CXD2401R Ver la hoja de datos (PDF) - Sony Semiconductor

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CXD2401R

Electronic Iris Control IC

Sony Semiconductor 

CXD2401R

Description of Operation

The operations of the CXD2401R are described below.

Control pin

Detailed description

NTSC

(Pin 48)

Low: The CXD2401R performs control drive in accordance with NTSC. In this case, the

CXD2401R operates by assuming the signals input to Pin 7 (VD) and Pin 8 (HD) are

NTSC sync signals.

High: The CXD2401R performs control drive in accordance with PAL. In this case, the

CXD2401R operates by assuming the signals input to Pin 7 (VD) and Pin 8 (HD) are PAL

sync signals.

Refer to the "Timing Chart" for the control drive pulse for either NTSC or PAL.

ENB

(Pin 43)

Low: Pin 30 (XSUB) is always High. That is, the electronic iris and electronic shutter to which

XSUB pulses are applied suspend operation (electronic iris and electronic shutter OFF).

High: Pin 30 (XSUB) outputs control pulses for the electronic iris and electronic shutter.

(electronic iris and electronic shutter ON).

IRENB

(Pin 44)

Low: Realizes the electronic shutter control.

High: Realizes the electronic iris control.

The control pins (SPUPV, IRIN, and SPDNV) are used in common for both electronic shutter

control and electronic iris control. The operations of these pins differ depending on the state of

IRENB pin.

PS

(Pin 45)

This pin is valid when the operation of electronic shutter is assigned (IRENB = Low).

Low: Electronic shutter speed can be controlled by inputting serial data into SPUPV, IRIN, and

SPDNV pins.

High: Electronic shutter speed can be controlled by inputting parallel data into SPUPV, IRIN,

and SPDNV pins.

Note) The PS pin is invalid when IRENB = High, and the CXD2401R does not accept data,

whether PS is Low or High.

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