ASAHIKASEI
[AK8813/14]
AK8813/14
NTSC/PAL Digital Video Encoder
GENERAL DESCRIPTION
The AK8813/14 is low voltage, low power and small packaged Digital Video Encoder. It is suitable
for a STB or Digital TV. It converts ITU-R.BT601/656 standard 8- bit parallel data into analog
composite video signal, S-video in NTSC and PAL formats.
AK8813/14 supports Copy protection, Closed Captioning and Video Blanking ID(CGMS-A) and WSS.
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
•
ITU-R BT.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
•
C filtering
•
Triple 10-bit DACs
•
I
2
C Bus Interface (400kHz)
•
Closed Caption encoding (NTSC: line 21,284-SMPTE PAL: line 22,335-CCIR)
•
Macrovision Copy Protection Rev. 7.1 * (only AK8814 )
•
VBID, CGMS-A(EIAJ CPR-1024)
•
WSS
•
On-chip color bar generator
•
Low power consumption
•
2.8V to 3.3V operation CMOS Monolithic
•
48pin LQFP Package / 57pin FBGA Package
(*Note) 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.
2 x over-sampling
4 x over-sampling
•
Single 27MHz Clock (The polarity could be inverted by SYSINV pin)
Rev.00
-1-
2004/Oct
ASAHIKASEI
[AK8813/14]
Block Diagram
SELA SCL SDA CLKNV CLK HSYNC VSYNC/PD /RESET
VREFOUT VREFIN
u-P I/F (I C)
&
Register
2
Timing Generator
Macrovision
CGMS-A
WSS
VREF
Generator
IREF
Sync-Form
Generator
Luma Filter
(x 2 Interpolator)
Input Formatter
EAV Decode
Y
Delay
10-bit
DAC
Y
Data[7:0]
10-bit
DAC
Chroma
LPF Filter
(x 2 Interpolator)
Composite
4:2:2 to 4:4:4
(x 2 Interpolator)
Sub-Carrier
Generator
C
Delay
10-bit
DAC
C
DVDD DVSS
AVDD AVSS
Rev.00
-3-
2004/Oct
ASAHIKASEI
[AK8813/14]
ORDERING GUIDE
AK8813VQ: LQFP48 Non-Macrovision (Pb Free)
AK8813VG: FBGA57 Non-Macrovision
AK8813VGP: FBGA57 Non-Macrovision (Pb Free)
AK8814VQ: LQFP48 Macrovision (Pb Free)
AK8814VG: FBGA57 Macrovision (Pb Free)
Rev.00
-4-
2004/Oct
ASAHIKASEI
[AK8813/14]
PIN LAYOUT
48pin LQFP
VREFOUT
VREFIN
DVDD
AVDD
DVSS
AVSS
IREF
UD5
UD6
UD7
DVSS
SYSCLK
DVDD
UD8
DVDD
FID/VSYNC
HSYNC
DVSS
SYSINV
36 35 34 33 32 31 30 29 28 27 26 25
37
24
38
39
40
41
42
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9 10 11 12
23
22
21
20
19
18
17
16
15
14
13
UD4
UD9
UD3
D7
UD2
D6
UD1
D5
UD0
D4
CVBS
AVSS
C
AVDD
Y
AVSS
/RESET
PD
SDA
SCL
SELA
TEST
DVDD
DVSS
D3
D2
D1
D0
TEST
57pin FBGA
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
J
Bottom View
Rev.00
-5-
2004/Oct
ASAHIKASEI
[AK8813/14]
PIN/FUNCTION
48pin LQFP
No.
1
2-5,
8-11
12-13
14
15
16
17
Pin Name
UD9
D7 - D0
TEST
SELA
SCL
SDA
PD
I/O
I/O
I
I
I
I
I/O
I
Description
Test pin. Open for normal operation
27MHz 8-Bit 4:2:2 multiplexed Y,Cb,Cr Data Input.
For Rec.656 format, AK8813/14 decodes EAV.
For non-Rec.656 format (without EAV), AK8813/14 operates in Master or
Slave mode.
Test pin. Ground for normal operation
The slave address is set with this pin.
“L”:40H “H”:42H
Serial interface clock
Serial interface data
Power Down Pin. After returning from PD mode to normal operation,
RESET Sequence should be done to AK8813/14.
After this pin becomes “L”, AK8813/14 starts the internal initializing
sequence.
After initializing sequence, AK8813/14 is set NTSC mode, Rec.656
decoding mode. All DACs Off condition.
After power up, AK8813/14 must be initialized with this pin.
(27MHz Clock is necessary for reset sequence.)
Output of Luminance Signal.
Output of the Chrominance signal
Output of Composite Video signal
Output of the Internal Vref. Terminate with 0.1uF or more capacitor.
Input of the Reference Voltage
The currents flow this pin adjusts the full-scale output current of the DAC.
Connect this pin to Analog ground via a 6.8kohm resistor ( better than +/-
1% accuracy ).
Test pin. Open for normal operation
27MHz Clock Input. The polarity could be inverted by SYSINV.
Test pin. Open for normal operation
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.
Rec.656 decode mode : Output
Master mode : Output
Slave mode : Input
“L “ : data is latched with rising edge.
“H” : data is latched with falling edge.
Analog Power Supply
Digital Power Supply
Analog Ground
Digital Ground
18
/RESET
I
20
22
24
27
28
29
32-39
41
43
Y
C
COMPOSITE
VREFOUT
VREFIN
IREF
UD0-UD7
SYSCLK
UD8
FID
/VSYNC
O
O
O
O
I
O
I/O
I
I/O
45
I/O
46
48
21,26
6,31,
42,44
19,23,25
7,30,
40,47
HSYNC
SYSINV
AVDD
DVDD
AVSS
DVSS
I/O
I
P
P
G
G
Rev.00
-6-
2004/Oct
嵌入式系统
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