參數(shù)資料
型號(hào)： OV6120
廠商： Electronic Theatre Controls, Inc.
英文描述： SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA
中文描述： 單芯片CMOS到岸價(jià)格彩色數(shù)碼攝像機(jī)
文件頁(yè)數(shù)： 25/31頁(yè)
文件大?。?/td> 341K
代理商： OV6120
14 May 1999
Version 1.11
25
OV6620/OV6120
SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Advanc ed Information
Preliminary
Table 15. Slave ID Addresses
CS[2:0]
000
001
010
011
100
101
110
111
WRITE ID (hex)
C0
C4
C8
CC
D0
D4
D8
DC
READ ID (hex)
C1
C5
C9
CD
D1
D5
D9
DD
Therefore, the OV6620/OV6120 sensor takes the read
subaddress from the previous write cycle. In multi-byte
write or multi-byte read cycles, the subaddress is auto-
matically increment after the first data byte so that con-
tinuous locations can be accessed in one bus cycle. A
multi-byte cycle overwrites its original subaddress;
therefore, if a read cycle immediately follows a multi-
byte cycle, you must insert a single byte write cycle that
provides a new subaddress.
The OV6620/OV6120 imager can be programmed to
one-of-eight slave ID addresses. Function pins CS[2:0]
pins 35, 37, 34, respectively).
The OV6620/OV6120 sensors support both single chip
and multiple chip configurations. By asserting MULT
(pin 47) high, the sensor can be programmed for up to
8 slave ID addresses. Asserting MULT low configures
the OV6620/OV6120 imagers for single ID slave ad-
dress with address C0 for writes and address C1 for
reads. MULT is internally defaulted to a low condition.
In the write cycle, the second byte in I
2
C bus is the sub-
address for selecting the individual on-chip registers,
and the third byte is the data associated with this regis-
ter. Writing to unimplemented subaddress is ignored.
In the read cycle, the second byte is the data associ-
ated with the previous stored subaddress. Reading of
unimplemented subaddress returns unknown.
3.2
Register Set
The table below provides a list and description of avail-
able I
2
C registers contained in the OV6620/OV6120
image sensor.
Table 16. I
2
C Registers
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions
00
Gain[6:0]
00
RW
AGC Gain Control
GC[7:6] - unimplemented bit, returns ‘X’ when read.
GC[5:0] – Storage for the current AGC Gain setting.
This register is updated automatically. If AGC is enabled, the internal control stores the optimal
gain value in this register. IF AGC is not enabled, a “00” is stored in this register.
Blue Gain Control
BLU[7] – “0” decrease gain, “1” increase gain.
BLU[6:0] – blue channel gain balance value.
Red Gain Control
RED[7] – “0” decrease gain, “1” increase gain.
RED[6:0] – red channel balance value.
Saturation Control
SAT[7:0] – saturation adjustment. “FFh”- highest, “00h”-lowest
reserved
Contrast Control
CTR[7:0] – contrast adjustment. “FFh”-highest, “00h”-lowest
Brightness Control
BRT[7:0] – brightness adjustment. “FFh”-highest,“00h”-lowest
Sharpness Control
SHP[7:4] – Threshold of sharpness. Range: 0~80mV, Step: 5 mV
SHP[3:0] – Sharpness control. Range: 0 ~ 8x, Step: 0.5x
reserved
reserved
reserved
reserved
01
Blue[7:0]
80
RW
02
Red[7:0]
80
RW
03
Sat
80
RW
04
Rsvd04
XX
-
05
Cnt
48
RW
06
Brt
80
RW
07
Sharpness
C6
RW
08
09
0A
0B
Rsvd08
Rsvd09
Rsvd0A
Rsvd0B
XX
XX
XX
XX
-
-
-
-
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