AM3703CUS datasheet(190/280 Pages) TI

190 / 280 page

AM3715, AM3703

SPRS616F

– JUNE 2010 – REVISED AUGUST 2011

www.ti.com

6.5

Multimedia Interfaces

6.5.1

Camera ISP2P Interface

NOTE

For more information, see Camera ISP chapter of the AM/DM37x Multimedia Device

Technical Reference Manual (literature number SPRUGN4).

The camera subsystem provides the system interfaces and the processing capability to connect raw, YUV

or JPEG image sensor modules to the device for video-preview, video-record and still-image-capture

applications.

The camera ISP2P subsystem supports up to two simultaneous pixel flows but only one of them can use

the video processing hardware:

•

Parallel camera interface + Serial camera interface: one interface data goes through the video

processing hardware. The other interface data goes directly to memory

•

Serial camera interface + Serial camera interface: one serial interface data goes through the video

processing

hardware.

The

other

serial

interface

data

goes

directly

memory.

The camera ISP2P subsystem supports different camera configurations:

•

10-bit Parallel interface

•

12-bit Parallel interface

•

12-bit Parallel interface

Note: For more information, see the Camera ISP / Camera ISP Environment / Camera ISP Connectivity

Schemes section of the AM/DM37x Multimedia Device Technical Reference Manual (literature number

SPRUGN4).

6.5.1.1

Camera Output Clocks (cam_xclka and cam_xclkb)

Table 6-22. ISP2P cam_xclka and cam_xclkb Output Clocks Switching Characteristics

NO.

PARAMETER

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

ISP15

1 / tc(xclk)

Frequency(1), output clock cam_xclkn(4)

216

MHz

ISP16

tw(xclkH)

Typical pulse duration, output clock

0.5P(2)

cam_xclkn(4) high

ISP16

tw(xclkL)

Typical pulse duration, output clock

0.5P(2)

cam_xclkn(4) low

tdc(xclk)

Duty cycle error, output clock cam_xclkn(4)

0.5 * P(2) - 2.083

tJ(xclk)

Cycle jitter(3), output clock cam_xclkn(4)

0.044 * P(2)

tR(xclk)

Rise time, output clock cam_xclkn(4)

0.93

tF(xclk)

Fall time, output clock cam_xclkn(4)

0.93

(1) Related with the cam_xclkn(4) maximum and minimum frequencies programmable in the ISP module.

NOTE: You must disable the camera sensor or the camera module to change the frequency configuration. For more information, see the

AM/DM37x Multimedia Device Technical Reference Manual (literature number SPRUGN4).

(2) P = cam_xclkn(4) period in ns

(3) Maximum cycle jitter supported by cam_xclka and cam_xclkb output clocks.

(4) In cam_xclkn, n is equal to a or b.

190

Timing Requirements and Switching Characteristics

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