Overview

The AK8858 is a single-chip digital video decoder for composite, s-video, 525i/625i component and 525p/625p component video signals. Its output data is in YCbCr and RGB format. Its pixel clock is generated internally and synchronized with the input signal. Microprocessor access is via I2C interface.

Features

■ Decodes composite and S-Video signals NTSC/ PAL-B, D, G, H, I, N, Nc, M, 60 /SECAM

■ Decode 525i / 625i YPbPr component video signals

■ Decode 525p / 625p YPbPr component video signals

■ 10 input channel

■ 10-bit 54MHz ADC 2 channel

■ Internally built PLL

■ Internal analog bandwidth filter

■ Programmable Gain Amp (PGA) (-3.25dB～ 10dB)

■ Adaptive automatic Gain Control (AGC)

■ Auto Color Control (Composite and S-Video signals)

■ Image adjustment (Contrast, Brightness, Saturation, HUE, Sharpness)

■ Automatic input signal detection (NTSC/ PAL/ SECAM detect、 Interlace/ Progressive detect)

■ Adaptive 2-D Y/C separation

■ Output data format

YCbCr 4:2:2 or RGB 8:8:8

■ Output interface

(YCbCr)

Interlace: ITU-R BT.656 (8bit 27MHz) and 16bit 13.5MHz with EAV/ SAV

Progressive: 16bit 27MHz and 8bit 54MHz with EAV/ SAV

(RGB)

Interlace: 8bit:8bit:8bit 13.5MHz with EAV/ SAV

Progressive: 8bit:8bit:8bit 27MHz with EAV/ SAV

*EAV/ SAV output can be disabled via register

■ HD, VD, DVALID and FIELD (VD, DVALID, FIELD can be select up to 2 output via register setting)

■ Closed Caption / WSS / CGMS-A signal decoding (output via register).

■ Macrovision signal detection (Rovi certification)

■ I2C control

■ Powerdown function

■ Internal VREF

■ Core supply voltage: 1.70～2.00V

■ I/O power supply: 1.70～3.60V

■ Operating temperature: ?40°C～105°C

■ 80-pin LQFP package (12.0mm x 12.0mm)

AK8858屬于集成電路（IC） > 編碼器，解碼器，轉(zhuǎn)換器。旭化成微電子株式會社制造生產(chǎn)的AK8858編碼器，解碼器，轉(zhuǎn)換器該系列產(chǎn)品可用于將信息封裝或編碼為適合于傳輸或存儲的格式，和/或在通信路徑的另一端執(zhí)行逆運(yùn)算，通常是通過使用某些形式的調(diào)制過程。示例包括從數(shù)字?jǐn)?shù)據(jù)生成模擬視頻信號的器件（反之亦然）；基于傳輸目的對按鈕的狀態(tài)進(jìn)行編碼的器件（實(shí)現(xiàn)遠(yuǎn)程控制功能）；以及便于將標(biāo)準(zhǔn) UART 連接到標(biāo)準(zhǔn)紅外收發(fā)器的器件。