Atmel CAMELIA 8M Bedienungsanleitung PDF herunterladen (Seite 8)

CAMELIA 8M Digital Camera

1986B–IMAGE–03/03

Electrical Interfaces

Digital I/O Specifications

LVDS drivers/receivers:

• LVDS: Low Voltage differential Signal. (EIA 644 standard). All digital I/Os are

differential: (signal+, signal-). Specifications are given for signal +.

• Manufacturer NS.

• Driver: DS90C031TM (SO16 package).

• Receiver: DS90C032TM (SO16 package).

Table 4. Digital I/O Specifications

Symbol I/O Definition

Leve

TRIG_ITC I Timing control:

- TRIG_ITC is either an external trigger or "integration

time control" depending on the timing mode configured

via RS232.

Operation with external trigger:

- TRIG_ITC = TRIG

Operation with "integration time control":

- TRIG_ITC = ITC

- TRIG_ITC is synchronized by the camera line clock

(jitter: 104 µs)

LVDS

PDATA(11..0) O Digital video output: 12-bit LVDS

FEN O Frame enable:

- FEN = 0: frame data valid: active lines

- FEN = 1: frame data not valid

LVDS

LEN O Line enable:

- LEN = 0: line data valid: active pixels

- LEN = 1: line data not valid

LVDS

PCK O Pixel clock LVDS

SHUTTER O Shutter open/close:

- during integration: shutter = 1

- during readout: shutter = 0

Delay between the falling edge of shutter and the start of

readout:

- 4 positions: 1 ms, 5 ms, 10 ms, 20 ms (set via

RS232).

LVDS

COLOUR_I(1..0) I Color selection of the next frame (in color mode):

- "00": red

- "01": green

- "10": blue

LVDS

COLOUR_O(1..0) O Color identification of the current frame (in color mode):

- "00": red

- "01": green

- "10": blue.

LVDS

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 20 21

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