c15bc1 aptina, c15bc1 Datasheet - Page 22

• Manufacturer Part Number: c15bc1
• Description: Mt9d014 1/4-inch 2mp Cmos Digital Image Sensor
• Manufacturer: aptina

Table 6:
Output Size Restrictions
Effect of Scaler on Legal Range of Output Sizes
PDF: 0526161444/Source:6112702771
MT0D014_DS - Rev. J 5/10 EN
x_output_size[0]
y_output_size[0]
x_output_size
y_output_size
y_odd_inc[0]
Parameter
scale_m
scale_n
Programming Rules (continued)
Notes:
The SMIA CCP2 specification imposes the restriction that an output line shall be a
multiple of 32 bits in length. This imposes an additional restriction on the legal values of
x_output_size:
• When ccp_format[7:0] = 8 (RAW8 data), x_output_size must be a multiple of 4
• When ccp_format[7:0] = 10 (RAW10 data), x_output_size must be a multiple of 16
This restriction can be met by rounding up x_output_size to an appropriate multiple.
Any extra pixels in the output image as a result of this rounding contain undefined pixel
data but are guaranteed not to cause false synchronization on the CCP2 data stream.
There is an additional restriction that x_output_size must be small enough such that the
output row time (set by x_output_size, the framing and CRC overhead of 12 bytes, the
ccp_signalling_mode and the output clock rate) must be less than the row time of the
video array (set by line_length_pck and the video timing clock rate).
When the scaler is enabled, it is necessary to adjust the values of x_output_size and
y_output_size to match the image size generated by the scaler. The MT9D014 will not
operate properly if the x_output_size and y_output_size are significantly larger than the
1. With subsampling, start and end pixels must be addressed (impact on x/y start/end addresses, function
(x_output_size[1:0] = 0).
(x_output_size[3:0] = 0).
of image orientation bits). SMIA FS Errata see “Subsampling” on page 39.
hardware: bit[0] is read-
hardware: bit[0] is read-
(this is enforced in
(this is enforced in
Minimum Value
scaler_m_min
scaler_n_min
only)
only)
256
1
0
2
0
22
MT9D014: 1/4-Inch 2Mp CMOS Digital Image Sensor
frame_length_lines
Maximum Value
scaler_m_max
scaler_n_max
1608
1
0
0
Aptina reserves the right to change products or specifications without notice.
Programming Restrictions
©2007 Aptina Imaging Corporation. All rights reserved.
Origin
SMIA
SMIA
SMIA
Minimum from SMIA FS
Section 5.2.2.5.
Maximum is a
consequence of the
output FIFO size on this
implementation.
SMIA FS Section 5.2.2.2.
Minimum ensures 1
Bayer row-pair.
Maximum avoids output
frame being longer than
pixel array frame.
SMIA FS Section 5.2.2.2
Preliminary