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STC-A33A

Command No.

Command Descriptions

12H:

MOD3[7…0]

[The camera function mode 3] Initial data: MOD3[7…0] = 0

This sets the following camera function modes.

D[7…0]

D7 to D5:

No function

Always set “000”

D4 to D3

Exposure start mode

00: Normal

10 to 11 reset,

01: No function (Prohibited setting. Do not set these values)

D2:

No function

Always set “0”

D1 to D0:

Gamma mode

00: 1.0

01: 0.45

10 to 11: 1.0

13H:

MOD4[7…0]

[The camera function mode 4] Initial data: MOD4[7…0] =1

This sets the following camera function modes.

D[7…0]

D7 to D4:

No function

Set always “0000”

D3 to D0:

External sync

phase adjust

0111: 7CLK

0110: 6CLK

0101: 5CLK

0100: 4CLK

0011: 3CLK

0010:2CLK

0001: 1CLK

0000: 0CLK

1111: -1CLK,

1110:-2CLK

1101: -3CLK

1100: -4CLK

1011: -5CLK

1010:-6CLK

1001: -7CLK

1000: -8CLK

14H:

UART[7…0]

[The communication mode] Initial data: UART[7…0] = 0

This sets the following camera function modes.

D[7…0]

D7 to D2:

No function

Always set “000000”

D1 to D0:

Baud rate

00: 38,400bps

01: 9,600bps

10 to 11: No function

(Prohibited setting. Do not set these values)

20H:

SVR[7…0]

21H:

SVR[15…8]

[The exposure time (H) of the electronic shutter]

Initial data: SVR[15…0] = 0, data range: 0 to 4095

This and SHR[15…0] set the preset shutter speed (or CCD exposure time) for the electronic shutter.

The preset shutter speed is defined by the following formula:

Preset Shutter Speed = SVR[15…0] x (1H cycle time) + SHR[15…0] x (1CLK cycle time)

Notes:

1. The data in 20H through 23H reflects to the present shutter speed.

2. The camera works with the shutter off (maximum shutter speed) when both SVR[] and SHR[] are set to 0.

3. The camera works with the minimum shutter speed when this value is set to 0 and SHR[] is set between 1

and 306.

4. The value replaces by 4095 automatically when this value is set to greater than 4095.

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