AL300 datasheet(43/64 Pages) ETC

43 / 64 page

AL300

November 28, 2001

Please refer to section 6.5 Input Video Timing for additional reference. The input timing diagram (AL300-

07) shows it pictorially.

20h:

Horizontal Capture Start Low (R/W) [CAPHSTART]

CapHStartL

<7:0> Bits<7:0> of horizontal capture start position (Unit: 1 pixel)

21h:

Horizontal Capture Start High (R/W) [CAPHSTART]

CapHStartH

<2:0> Bits <10:8> of horizontal capture start position

22h:

Horizontal Capture Size (R/W) [CAPHSIZE]

CapHSize

<7:0> Horizontal capture size (Unit: 8 pixels)

23h:

Testing (R/W) [RESETTEST]

Reserved

<7:0> Reserved

24h:

Vertical Capture Start Low (R/W) [CAPVSTART]

CapVStartH

<7:0> Bits <7:0> of vertical capture start position (Unit: 1 line)

25h:

Vertical Capture Start High (R/W) [CAPVSTART]

CapVStartL

<2:0> Bits <10:8> of vertical capture start position

26h:

Vertical Capture End Low (R/W) [CAPVEND]

CapVEndL

<7:0> Bits <7:0> of vertical capture end position (Unit: 1 line)

27h:

Vertical Capture End High (R/W) [CAPVEND]

CapVEndH

<2:0> Bits <10:8> of vertical capture end position

Registers #28h and #29h are used to control the delay of vertical lines between the output and the input.

The counterpart for horizontal delay is controlled by the registers #3Bh and #3Ch.

28h:

Vertical display Frame Start Position Low (R/W) [FRAMEVSTART]

FrameVStartL <7:0> Bits <7:0> of display vertical counter start position relative to input vertical

counter. (Unit: 1 line)

29h:

Vertical display Frame Start Position High (R/W) [FRAMEVSTART]

FrameVStartH <2:0> Bits <10:8> of display vertical counter start position relative to input vertical

counter.

Output timing:

Please refer to section 6.6 Output Video Timing for additional reference. The output timing diagram

(AL300-08) shows it pictorially.

30h:

Horizontal Total Low (R/W) [DSPHTOTAL]

DspHTotalL

<7:0> Bits <7:0> of display horizontal total. (Unit: 1 pixel)

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