RSZ_SDR_INADD
RSZ_SDR_INOFF
RSZ_IN_START [12:0]
HORZ_ST
RSZ_IN_SIZE [12:0]
HORZ
camisp-115
RSZ_IN_SIZE [28:16]
VERT
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Camera ISP Functional Description
Figure 6-87. Camera ISP VPBE Resizer Resizer in Memory-Input Mode
6.4.7.2.3.3 Camera ISP VPBE Resizer Output Interface
In both input modes, the
register specifies output width/height, the
register specifies output starting pixel (upper-left corner) memory address, and the
register specifies memory address offset between the beginning of output rows. The resizer output always
goes to memory.
NOTE:
,
, and
must be 32-byte-aligned; the lower 5 bits of the byte address are assumed to be zero.
Output-width constraints: The output width (
[11:0] HORZ) must be at least 16 pixels, and
be even (so that the same number of Cb and Cr components is outputted). Due to the vertical memory
size constraint, the output width (
[11:0] HORZ) cannot be greater than:
•
4096 pixels if the vertical resizing ratio is between 1/2 and 4 ((
[19:10] VRSZ + 1) <= 512)
•
1650 pixels wide if the vertical resizing ratio is between 1/2 and 1/4 ((
[19:10] VRSZ + 1) >
512)
6.4.7.2.4 Camera ISP VPBE Resizer Horizontal and Vertical Resizing
In the rest of this section:
•
HRSZ is used for
[9:0] HRSZ + 1.
•
VRSZ is used for
[19:10] VRSZ + 1.
The resizer module can upsample or downsample image data with independent resizing factors in the
horizontal and vertical directions. The HRSZ and VRSZ parameters can range from 64 to 1024 to give a
resampling range from 4 to 0.25 (256/HRSZ or 256/VRSZ).
1215
SWPU177N – December 2009 – Revised November 2010
Camera Image Signal Processor
Copyright © 2009–2010, Texas Instruments Incorporated