Omnivision OVMed-A1 DVP User manual

application note
USER MANUAL
OVMed®-A1 DVP (OH00000-EG02-1A-0093)
OVMed-A1 DVP
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OVMed®-A1 ISP board with DVP output
OVMed-A1 DVP
00Copyright © 2019 OmniVision Technologies, Inc. All rights reserved.
This document is provided “as is” with no warranties whatsoever, including any warranty of merchantability,
non-infringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification,
or sample.
OmniVision Technologies, Inc. and all its affiliates disclaim all liability, including liability for infringement of any proprietary
rights, relating to the use of information in this document. No license, expressed or implied, by estoppel or otherwise, to
any intellectual property rights is granted herein.
The information contained in this document is considered proprietary to OmniVision Technologies, Inc. and all its
affiliates. This information may be distributed to individuals or organizations authorized by OmniVision Technologies, Inc.
to receive said information. Individuals and/or organizations are not allowed to re-distribute said information.
Trademark Information
OVMed, OmniVision, and the OmniVision logo are registered trademarks of OmniVision Technologies, Inc.
To learn more about OmniVision Technologies, visit www.ovt.com.
OVMed®-A1 ISP board with DVP output
application note
USER MANUAL
version 1.01
august 2019
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08.02.2019 USER MANUAL proprietary to OmniVision Technologies
i
00table of contents
1 overview 1-1
1.1 introduction 1-1
1.2 ordering information 1-5
1.3 OVMed-A1 DVP package contents 1-5
1.4 OVMed-A1 DVP requirements 1-5
1.5 safety warnings 1-6
1.5.1 electrostatic discharge 1-6
1.5.2 input voltage 1-6
2 system description 2-1
2.1 overview 2-1
2.2 functional block description 2-1
2.2.1 video in 4-pin/6-pin connector 2-1
2.2.2 digital isolators 2-2
2.2.3 bridge processor 2-2
2.2.4 ISP 2-2
2.2.5 MCU 2-2
2.2.6 DVP connector 2-2
2.2.7 USB port 2-2
2.2.8 data memory 2-2
2.2.9 security IC 2-2
2.2.10 firmware memory 2-2
3 hardware description 3-1
3.1 hardware mode switches 3-1
3.2 hardware mode switches 3-2
3.3 sensor interface 3-3
3.4 LED 3-5
3.5 buttons 3-5
4 SCCB protocol 4-1
4.1 SCCB message type 4-1
4.2 output image 4-1
4.3 DVP timing 4-2
5 host commands 5-1
5.1 registers 5-1
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OVMed®-A1 ISP board with DVP output
OVMed-A1 DVP
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5.2 BOOT 5-2
5.3 OVMed-A1 DVP host control 5-3
5.3.1 host command example code 5-5
5.4 SCCB host commands 5-7
5.4.1 application class commands 5-7
5.4.2 image effect class commands 5-13
appendix A mechanical outline A-1
appendix B sensor interface definitions B-1
appendix C event identifiers of application class commands C-1
appendix D event identifiers of image effect class commands D-1
appendix E other characteristics E-1
appendix F test standards F-1
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iii
00list of figures
figure 1-1 OVMed-A1 DVP system diagram 1-1
figure 1-2 OVMed-A1 DVP board 1-2
figure 1-3 image of fingerprint 1-2
figure 1-4 image output through OVMed-A1 DVP port 1-3
figure 1-5 image of color checker 1-4
figure 1-6 DVP connection 1-5
figure 2-1 system block diagram 2-1
figure 2-2 OVMed-A1 DVP system function block 2-1
figure 3-1 OVMed-A1 DVP interface definition 3-1
figure 3-2 hardware switches for HDMI mode 3-3
figure 3-3 sensor interface positions 3-3
figure 3-4 position and definition of LEDs 3-5
figure 3-5 position and definition of buttons 3-6
figure 4-1 message type 4-1
figure 4-2 DVP YUV422 timing diagram 4-2
figure 5-1 OVMed-A1 DVP host control set command flow chart 5-3
figure 5-2 OVMed-A1 DVP host control get command flow chart 5-4
figure A-1 OVMed-A1 DVP system mechanical outline A-1
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v
00list of tables
table 3-1 board pin description 3-1
table 3-2 4-pin sensor interface definitions 3-4
table 3-3 10-pin sensor interface definitions 3-4
table 4-1 DVP supported formats 4-1
table 4-2 DVP YUV422 timing specifications 4-2
table 5-1 OVMed-A1 DVP board SCCB register definitions 5-1
table 5-2 OVMed-A1 DVP status value 5-2
table 5-3 8-bit host command description 5-7
table 5-4 event identifiers of application class commands 5-7
table 5-5 event identifiers of image effect class commands 5-13
table 5-6 supported host commands of IMGCMDID_LENC 5-14
table 5-7 supported host commands of IMGCMDID_SHARPNESS 5-16
table 5-8 supported host commands of IMGCMDID_DNS 5-17
table 5-9 supported host commands of IMGCMDID_CONTRAST 5-18
table 5-10 supported host commands of IMGCMDID_SATURATION 5-19
table 5-11 supported host commands of IMGCMDID_BRIGHTNESS 5-20
table 5-12 supported host commands of IMGCMDID_GAMMA 5-21
table 5-13 supported host commands of IMGCMDID_HGAIN1 5-23
table 5-14 supported host commands of IMGCMDID_HGAIN2 5-24
table 5-15 supported host commands of IMGCMDID_BLACKENHANCE 5-25
table 5-16 supported host commands of IMGCMDID_LIGHTMETERING 5-26
table 5-17 supported host commands of IMGCMDID_DPC 5-27
table 5-18 supported host commands of IMGCMDID_FPN 5-28
table 5-19 supported host commands of IMGCMDID_AWB 5-29
table B-1 4-pin sensor interface definitions B-1
table B-2 10-pin sensor interface definitions B-1
table C-1 event identifiers of application class commands C-1
table D-1 event identifiers of image effect class commands D-1
table E-1 operating and storage conditions E-1
table F-1 OVMed-A1 DVP system test standards F-1
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1-1
1 overview
1.1 introduction
The OVMed®-A1 is a high quality image output board with a stand-alone ISP SoC. It integrates a high-performance ISP
DSP solution, analog-digital converter, and support connection with host device for medical applications.
figure 1-1 OVMed-A1 DVP system diagram
It has one DVP port to output a video stream. The OVMed-A1 DVP has eight buttons to control the image effect, which
can be controlled through SCCB command and the configure tool. When changing the image effect, the changes will be
saved to the board.
When the OVMed-A1 DVP is rebooted, the image effect will be the same as the last time.
The OVMed-A1 DVP board is shown in figure 1-2.
OVMed®A1-007
data
memory
bridge
processor
digital
isolators
isolated
power
security
MCU
power
ISP
program
flash
video in
4-pin /
10-pin
connector
OV6946 /
OV6948
sensor
module
DVP
connector
HDMI
connector
USB
connector
extension
boards
HDMI
display
USB
DDR2
oscillator firmware
memory
buttons
SCCB
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OVMed®-A1 ISP board with DVP output
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figure 1-2 OVMed-A1 DVP board
figure 1-3 image of fingerprint
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1-3
figure 1-4 image output through OVMed-A1 DVP port
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OVMed®-A1 ISP board with DVP output
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figure 1-5 image of color checker
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1-5
1.2 ordering information
Part number: OH00000-EG02-1A-0093
1.3 OVMed-A1 DVP package contents
The box of the OVMed-A1 DVP will contain the following items:
• OVMed-A1 DVP main board
• USB cable
• USB power adapter
• DVP cable
• CD-ROM
1.4 OVMed-A1 DVP requirements
To retrieve the video stream on the monitor through the DVP port, a monitor with an HDMI port must be configured. It is
recommended to use 1280 x 720 resolution for the monitor.
figure 1-6 DVP connection
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OVMed®-A1 ISP board with DVP output
OVMed-A1 DVP
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1.5 safety warnings
1.5.1 electrostatic discharge
This device must be installed on a properly grounded ESD protection surface to avoid damage to the components. A
properly grounded ESD wrist strap must be worn during operation/installation of the device, or connection of cables.
1.5.2 input voltage
The input voltage of device is 5V. Please select the appropriate adapter to avoid damage to the components.
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2-1
2 system description
2.1 overview
The OVMed-A1 DVP system is a single board solution for medical applications. It supports two sensors, OV6949 and
OV6948, when combined with the sensor, it provides analog data and the OVMed-A1 DVP system provides digital data
as shown in figure 2-1.
figure 2-1 system block diagram
2.2 functional block description
figure 2-2 OVMed-A1 DVP system function block
As shown in figure 2-2, during operation, the bridge processor in the OVMed-A1 DVP system synchronizes the analog
output from the OV6946/OV6948 by a predefined communication protocol and provides an integrated analog-to-digital
data conversion using a built-in A/D converter (ADC). The generated digital signals will then be processed by an image
signal processor (ISP). Then finally, standard DVP outputs are sent out through the DVP transmitter.
2.2.1 video in 4-pin/6-pin connector
The current OVMed-A1 DVP supports both OV6946 (size 400x400) and OV6948 (size 200x200) image sensor input and
can auto detect the sensor type.
OV6946
or
OV6948
image
sensor
customer
medical
system
OVMed-A1 DVP system
OVMed®A1-007
data
memory
bridge
processor
digital
isolators
isolated
power
security
MCU
power
ISP
program
flash
video in
4-pin /
10-pin
connector
OV6946 /
OV6948
sensor
module
DVP
connector
HDMI
connector
USB
connector
extension
boards
HDMI
display
USB
DDR2
oscillator firmware
memory
buttons
SCCB
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2.2.2 digital isolators
Digital isolators are used to isolate the signal.
2.2.3 bridge processor
The bridge processor in the OVMed-A1 DVP system synchronizes the analog output from the sensor by a predefined
communication protocol and provides an integrated analog-to-digital data conversion using a built-in A/D converter
(ADC). The output of the bridge processor is standard DVP signals and will be sent to the ISP of the OVMed-A1 DVP
system for further process.
2.2.4 ISP
The image signal processor (ISP) is used to process the digital image signals generated by the bridge processor. The
ISP has its own data-memory and security module.
2.2.5 MCU
The micro-controller unit (MCU) is used to control the OVMed-A1 DVP system and is in charge of processing host
commands from the host SCCB through the SCCB port. It outputs a debug log through the UART port. The MCU has its
own flash and firmware memory.
2.2.6 DVP connector
The DVP connector for the OVMed-A1 DVP system is used to connect the DVP transmitter to the DVP Rx of customer's
platform. The pixel clock is 80 MHz. Operation is controlled via the SCCB interface and the system is considered to be
the SCCB slave when the user writes or reads the registers of the OVMed-A1 DVP. The SCCB slave ID is 0x2D. The
host SCCB used must be a SCCB master.
2.2.7 USB port
The USB port is used to supply power to the OVMed-A1 DVP.
2.2.8 data memory
Data memory is used to process image data by ISP.
2.2.9 security IC
The security module is used by MCU for authorization.
2.2.10 firmware memory
The flash is used to store the firmware of MCU.
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3-1
3 hardware description
3.1 hardware mode switches
The interface definition of the OVMed-A1 DVP board as shown in figure 3-1.
figure 3-1 OVMed-A1 DVP interface definition
The pin descriptions are shown in table 3-1.
table 3-1 board pin descriptiona(sheet 1 of 2)
pin net definition
1NCNC
2 DGND digital ground
3 SDA I2C data
4 RFU reserved DC-5V
5 SCK I2C clock
6BOARD_
RESET reset (active low)
host
FH19C-24S-0.5SH
OVMed®-A1-007
FPC
connector
1
2
3
4
5
6
7
8
9
10
NC
DGND
SDA
RFU
SCK
BOARD_RESET
VSYNC
NC
HREF
RFU
11
12
13
14
15
16
17
18
19
20
RFU
Y9
NC
Y8
DGND
Y7
PCLK
Y6
Y2
Y5
21
22
23
24
Y3
Y4
Y1
Y0
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OVMed®-A1 ISP board with DVP output
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The length of the FPC cable that connects the OVMed-A1 DVP to the host board should be less than 3 cm. The SCCB
bus of the host board must pull-up to 3.3V. The pull-up resistor should be 2k~4.7k. The OVMed-A1 DVP and host board
should be powered together. The host must wait until the SCCB is stable before sending a SCCB command to the
OVMed-A1 DVP. The host board must have four DGND location holes. It is recommend that the holes be connected to
the OVMed-A1 DVP by double-screw bolts.
3.2 hardware mode switches
The OVMed-A1 DVP work mode is controlled by hardware mode switches.
When switching to OVMed-A1 DVP mode, keep the hardware mode switches in DVP mode as shown in figure 3-2.
7 VSYNC vertical sync
8NCNC
9 HREF horizontal reference
10 RFU reserved DC-5V
11 RFU reserved DC-5V
12 Y9 DVP output data 9
13 NC NC
14 Y8 DVP output data 8
15 DGND digital ground
16 Y7 DVP output data 7
17 PCLK pixel clock
18 Y6 DVP output data 6
19 Y2 DVP output data 2
20 Y5 DVP output data 5
21 Y3 DVP output data 3
22 Y4 DVP output data 4
23 Y1 DVP output data 1
24 Y0 DVP output data 0
a. RFU is reserved for DC-5V
table 3-1 board pin descriptiona(sheet 2 of 2)
pin net definition
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3-3
figure 3-2 hardware switches for HDMI mode
3.3 sensor interface
There are two sensor interfaces: 4-pin sensor interface and 10-pin sensor interface as shown in figure 3-3.
figure 3-3 sensor interface positions
The pin definitions are shown in table 3-2 and table 3-3.
Sensor
Interface
Top
Bottom
SwitchTop:
1
2
3
SwitchBottom:
1
sensor
interface
top switch
bottom switch
1
1
2
3
top
bottom
4-Pin
Sensor
Interface
10-Pin
Se n sor
Interface
10-pin sensor
interface
4-pin sensor
interface
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table 3-2 4-pin sensor interface definitions
pin definition
1VOUT
2AVDD
3AGND
4 sensor clock
table 3-3 10-pin sensor interface definitions
pin definition
1 sensor clock
2SIOC
3AGND
4 SIOD (when R484 is mounted)
5 sensor DOVDD (3.3V) (when R483 is mounted)
6 sensor DGND (when R485 is mounted)
7AVDD
8 LED_P (connected to isolated 5V)
9VOUT
10 LED_PWM_TRI (controlled by PWM wave from FPGA via a triode; it is isolated from FPGA)
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