2009-8-18 proprietary to Omnivision Technologies
1-3
Contents
OV5642 Embedded Firmware User Guide ...............................................................1-1
1 Embedded Resources.............................................................................................................1-4
2 Auto Focus Solution...............................................................................................................2-5
2.1 Embedded Auto Focus Solution.................................................................................2-5
2.2 External Auto Focus Solution ....................................................................................2-6
3 User Interface.........................................................................................................................3-7
3.1 Command and Status Registers..................................................................................3-7
3.2 Main Command Table................................................................................................3-7
3.3 Auto Focus Status ......................................................................................................3-8
4 Firmware User Guide.............................................................................................................4-9
4.1 Initialization ...............................................................................................................4-9
4.2 State Transition Diagram............................................................................................4-9
4.3 Auto Focus Control..................................................................................................4-10
4.4 Step Focus Mode Commands...................................................................................4-10
4.4.1 Step to Near Object......................................................................................4-10
4.4.2 Step to Far Object.........................................................................................4-10
4.4.3 Step to Furthest Object.................................................................................4-10
4.4.4 Step to Nearest Object..................................................................................4-10
4.4.5 Step to Specified Position.............................................................................4-10
4.4.6 Samples........................................................................................................4-10
4.5 Auto Focus Sample Flow.........................................................................................4-11
5 Motor Driver Mode..............................................................................................................5-12
5.1 Normal Driver Mode................................................................................................5-12
5.2 Special Driver Mode................................................................................................5-12
5.3 Motor Driver Mode Setting......................................................................................5-12
6 Auto Focus Zone..................................................................................................................6-13
6.1 Zone(X0, Y0, X1, Y1)..............................................................................................6-13
6.2 Zone Array Mode.....................................................................................................6-13
6.2.1 Zone Array Mode 1 – center mode...............................................................6-13
6.2.2 Zone Array Mode 2 – 5x mode ....................................................................6-14
6.2.3 Zone Array Mode 3 – 5+ mode....................................................................6-14
6.2.4 Zone Array Mode 4 – 5f mode.....................................................................6-14
6.2.5 Zone Array Mode 5 –float center mode .......................................................6-14
6.2.6 Zone Array Mode Setting.............................................................................6-14
6.3 Zone Selection Mode ...............................................................................................6-15
6.3.1 Zone Selection Mode 1 – Auto Mode ..........................................................6-15
6.3.2 Zone Selection Mode 2 – Semi Auto Mode .................................................6-15
6.3.3 Zone Selection Mode 3 – Manual Mode......................................................6-15
6.3.4 Zone Selection Mode Setting.......................................................................6-15
7 Update History.....................................................................................................................7-17
评论0