CXD2463 Ver la hoja de datos (PDF) - Sony Semiconductor

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componentes Descripción

Fabricante

CXD2463

Timing Controller for CCD Camera

Sony Semiconductor 

CXD2463R

3. External Sync Function

The CXD2463R supports the three modes of Line-Lock, VReset + HPLL (VD and HD inputs), and VReset +

HPLL (Sync input) as the external sync functions. Each mode is automatically switched according to the

combination of signals input to EHD/SYNC (Pin 38) and EVD (Pin 37).

1) Automatic External Sync Discrimination

I/O

Symbol

Pin

No.

EHD/SYNC and EVD pins signal input state

and HVDET and EXT pins discrimination results

I EHD/SYNC 38

HD

No signal

HD

SYNC

No signal

I EVD

37 No signal

VD

VD

HD after SYNC

separation

No signal

O HVDET

33

L

H

L

L

L

O EXT

34

L

H

H

H

L

Mode

INT

LL

VReset

+ HPLL

VReset

+ HPLL

INT

• If unspecified signals are input for the external signals given above, there may be recognition errors.

2) LL (Line-Lock) Mode

When the V sync clock is externally input to EVD (Pin 37), the result of comparing the falling edge of the clock

and the falling edge of the internal VD is output from COMP (Pin 39). The output polarity is compatible with the

active filter.

EXT-VD

(Pin 37)

INT-VD

(Pin 35)

COMP

(Pin 39)

High impedance state

– 13 –

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