![Xilinx LogiCORE IP Скачать руководство пользователя страница 68](http://html2.mh-extra.com/html/xilinx/logicore-ip/logicore-ip_user-manual_3378198068.webp)
68
www.xilinx.com
Video Scaler v4.0 User Guide
UG805 March 1, 2011
Chapter 9:
Performance
•
CyclesPerOutputFrame – This is the number of cycles the scaler requires to generate
one output frame, of multiple components. The final calculation depends upon the
chroma format (and, for YC4:2:2 only, the filter configuration), and can be
summarized as:
For 4:4:4:
CyclesPerOutputFrame =
Max [
(output_ ProcessingOverheadPerLine)*output_v_size,
(input_ ProcessingOverheadPerLine)*input_v_size
]
+ FrameProcessingOverhead
For 4:2:2 dual-engine:
CyclesPerOutputFrame =
Max [
(output_ (ProcessingOverheadPerLine*2))*output_v_size,
(input_ (ProcessingOverheadPerLine*2))*input_v_size
]
+ FrameProcessingOverhead
For 4:2:2 single-engine:
CyclesPerOutputFrame =
Max [
((output_h_size*2) +
(ProcessingOverheadPerLine*3))*output_v_size,
((input_h_size*2) + (ProcessingOverheadPerLine*3))*input_v_size
]
+ FrameProcessingOverhead
For 4:2:0:
CyclesPerOutputFrame =
Max [
((output_h_size*2) +
(ProcessingOverheadPerLine*3))*output_v_size,
((input_h_size*2) + (ProcessingOverheadPerLine*3))*input_v_size
]
+ FrameProcessingOverhead
It is then necessary to decide the minimum 'clk' frequency according to this calculation:
MinF'clk' = FFrameIn x CyclesPerOutputFrame
Содержание LogiCORE IP
Страница 1: ...LogiCORE IP Video Scaler v4 0 User Guide UG805 March 1 2011...
Страница 6: ...Video Scaler v4 0 User Guide www xilinx com UG805 March 1 2011...
Страница 14: ...14 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Preface About This Guide...
Страница 18: ...18 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Chapter 1 Introduction...
Страница 20: ...20 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Chapter 2 Overview...
Страница 70: ...70 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Chapter 9 Performance...
Страница 74: ...74 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Appendix A Use Cases...
Страница 92: ...92 www xilinx com Video Scaler v4 0 User Guide UG805 March 1 2011 Appendix B Programmer Guide...