ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 42

Manufacturer Part Number

ak8823

Description

Hdtv & Ntsc/pal Multi-format Encoder Sdtv/hdtv X2 Oversampling 5ch Dacs

Manufacturer

AKM Semiconductor, Inc.

Datasheet

1.AK8823.pdf (80 pages)

ASAHI KASEI

15-4. Adjustable Timing Function Between SYNC Signal and HDY Signal, and Between HDPB Signal and

HDPR Signal ( HD )

SYNC Timing and HDY signal output relation is adjustable in the AK8823.

Setting of adjustable amount is made by [ HDYPBPR Delay Register ].

Adjustable range between SYNC signal and HDY signal is + / _ 3 clocks.

Adjustable unit in 525i / p modes is based on 27MHz clock, and in 1080i / 720p modes, it is based on 74.25MHz clock.

By this bit manipulation, HDPb / HDPr are shifted similarly as in the case of HDY.

MS0549-E-02

(default)

Adjustable range is +/- 3clocks.

HDPb / HDPr signals with HDY signal relation are adjusted by Sub Address 0x02 [ HDYPBPR Delay Register ].

Adjustable unit in 525i / p modes is based on 27MHz clock, and in 1080i / 720p modes, it is based on 74.25MHz.

HDY

SYNC Signal and HDY Signal relation

244T @ 60Hz / 264T @ 50Hz

122T @ 60Hz / 132 @ 50Hz

3clk 3clk

192T @ 60Hz / 50Hz

In 525p / 625p Input Mode

In 1080i @ 60 Hz / 50 Hz Input Mode

In 525i / 625i Input Mode

HDPb/HDPr

HDY

T : 27 MHz

HDY Signal and HDPb / HDPr Signal relation

T : 27 MHz

HDY Signal and HDPb / HDPr Signal relation

T : 74.25 MHz

3clk 3clk

27MHz-clock

2006/10

[AK8823]