608~剛入手(新加相...新入窮門...見諒)

cfsdms · 發表於 2010-5-17 08:21

有新玩具

kennethtcp · 發表於 2010-5-17 10:42

HDMI 唔可以hot plug, hot plug會跳火,到時燒咗塊HDMI板真係欲哭無淚
babuwa 發表於 2010-5-16 09:46

HDMI 係 support Hot plug 的, 為左可以 hot plug, HDMI Receiver IC 都設有 protection diode, 防止一插入去果下個 high voltage transisent, 亦要防靜電, 可以參考下 :

extracted from: 'http://www.networksystemsdesignline.com/showArticle.jhtml?printableArticle=true&articleId=192503738'
The HDMI 1.3 specification supports the demand of future HD display devices for higher resolution and higher frame rates with a color depth up to 48-bit by doubling bandwidth from 165 MHz (4.95 Gbps) to 340 MHz (10.2 Gbps) of the previous HDMI 1.2 specification. The hot-plugging capability of HDMI ports makes ESD protection a must. In this paper, various ESD protection options are investigated, and a fully-integrated interface IC providing highest ESD- and back drive protection as well as the required level shifting for the I2C, CEC and hot-plug lines is presented. With only 0.7-pF total line capacitance, the NXP Semiconductors IP4776CZ38 provides the highest signal integrity for HDMI 1.3 ports and enables designers to pass HDMI compliance testing easily.

另有一粒 NXP (即係以前 Philips) HDMI Receiver IC spec 可供參考, 第一段已經寫得清楚:
http://www.nxp.com/documents/data_sheet/IP4778CZ38.pdf

我上份工都設計過有 HDMI input 的 products, 跟 HDMI 個 spec, 佢已經做到好 robust, 唔係話完全唔會瓜, 一般 user hot plug 都唔會燒, 當然, 熄哂機插就更加好