OV7620 datasheet(34/60 Pages) ETC

34 / 60 page

OV7620 Product Specifications - Rev. 1.2 (5/13/00)

OMNIVISION TECHNOLOGIES INC.

Preliminary Company Confidential

HS<7:0> - selects the starting point of HREF window, each LSB represents four pixels for Inter-

laced/Progressive full resolution mode, two pixels for QVGA resolution mode, this value is set

based on an internal column counter, the default value corresponds to 640 horizontal window.

Maximum window size is 664. see window description below. HS<7:0> programmable range

is [2C]- [D2], and should less than HE<7:0>. HS<7:0> should be programmable to value larger

than or equal to [2C]. Value larger than [D2] is invalid. See Figure 1.14.

HE<7:0> - selects the ending point of HREF window, each LSB represents four pixels for full resolution

and two pixels for QVGA resolution, this value is set based on an internal column counter, the

default value corresponds to the last available pixel. The HE<7:0> programmable range is

[2D] - [D2]. HE<7:0> should be larger than HS<7:0> and less than or equal to [D2]. Value

larger than [D2] is invalid. See Figure 1.14.

VS<7:0> - selects the starting row of vertical window, in full resolution mode, each LSB represents 1scan

line in one field for Interlaced Mode, 2 scan line in one frame for Progressive Scan Mode. In

QVGA resolution (set by register 14 bit 5), each LSB represents 1 scan line in one field for

Interlaced Mode, 1scan line in one frame for Progressive Scan Mode. See Figure 1.14. Min. is

[05], max. is [F6] and should less than VE<7:0>.

VE<7:0>- selects the ending row of vertical window, in full resolution mode, each LSB represents 1scan

line in one field for Interlaced Mode, 2 scan line in one frame for Progressive Scan Mode. In

QVGA resolution, each LSB represents 1 scan line in one field for Interlaced Mode, 1scan line

in one frame for Progressive Scan Mode. See Figure 1.14. Min. is [05], max. is [F6] and should

larger than VS<7:0>.

Bits

HS7

HS6

HS5

HS4

HS3

HS2

HS1

HS0

Default

Bits

HE7

HE6

HE5

HE4

HE3

HE2

HE1

HE0

Default

Bits

VS7

VS6

VS5

VS4

VS3

VS2

VS1

VS0

Default

Bits

VE7

VE6

VE5

VE4

VE3

VE2

VE1

VE0

Default

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