Xilinx LogiCORE IP User Manual page 76

Appendix B: Programmer Guide
Table B-1: Video Scaler Registers Overview (Cont'd)
Address Name
0x001c aperture_vert
0x0020 output_size
0x0024 num_phases
0x0028 coeff_sets
0x002c start_hpa_y
0x0030 start_hpa_c
0x0034 start_vpa_y
0x0038 start_vpa_c
0x003c coef_write_set_addr
0x0040 coef_values
0x0044 coef_set_bank_rd_addr
0x0048 coef_mem_rd_addr
0x004c coef_mem_output
0x00F0 Version Register
0x0100 Software_Reset
0x021C GIER
0x0220 ISR
0x0228 IER
76
Read/Write
aperture_start_line: Location of first subject line in input image,
relative to first active line in that image
R/W
aperture_end_line: Location of final subject line in input image,
relative to first active line in that image
output_h_size: Width of output image (pixels)
R/W
output_v_size: Height of output image (lines)
num_h_phases: Number of phases of coefficients in current
horizontal filter set
R/W
num_v_phases: Number of phases of coefficients in current
vertical filter set
hcoeffset: Active coefficient set to use in horizontal filter
operation
R/W
vcoeffset: Active coefficient set to use in vertical filter operation
Fractional value used to initialize horizontal accumulator at
R/W
rectangle left edge for luma
Fractional value used to initialize vertical accumulator at
R/W
rectangle top edge for luma
Fractional value used to initialize horizontal accumulator at
R/W
rectangle left edge for chroma
Fractional value used to initialize vertical accumulator at
R/W
rectangle top edge for chroma
Coefficient set write address to indicate which coefficient bank
R/W
to write
W Coefficient values to write
R/W Set and bank number to be read
R/W Phase and tap number to be read
R Coefficient readback output
R Hardware version information
Writing a SOFT_RESET value to this register resets the software
W registers and the Video Scaler IP core. The SOFT_RESET value is
determined by EDK.
R/W Global Interrupt Enable Register
Interrupt Status Register; Read to determine the source of the
R/W
interrupt, write to clear the interrupt
Interrupt Enable Register; 0 to mask out an interrupt, 1 to enable
R/W
an interrupt
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Description
Video Scaler v4.0 User Guide
UG805 March 1, 2011