HB7121B

Electronics Industries Co., Ltd.

CMOS IMAGE SENSOR

System IC Division

With 8-bit ADC

This document is a general product description and is subject to change without notice. Hyundai Electronics does not assume

any responsibility for use of circuits described. NO patent licenses are implied.

DA21991011R_1.0

- 13 -

1999 Hyundai System IC Division

PRELIMINARY

This register controls power down and color select.

(400*300 CMOS image sensor only)

<default value : 1b>

This bit is only exist in 400*300 CMOS image sensor chip to enable image sensor operation

by software. This bit has same function as ENB pin control.

It’ s very useful for the applications that is needed want to reduce interface pin count to

CMOS image sensor. In that case, cannot ENB pin to VDD line and control the sensor using

this bit.

n

Mode C[2]

:

pwr_dn(A/D converter power down)

<default value : 0b>

This bit controls power down of A/D converter when sleep mode(idle state) is set by ENB pin

is low or sw_enb(Mode C[3]) is high. When set to high, A/D converter is turned on whenever

ENB is low or sw_enb is high. When set to low, A/D converter is turned off always regardless

ENB pin state or sw_enb state . But digital block goes to power down mode always when

ENB is low regardless this bit.

This bit selects color mode or monochrome mode. Default value means color image sensor

and all three ADCs are used for Bayer RGB color pattern respectively, then RGB gains are

controlled independently. But when set this to one, i.e. monochrome mode, just single ADC is

used for all pixels regardless RGB color.

At the monochrome mode all pixels are controlled by ‘ G’ gain only. ‘ R’ and ‘ B’ gain are not

used. In case of monochrome image sensor, this bit should be set to ‘ 1’ get the good image

and to simplify the sensor control.

(4) Row start address Register

(Higher byte

:

Address 10h,

default : 00h,

R/W)

(Lower byte

:

Address 11h,

default : 06h,

R/W)

Define window start position row start address of display window. Should be programmed with

value between 6 and 306.