CXD2452R Ver la hoja de datos (PDF) - Sony Semiconductor

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CXD2452R

Timing Generator for Progressive Scan CCD Image Sensor

Sony Semiconductor 

CXD2452R

Description of Operation

All pulses output from the CXD2452R are controlled by the RST and DSGAT pins and by the serial interface

data shown below. The details of control by the serial interface data and a description of operation are as

follows.

SSI

00 01 02 03 04 05 06 07 08 09 10 11 58 59 60 61 62 63 64 65 66 67 68 69 70 71

SSK

SEN

The CXD2452R basically loads and reflects the serial interface data sent in the above format in the readout

portion at the falling edge of HRI. Here, readout portion specifies the horizontal interval during which XSG1

rises.

There are two types of serial interface data: drive control data and phase adjustment data. Hereafter, these

data are distinguished by referring to the former as control data and the latter as adjustment data.

An example of the initialization data for the CXD2452R control data is shown below. This data is based on the

Application Circuit Block Diagram, so care should be taken as there are some differences from the RST pin

initialization data. Concretely, the internal SSG operates, the XCLPOB and ID pulses are generated, and the

3/2 MCK pulse is stopped. This data shows the values when the EBCKSM pin is low and D64 to D71

CHKSUM is valid.

MSB

LSB

D71 D70 D69 D68 D67 D66 D65 D64 D63 D62 D61 D60 D59 D58 D57 D56

10 10 1 101 0 00 0 0010

MSB

LSB

D55 D54 D53 D52 D51 D50 D49 D48 D47 D46 D45 D44 D43 D42 D41 D40

11 01 0 000 0 00 0 0000

MSB

LSB

D39 D38 D37 D36 D35 D34 D33 D32 D31 D30 D29 D28 D27 D26 D25 D24

00 00 0 000 0 00 0 0000

MSB

LSB

D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D09 D08

00 00 0 000 0 00 0 0000

MSB

LSB

D07 D06 D05 D04 D03 D02 D01 D00

10 00 0 001

The adjustment data does not normally need to be set. However, when adjustment is difficult due to the

system configuration or for other reasons, the data considered most appropriate at that time should be set as

the initialization data.

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