STV-6410-R01 datasheet(57/105 Pages) STMICROELECTRONICS

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CMOS Sensor; Customer Datasheet, Rev 3.0, 28 September 2000

VV5410 & VV6410

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8.10.5 Line Start Signal, LST

There are 4 modes of operation for the LST pin programmable via the serial interface, (see fg_mode[20]):

1. Disabled (Always Low- Default).

2. Free running - LST signal occurs once at the beginning of every line.

3. All lines except blanking lines are qualiﬁed by LST.

4. Only Black and Visible Lines are qualiﬁed by LST.

The LST is tri-stated either when OEB is driven high or via the appropriate control bit in the serial interface, (see data_format

register[22]). Table 18below details the LST timing for the different video modes, (see Figure 33 for specification of t1 and t2).

8.10.6 Frame Start Signal, FST

There are 3 modes of operation for the FST pin programmable via the serial interface:

1. Disabled (Always Low- Default).

2. Frame start signal. The FST signal occurs once frame, is high for 356 pixel periods (712 system clock periods) and qualiﬁes

the data in the start of frame line.

3. Shutter/Electronic Flash Synchronisation Signal - FST rises a the start of the video data in the ﬁrst black/blank line after the

EOF line and falls at the end of data in the SOF line.

The FST output is tri-stated either when OEB is driven high or via the appropriate control bit in the serial interface, (see

data_format register[22]).

The configuration details for FST can be found in fg_mode register[20].

Video Mode

pck’s

CIF

5.25

4.000

QCIF (both pan tilt and sub sampled,

16Mhz clock)

6.00

15.00

QCIF (both pan tilt and sub sampled,

8Mhz clock)

6.00

15.00

PAL

4.652

5.962

NTSC

4.714

2.095

Table 18 : LST Timing

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