ov7620 OmniVision Technologies, Inc, ov7620 Datasheet - Page 42

• Manufacturer Part Number: ov7620
• Description: Single-chip Cmos Vga Color Digital Camera
• Manufacturer: OmniVision Technologies, Inc

OV7620/OV7120 Product Specifications - Rev. 1.2 (7/10/01)
Register 27 - rw: Common control G
Register 28 - rw: Common control H
Register 29 - rw: Common control I
Bits
Default
Bits
Default
Bits
Default
COMG7: Reserved.
COMG6: Reserved.
COMG5: Reserved.
COMG4: RGB matrix disable. “1” - Bypass RGB matrix. “0” - Enable RGB matrix.
COMG3: Reserved.
COMG2: “1” Enables manual adjustment of A/D offset: 1 - A/D data will add or subtract a value defined by
COMG1: - Disables CCIR range clip.
COMG0: - Special interface for external micro-controller and RAM timing control. See timing chart.
COMH7: - “1” selects One-Line RGB raw data output format, “0” selects normal dual-line (repetitive) raw
COMH6: - “1” enable Black/White mode.
COMH5: - “1” select Progressive Scan mode; “0” select Interlaced mode.
COMH4: - Freeze AEC/AGC value - current values retained. This is effective only when register 13 bit 0=1.
COMH3: - AGC disable.
COMH2: - Raw data output format: “1” - Green on Y channel, B R B R....on UV channel (GRB422), “0” - G
COMH1: - 2x Gain boost. “1” Double PreAmp gain to 6dB. “0” PreAmp gain is 0dB.
COMH0: - Reserved.
COMI7: - AEC disable. “1” If register 13 bit 0=1, AEC stop and register [10] value will be held at last AEC
COMI6: - Enable slave sync mode selection. “1” slave mode, use external CHSYNC and VSYNC.
COMI<5:4> - Reserved.
COMI3: - Central weighted exposure control.
COMI2: - Reserved.
COMI1 - COMI0: Version flag.
COMG7
COMH7
COMI7
1
0
0
registers [21] and [22]. 0 - A/D data will be shifted by a value defined by registers [21], [22] and
[2E], which is updated by internal circuit.
data output, effective only in Progressive Scan mode.
R G R.... on Y channel, B G B G..... on UV channel.
value and not be updated by internal circuit. “0” - if register 13 bit 0=1, register [10] value will
be updated by internal circuit
“0” master mode
COMG6
COMH6
COMI6
1
0
0
COMG5
COMH5
COMI5
1
0
0
COMG4
COMH4
COMI4
0
0
0
Preliminary
COMG3
COMH3
COMI3
0
0
0
COMG2
COMH2
COMI2
0
0
0
Company Confidential
OMNIVISION TECHNOLOGIES INC.
COMG1
COMH1
COMI1
1
0
0
COMG0
COMH0
COMI0
0
0
0