OV7910 ETC | Alldatasheet
Document overview
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Technical content
Features
n Single-chip 1/3 inch format video camera — High-sensitivity version (OV7411P) n Composite video: PAL or S-Video n Component video: RGB or YUV n Sensitivity boost (+18 dB) /AGC on-off n Automatic exposure/gain/white balance n External frame sync capability n Aperture correction n I2 C programmable: — color sat., brightness, contrast, white balance, exposure time, gain n Gamma correction (0.45)-On/Off n Low power consumption n +5 volt-only power suPly
O M N IV I S IO N T E C H N O L O G I E S , Inc. Table 1. Pin Description
01 SGND V in Analog ground
02 SVDD V in Analog power (+5VDC)
by applying external bias to this pin.
04 BPAVE Function
05 Rsvd5 V ref Internal reference
06 AGND V in Analog ground
07 AVDD V in Analog power (+5VDC)
08 RGSW Function
09 CEXP Function
15 BUCO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)
O M N IV I S IO N T E C H N O L O G I E S , Inc.
16 GYYO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)
17 RVCVO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)
18 OVDD V in Analog power for video output (+5VDC)
19 G2X Function
20 HGAIN Function
21 BKLT Function
24 PAL Function
25 DVDD V in Digital power
26 DGND V in Digital ground
27 GAMMA Function
28 AGCEN Function
O M N IV I S IO N T E C H N O L O G I E S , Inc. 31 VAXPXO Output Valid pixel detect output. CLK is asserted on this pin during active image period.
32 VHSYNC/MIR Output/Function
33 FSO/VSFR Output/Function
34 FODD/I2CEN Output/Function
Even/Odd field flag. Adding a pullup resistor on this pin enables I 2 C control.
35 PALSW Output PAL switch clock output
36 FSI Input Field sync input
37 PWDN Function Power Down mode selection
38 AMOD0 Function AMOD0 (w/AMOD1) selects output mode. 39 AMOD1 Function AMOD1 (w/AMOD0) selects output mode.
40 HSHP Function Sharpness level selection
41 DEVDD V in Analog power
42 DEGNZD V in Analog ground
43 SCL Input/Output I2 C control
44 SDA Input/Output I2 C data/address
45 VREF1 V ref Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground. 46 VREF2 V ref Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground. 47 VREF3 V ref Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground. 48 VREF4 V ref Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground.
O M N IV I S IO N T E C H N O L O G I E S , Inc.
1.1 Video Standards
1.2 Video Formats
matrix prior to entering the encoder.
1.2.1 Composite and S-Video
Table 2. Standard Configuration required on the appropriate pins.
1.2.2 RGB
and BUCO provides the Blue component.
1.2.3 YUV
O M N IV I S IO N T E C H N O L O G I E S , Inc. Table 3. Video Format Selection
1.3 Configuring the OV7910P/OV7410P/OV7411P
user-defined default configurations. sensors will enable the I 2 C port for access.
1.4 White Balance
white balancing updates every 16 fields. further fine tuned to the requirement of the application.
1.5 Additional Picture Control
19) can then be used to enhance the AGC gain range.
December 7, 1999 Version 1.4 7 OV7910P/OV7410P/OV7411P SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS O M N IV I S IO N T E C H N O L O G I E S , Inc. Preliminary well. GAMMA (pin 27) can be used to set the GAMMA correction. BKLT (pin 21) controls how the OV7910P/ OV7410P/OV7411P image sensors manage backlight conditions. These functions may also be controlled through the I 2 C interface. At power up, AGC and AEC are enabled. AGC can be disabled at power up by configuring the AGCEN pin (pin 28) as required. AEC cannot be enabled/disabled externally and must be reprogrammed through the I 2 C port.
1.6 Other Image Sensor Control Functions
Additional programmable functions for the OV7910P/ OV7410P/OV7411P image sensors include sharpness adjustment, brightness level fine tune, color saturation adjustment, mirror image control, and power down. All of these functions (except power down) can be config- ured either by an external pin or through the I 2 C inter- face.
O M N IV I S IO N T E C H N O L O G I E S , Inc. Table 4. Electrical parameters (0 o C to 70 o C, all voltages referenced to GND)
O M N IV I S IO N T E C H N O L O G I E S , Inc. Figure 1. Spectrum Response
O M N IV I S IO N T E C H N O L O G I E S , Inc. Figure 2. Video Timing Diagram
O M N IV I S IO N T E C H N O L O G I E S , Inc. rate using a 7-bit address/data transfer protocol . Figure 3. I 2 C Bus Protocol Format available through the I 2 C high-speed serial interface.
O M N IV I S IO N T E C H N O L O G I E S , Inc. Figure 4. Bit Transfer on the I 2 C Bus
2.1 I2 C Bus Protocol Format
restart feature is not supported here. Within each byte, MSB is always transferred first.
O M N IV I S IO N T E C H N O L O G I E S , Inc. a multi-byte cycle, you must insert a single-byte write cycle that provides a new subaddress. The OV7910P/OV7410P/OV7411P supports a single slave ID. The ID is preset to 80 write and 81 for read. the third byte is the data associated with this register. Writing to an undefined subaddress is ignored. fined subaddresses returns unknown data.
2.2 Register Set
Table 5. I2 C Registers
00 Gain[6:0] 00 RW
GC[7] - unimplemented bit, returns ‘X’ when read. GC[6:0] – Storage for the current AGC Gain setting. gain value in this register. IF AGC is not enabled, a “00” is stored in this register.
01 Blue[7:0] 80 RW
Storage for the current blue channel setting for white balance control. BLU[7] – “0” decrease gain, “1” increase gain. BLU[6:0] – blue channel gain balance value. Note: This function is not available on the OV7410P/OV7411P Image Sensor.
02 Red[7:0] 80 RW
Storage for the current red channel setting for white balance control. RED[7] – “0” decrease gain, “1” increase gain. RED[6:0] – red channel balance value. Note: This function is not available on the OV7410P/OV7411P Image Sensor.
03 Sat D0 RW
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
06 Rsvd06 B2 RW reserved
07 Blue Bias 20 RW
BBS[5:0] – blue channel bias value. Note: This function is not available on the OV7410P/OV7411P Image Sensor. Figure 5. Data Transfer on the I 2 C Bus
14 Version 1.4 December 7, 1999 SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS O M N IV I S IO N T E C H N O L O G I E S , Inc. Preliminary
08 Red Bias 20 RW
RBS[7:6] – rsvd (RBS[7:6] = 01) RBS[5:0] – red channel bias value. This value defines the fine tune adjustment for the red tint in the white balance control. This reg- ister is the manual control portion of the AWB control Note: This function is not available on the OV7410P/OV7411P Image Sensor.
09 Rsvd09 B7 RW reserved
0B Rsvd0B — W reserved 0C Rsvd0C — W reserved 0D Rsvd0D 4E RW reserved 0E Rsvd0E 32 RW reserved 0F Rsvd0F 7A RW reserved 10 version 03 R Version
11 Manufacture ID (H) 7F R MIDH[7:0] – manufacture ID high byte
12 Manufacture ID (L) A2 R MIDL[7:0] – manufacture ID low byte
13 AEC 82 RW AEC[7:0] – Manual exposure setting. “00” = lowest, 82 = Highest
14 Common A 9F RW
COMA[7] - CEXP, “0” selects central exposure COMA[6:4] - rsvd COMA[3] - GAMMA, “1” selects gamma = 0.45, “0” select gamma=1.0 COMA[2] - AGCEN, “1” enables auto gain control COMA[1] - AWBEN “1” enables auto white balance * COMA[0] - AEC enable. If AEC is enabled, the AEC register (Reg. 13) is updated automatically. If AEC is disabled, AEC register remains unchanged. * Note: COMA[1], AWBEN is not available on the OV7410P/OV7411P Image Sensor.
15 Common B 00 RW
COMB[7] - SRST, “1” initiates soft reset. Initiate soft reset. All registers are set to default values and chip is reset to known state and resumes normal operation. This bit is automatically cleared after reset. COMB[6]] - MIRR, “1” selects mirror image COMB[5]] - VSFR, “1” enables frame sync output to VSYNC (pin 32), “0” enables field sync ouput to VSYNC COMB[4]] - BKLT, “1” selects backlight exposure mode COMB[3]] - FREX, “1” disables the update of exposure and gain value COMB[2] - HGAIN. Automatic Gain Control (AGC) gain range selection. See COME[6] (G2X), below. “0” - select normal AGC range (1X <-> 4X) “1” - select expanded AGC range (1X -> 8X) HGAIN G2X AGC Range 001X <-> 4X 012X <-> 8X 101X <-> 8X 112X <-> 16X COMB[1:0] - AMOD, select video output modes 00 - S-video and CVBS * 01 - RGB * 10 - YUV 11 - RGB * * Note: COMB[1:0] = 00, 01, 11 are not available on the OV7410P/OV7411P Image Sensor.
16 Common C 20 RW
COMC[7] - Smart AWB. “0” disables SMTawb, “1” enables SMTawb COMC[6] - rsvd COMC[5] - Automatic Level Control. “0” disables ALC, “1” enables ALCauto level control COMC[4:0] - rsvd
17 Common D 34 RW
COMD[7:4] - rsvd COMD[3] - BPSHP. “0” enables sharpness control, “1” disables sharpness control COMD[2] - rsvd COMD[1] -AWBTM, “1” selects fast AWB update * COMD[0] - rsvd * Note: COMD[1], AWBTM is not available on the OV7410P/OV7411P Image Sensor.
18 Rsvd18 A2 RW reserved
19 Rsvd19 66 RW reserved
(hex) Register Default (hex) Read/ Write Descriptions
December 7, 1999 Version 1.4 15 OV7910P/OV7410P/OV7411P SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS O M N IV I S IO N T E C H N O L O G I E S , Inc. Preliminary 1A Rsvd1A 73 RW reserved 1B Rsvd1B D0 RW reserved 1C Rsvd1C 15 RW reserved 1D Common E 20 RW COME[7] - rsvd COME[6] - G2XA. Automatic Gain Control (AGC) gain selection. Affects range selected by HGAIN. See COMB[2] (HGAIN), above. “0” - select normal AGC gain (1X) “1” - select enhanced AGC gain (2X) COME[5:0] - rsvd 1E Rsvd1F 30 RW reserved 1F Rsvd20 28 RW reserved 20 - 2F Rsvd2X N/A RW reserved
30 Rsvd30 80 RW reserved
31 Rsvd31 80 RW reserved
32 Rsvd32 80 RW reserved
33 Rsvd33 40 RW reserved
34 Rsvd34 80 RW reserved
35 Rsvd35 20 RW reserved
36 Rsvd36 20 RW reserved
37 Rsvd37 80 RW reserved
38 Rsvd38 80 RW reserved
39 Rsvd39 80 RW reserved
(hex) Register Default (hex) Read/ Write Descriptions
16 Version 1.4 December 7, 1999 SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS O M N IV I S IO N T E C H N O L O G I E S , Inc. Preliminary 18 7 +0.0100.060 -0.005 TYP. 0.040 ±0.007 TYP. 0.440 ±0.005 0.040 ±0.003 0.085 ±0.010 0.020 ±0.003 TYP. R 0.0075
48 PLCS
R 0.0075
4 CORNERS
0.003 0.002 0.020 ±0.002 0.015 ±0.002 0.030 0.003 0.065 ±0.007 ±0.003 Bottom View Top View Side View 6 19 0.006 MAX. 0.002 TYP. 0.350 SQ. ±0.005 0.430 SQ. ±0.005 0.560 SQ. -0.005 +0.012 0 .0 3 6 M IN .
O M N IV I S IO N T E C H N O L O G I E S , Inc. Figure 6. OV7910P/OV7410P/OV7411P Package Outline duced, in any form without the prior written consent of OmniVision Technologies, Inc. Table 6. Ordering Information
18 Version 1.4 December 7, 1999 SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS O M N IV I S IO N T E C H N O L O G I E S , Inc. Preliminary
Revision History
OV7910P/OV7410P AA Product Release 10/1/98 OV7910P/OV7410P AI Process/performance change enhancements 1/1/99 OV7910P/OV7410P AJ Process/performance change enhancements, I2C register changes: Regs. 03, 06, 08, x10 2/11/99 OV7910P/OV7410P AK Performance/manufacturability improvements 2/22/99 OV7910P/OV7410P AK Miscellaneous corrections 6/6/99 OV7910P/OV7410P/ OV7411P AK Add OV7411P release 6/17/99