ML6461CS 查看數據表（PDF） - Micro Linear Corporation

零件编号

产品描述 (功能)

生产厂家

ML6461CS

CCIR656 NTSC Video Encoder

Micro Linear Corporation 

ML6461

FUNCTIONAL DESCRIPTION (Continued)

PIXEL SYNCHRONIZATION

Master Mode

In this mode, the active edge of horizontal sync pulse

through the HSYNC pin (configured as an output)

indicates the beginning of an active video line (or the

beginning of the horizontal blanking) and the multiplexed

YCrCb pixel data must be synchronized to this edge for

proper video location, as well as the proper

demultiplexing of YCrCb values. This synchronization, as

shown in Figures 4 through 5a, is controlled by

SEL_HSYNC1 (B14) and SEL_HSYNC0 (B13). Figures 4

and 4a show synchronization for active edge at the

beginning of active video for positive or negative HSYNC

polarity while Figures 5 and 5a show synchronization for

active edge at the beginning of horizontal blanking for

positive or negative HSYNC polarity.

H

FIELD (1,2 and 3,4)

L

H

FIELD (ODD/EVEN)

L

ANALOG FIELDS 1 & 2

ANALOG FIELDS 3 & 4

ODD

EVEN

ODD

EVEN

Figure 2a. FIELD Pin Output Summary

ANALOG FIELDS 1 & 2

ODD

EVEN

10

HSYNC

VSYNC

active edge of HSYNC

active edge of VSYNC

–32 pixels

64 pixels

coincident interval

for HRESET_MODE=0

HSYNC

active edge of HSYNC

VSYNC

active edge of VSYNC

64 pixels

coincident interval

for HRESET_MODE=1

Figure 3. Coincident Valid Sync Intervals for External Slave Mode

Share Link: