WM8216SEFLSLASHR datasheet(14/27 Pages) WOLFSON

14 / 27 page

WM8216

Production Data

PD Rev 4.0 March 2007

MCLK

VSMP

RSMP

RLC switch control,

"CLMP"

(RLCEN=1,CLMPCTRL=1)

RLC switch closed when RSMP=1 &&

VSMP=1 (during "black" pixels)

Video and reference sample

taken on fallling edge of VSMP

INPUT VIDEO

SIGNAL

unstable

reference level

dummy or

"black" pixel

video level

Figure 9 Reset Level Clamp Operation (CLMPCTRL=1), non-CDS mode only

RLCEN

CLAMPCTRL

OUTCOME

USE

RLC is not enabled. RLC switch is always open.

When input is DC coupled and within supply

rails.

RLC switch is controlled directly from RSMP input

pin:

RSMP=0: switch is open

RMSP=1: switch is closed

When user explicitly provides a reset sample

signal and the input video waveform has a

suitable reset level.

VSMP applied as normal, RSMP is used to

indicate the location of black pixels

RLC switch is controlled by logical combination of

RSMP and VSMP:

RSMP && VSMP = 0: switch is open

RSMP && VSMP = 1: switch is closed

When clamping during the video period of black

pixels or there is no stable per-pixel reference

level.

Table 2 Reset Level Clamp Control Summary

WM8216SEFL/R Datasheet(PDF) 14 Page - Wolfson Microelectronics plc

WM8216SEFL/R Datasheet(HTML) 14 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Datasheet Download

Link URL