LR38603 データシートの表示（PDF） - Sharp Electronics

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LR38603

Digital Signal Processor for Color CCD Cameras

Sharp Electronics 

LR38603

ADDRESS

NAME

05h MIN_SH_SEL

MAX_SH

06h REF_IRIS1

07h CTLD_AGC

08h CTLD_0

09h REF_IRIS2

0Ah CLIP_IRIS

0Bh UW_E1

0Ch UW_E2

0Dh UW_E3

0Eh UW_E4

0Fh UW_E5

10h UW_E6

11h UW_E7

12h UW_E8

13h CW_E

14h CWP_E

15h CWA_E

16h EE_DIV_STP

LPFE_O

LPFE_I

17h P_HEE

18h P_LEE

19h MOD8

IRIS_DLY

IRIS_DLY

1Ah AG_DIV_STP

AG_GAIN

1Bh MAX_AGC

1Ch REF_AGC

1Dh S_38M_GA

1Eh S_38M_GA_U

S_38M_MX

BIT

CONTENTS

[7] Select minimum shutter speed 0 : 1/60 s (1/50 s) 1 : 1/100 s (1/120 s)

[6 : 0] Restriction in maximum shutter speed

(When EEMDS, EEMD1, EEMD2, EEMD3 = 4' b1110)

[7 : 0] Reference of exposure

[7 : 0] Outside range of error of exposure reference

(Hysteresis range of IRIS and PGA tweaking range)

[7 : 0] Inside range of error of exposure reference

(Exposure control is stopped in REF_IRIS±CTLD_0)

[7 : 0] Exposure reference in condition against light (When BLC = H)

[7 : 0] Ceiling clip in accumulate exposure data

[7 : 0] Downward weight factor 1 in calculation of exposure. (upper of screen)

[7 : 0] Downward weight factor 2 in calculation of exposure.

[7 : 0] Downward weight factor 3 in calculation of exposure.

[7 : 0] Downward weight factor 4 in calculation of exposure.

[7 : 0] Downward weight factor 5 in calculation of exposure.

[7 : 0] Downward weight factor 6 in calculation of exposure.

[7 : 0] Downward weight factor 7 in calculation of exposure.

[7 : 0] Downward weight factor 8 in calculation of exposure. (lower of screen)

Sum of UW_E1 to UW_E8 must be 256d.

[6 : 0] Ratio of downward IRIS against center

[5 : 0] Center point, position of left-upper area.

[5 : 0] Center point, size of area.

[6 : 4] Select dividing value of shutter speed control.

[3 : 2] Select LPF of IRIS data in PGA normal adjustment.

[1 : 0] Select LPF of IRIS data in PGA tweak.

[7 : 0] Ratio of luminance H peak of IRIS data

[7 : 0] Ratio of luminance L peak of IRIS data

[4] Select peak accumulation. 0 : Avg. of 8 pixels 1 : Avg. of 4 pixels

[3 : 2] Reduction of IRIS control in normal operation.

00 : Operating always

01 : Operating each 2VD timing

10 : Operating each 4VD timing 11 : Operating each 8VD timing

[1 : 0] Reduction of IRIS control in PGA tweak.

00 : Operating always

01 : Operating each 2VD timing

10 : Operating each 4 VD timing 11 : Operating each 8VD timing

[7 : 5] Select dividing value of PGA control.

[4 : 0] Number of steps in PGA gain

[7 : 0] Upper limitation of PGA control.

[7 : 0] Lower limitation of PGA control (initial value of PGA at power-on).

[7 : 0] Fixed PGA gain [7 : 0 (LSB) ]

[3] Fixed PGA gain when using IR3Y48A1 [8 (MSB)]

IR3Y48A1 minimum gain [1 : 0]

[2 : 0]

00 : 0 01 : +6 dB 10 : +12 dB 11 : –2 dB

8

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