OV7620 datasheet(32/60 Pages) ETC

32 / 60 page

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

OMNIVISION TECHNOLOGIES INC.

Preliminary Company Confidential

COMC7 - AWB activation threshold selection: 1- high; 0-low.

COMC6 - Reserved.

COMC5 - QVGA digital output format selection. 1 - 320x240; 0 - 640x480.

COMC4 - Field/Frame vertical sync output in VSYNC port selection: 1 - frame sync, only inserted in ODD

field vertical sync; 0 - field vertical sync, effect in Interlaced mode

COMC3 - HREF polarity selection: 0 - HREF positive effective, 1 - HREF negative.

COMC2 - RGB gamma selection: 1 - Gamma on, value defined by register [62] value; 0 - gamma is 1 (lin-

ear).

COMC1 - Reserved.

COMC0 - Reserved.

COMD7 - Reserved.

COMD6 - PCLK polarity selection. “0” OV7620 output data at PCLK falling edge and data bus will be stable

at PCLK rising edge; “1” rising edge output data and stable at PCLK falling edge. When

OV7620 work as CCIR656 format, COMB4=1, this bit is disable and should use PCLK rising

edge latch data bus.

COMD<5:1> - Reserved.

COMD0 - U V digital output sequence exchange control. 0 - V U V U ... for 16Bit, V Y U Y ... for 8 Bit; 1- U

V U V ... for 16Bit and U Y V Y ... for 8 Bit.

FD<7:2>- Frame drop selection, it operates in ODD and EVEN mode as defined by FD<1:0>, it is ignored

in OFF & FRAME mode. Its purpose is to divide the video signal into programmed number of

time slots in unit of field/frame, and to allow HREF to be active only one field/frame during the

period. This function does not affect the video data or pixel rate.

000000 - 000001: disable digital data output, only output black reference level.

000010 - 111111: Output 1 of (2 ~ 63) frame. If set register 33 bit 1= 1, that means

only drop 1 frame from (2 ~ 63) frame.

Bits

COMC7

COMC6

COMC5

COMC4

COMC3

COMC2

COMC1

COMC0

Default

Bits

COMD7

COMD6

COMD5

COMD4

COMD3

COMD2

COMD1

COMD0

Default

Bits

FD7

FD6

FD5

FD4

FD3

FD2

FD1

FD0

Default

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