Output
Master mode : Output
Slave mode : Input
15
SCL
I
Serial interface clock
16
SDA
I/O
Serial interface data
14
SELA
I
The slave address is set with this pin.
"L":40H "H":42H
27
VREFOUT
O
Output of the Internal Vref. Terminate with 0.1uF or
more capacitor.
28
VREFIN
I
Input of the Reference Voltage
29
IREF
O
The currents flow this pin adjusts the full-scale
output current of the DAC.
24
COMPOSITE/U
O
Output of Composite Video signal or component U
22
CHROMA/V
O
Output of the C signal or component V
20
Y
O
Output of Luminance Signal.
21,26
AVDD
P
Analog +3.3V
6,31,
42,44
DVDD
P
Digital +3.3V
19,23,25
AVSS
G
Analog Ground
7,17,47,
40,30
DVSS
G
Digital Ground
12,13
TEST1
TEST2
I
Test pin. Ground for normal operation
1, 32-
39,43
PD[9:0]
I/O
Test pin. Open for normal operation
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