CMV300 datasheet(18/56 Pages) AMSOSRAM

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Reference:CMV300-datasheet-v2.11

CMV300 Datasheet

Page 16 of 54

sensor is idle before read out starts.

When running the CMV300 sensor at 40MHz with 4 outputs and recommended FOT settings this results in: 105.625us.

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When running the CMV300 sensor at 40MHz with 4 outputs and reading 480 lines this results in: 1950µs

This results in a total read-out time of 105.625us + 1950µs = 2.055625ms  486fps for 640 * 480 resolution.

3.7 START-UP SEQUENCE

The following sequence should be followed when the CMV300 is started up in default output mode (300Mbps, 12bit

resolution).

1μs

Stabelization time

Supply

CLK_IN

SYS_RES

Frame_REQ

1μs

FIGURE 4: START-UP SEQUENCE FOR 300MBPS @ 12-BIT

The master clock (25MHz for 300Mbps in 12-bit mode) should only start after the supplies are stable. The external reset

pin should be released at least 1μs after the supplies have become stable. The first frame can be requested 1μs after

the reset pin has been released. An optional SPI upload (to program the sequencer) is possible 1μs after the reset pin

has been released. In this case the FRAME_REQ pulse must be postponed until after the SPI upload has been completed.

When the CMV300 will be used in 8 or 10-bit mode or at another speed than 300mbps, an SPI upload is necessary to

program the sensor. In this case the start-up sequence looks like the diagram below. A PLL lock-time of 1ms should be

considered after uploading the register settings and before sending the FRAME_REQ pulse.

1μs

Stable time

Supply

CLK_IN

SYS_RES_N

FRAME_REQ

SPI settings

SPI upload

1μs

1ms

FIGURE 5: START-UP SEQUENCE FOR 8 OR 10 BIT MODE OR ANOTHER SPEED

The following SPI registers should be uploaded in this mode:

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