AK8855 Datasheet, PDF (28/81 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Decoder

[ASAHI KASEI]
AK8855
Macrovision Decoding
When Macrovision Copy Protect signal is input, the AK8855 decodes the added Macrovision information and
stores the result at Macrovision Status Register ( R/W ) [ Sub Address 0x11 ]. Configuration of Macrovision
Status Register is as follows.
Sub Address 0x11
bit 7
bit 6
Reserved PSPDET
bit 5
AGCPDET
bit 4
BPPDET
bit 3
SYNCRED
bit 2
CSTYPE
bit 1
CSDET
bit 0
AGCDET
[ AGCDET ]-bit
When Macrovision AGC process is recognized, this bit becomes “1”.
[AGCDET]-bit
Status of Macrovision Detection
0
AGC Process in not detected
1
AGC Process is detected
Condition
[ CSDET ]-bit
When Macrovision Color Stripe Process is recognized, this bit becomes “1”.
[CSDET]-bit
Status of Macrovision Detection
0
Color Stripe Process is not detected
1
Color Stripe Process is detected
Condition
[ CSTYPE ]-bit
When CSDET-bit is “1”, Color Stripe Process type is indicated.
[CSTYPE]-bit
Status of Macrovision Detection
0
Color Stripe Type 2 is set
1
Color Stripe Type 3 is set
Condition
[ SYNCRED ]-bit
When SYNCRED-bit is “1”, it indicates that Sync Reduction has been detected.
[SYNCRED]-bit
Status of Macrovision Detection
0
-
1
Sync Reduction is detected
Condition
[ BPPDET ]-bit
When BPPDET-bit is “1”, it indicates that “ End of Field Back Porch Pulse “ has been detected.
[BPPDET]-bit
Status of Macrovision Detection
Condition
0
-
1
End of Field Back Porch Pulse is detected
[ AGCPDET ]-bit
When AGCPDET-bit is “1”, it indicates that AGC Pulse has been detected.
[AGCPDET]-bit
Status of Macrovision Detection
0
-
1
AGC Pulse is detected
Condition
[ PSPDET ]-bit
When PSPDET-bit is “1”, it indicates that Pseudo Sync Pulse has been detected.
[PSPDET]-bit
Status of Macrovision Detection
0
-
1
Pseudo Sync Pulse is detected.
Condition
MS0319-E-03
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