MT9M114_16 Datasheet, PDF(41/62 Page) ON Semiconductor – High-Definition (HD) System-On- A-Chip (SOC) Digital Image Sensor

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MT9M114_16 Datasheet, PDF (41/62 Pages) ON Semiconductor – High-Definition (HD) System-On- A-Chip (SOC) Digital Image Sensor

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MT9M114: 1/6-Inch 720p High-Definition (HD) System-On-A-Chip (SOC) Dig-

ital Image Sensor

UVC Interface

The MT9M114 supports a set of UVC (USB Video Class) controls in order to simplify the

integration of the MT9M114 with a host's USB bridge (or ISP) device.

The MT9M114 firmware includes a 'UVC Control' component that augments the

CamControl variables. The UVC Control component sits above the CamControl inter-

face (in terms of abstraction) and acts as a 'virtual host'. The intention is that CamCon-

trol and all other components are unaware of the UVC Control component.

UVC Control exposes a 'UVC control' page of shared variables to the host. This page

contains variables compliant with the UVC 1.1 specification (where possible). The vari-

ables on this page are named to match the UVC specification, and have matching data

sizes, units and ranges as required. Each UVC variable is 'virtual' - it does not control any

MT9M114 function directly.

MT9M114 therefore provides a 'dual-personality' host interface:

The primary CamControl interface, this interface exposes the full feature-set of the

device.

The secondary UVC Control interface, which simplifies integration of MT9M114 into a

PC-Cam application.

More details on this topic can be found in the Developer Guide.

Table 15: Summary of UVC Commands

Variable

R0xCC00

VAR(0x13,0x0000)

R0xCC01

VAR(0x13,0x0001)

R0xCC02

VAR(0x13,0x0002)

R0xCC03

VAR(0x13,0x0003)

R0xCC04

VAR(0x13,0x0004)

R0xCC08

VAR(0x13,0x0008)

R0xCC0A

VAR(0x13,0x000A)

R0xCC0C

VAR(0x13,0x000C)

R0xCC0E

VAR(0x13,0x000E)

R0xCC10

VAR(0x13,0x0010)

R0xCC12

VAR(0x13,0x0012)

R0xCC14

VAR(0x13,0x0014)

R0xCC16

VAR(0x13,0x0016)

Name

UVC_AE_MODE_CONTROL

UVC_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL

UVC_AE_PRIORITY_CONTROL

UVC_POWER_LINE_FREQUENCY_CONTROL

UVC_EXPOSURE_TIME_ABSOLUTE_CONTROL

UVC_BACKLIGHT_COMPENSATION_CONTROL

UVC_BRIGHTNESS_CONTROL

UVC_CONTRAST_CONTROL

UVC_GAIN_CONTROL UINT16

UVC_HUE_CONTROL

UVC_SATURATION_CONTROL UINT16

UVC_SHARPNESS_CONTROL

UVC_GAMMA_CONTROL

MT9M114/D Rev. 11, 2/16 EN

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