I2C ke eng
I2C ke protocol ea serial e sebelisoang bakeng sa segokanyimmediamentsi sa mehala e 'meli ho hokahanya lisebelisoa tse lebelo le tlase joalo ka li-microcontrollers, EEPROMs, A/D le D/A converters, I/O interfaces, le lisebelisoa tse ling tse ts'oanang le lits'ebetso tse kentsoeng. Ke li-synchronous, li-multi-master, makhoba a mangata, li-packet switching, libese tsa puisano tse sa feleng tse qapiloeng ke Philips Semiconductors (hona joale ke NXP Semiconductors) ka 1982.
I²C e sebelisa li-Drains tse peli tsa Open Drains (data ea serial (SDA) le serial clock (SCL)) 'me e sebelisa lihanyetsi ho phahamisa bokhoni. I²C e lumella mefuta e mengata ea motlakase ea ho sebetsa, empa boemo ba motlakase bo tloaelehileng ke +3.3V kapa +5v.
Moralo oa litšupiso oa I²C o sebelisa sebaka sa liaterese tsa 7-bit empa o na le liaterese tse 16, kahoo o khona ho buisana le li-node tse fihlang ho 112 sehlopheng sa libese [a]. Bese e tloaelehileng ea I²C e na le mekhoa e fapaneng: mokhoa o tloaelehileng (100 kbit/s), mokhoa oa lebelo le tlase (10 kbit/s), empa maqhubu a oache a ka lumelloa ho theohela ho zero, ho bolelang hore puisano e ka emisoa. Moloko o mocha oa libese tsa I²C o ka buisana le li-node tse ngata (tse tšehetsang sebaka sa liaterese tsa 10-bit) ka lebelo le potlakileng: mokhoa o potlakileng (400 kbit/s), mokhoa o potlakileng oa ho kopanya (1 Mbit/s), mokhoa oa lebelo le phahameng (3.4 Mbit). /s), mokhoa o potlakileng haholo (5 Mbit/s).
I²S ke eng?
I²S (Inter-IC Sound) ke maemo a elektroniki a serial bus interface a sebelisetsoang ho hokahanya lisebelisoa tsa audio tsa dijithale hammoho, maemo ana a ile a hlahisoa ka lekhetlo la pele ke Philips Semiconductor ka 1986. E sebelisoa ho fetisetsa data ea audio ea PCM lipakeng tsa li-circuits tse kopaneng tsa lisebelisoa tsa elektroniki.
I2S Hardware Interface:
1. Mohala o monyenyane oa oache
Ka molao e bitsoa "Continuous Serial Clock (SCK)". Hangata e ngotsoe e le "bit clock (BCLK)".
Ke hore, karolo e 'ngoe le e' ngoe ea data e tsamaellanang le molumo oa dijithale, SCLK e na le pulse.
Maqhubu a SCLK = 2 × sampling frequency × palo ea likotoana tsa sampole.
2. Mola oa oache oa lentsoe
E tsejoang ka molao e le "khetho ea mantsoe (WS)". [Hangata e bitsoa "LRCLK" kapa "Frame Sync (FS)".
0 = kanale e ka letsohong le letšehali, 1 = kanale e nepahetseng
3. Bonyane mohala o le mong oa data o nang le multiplexed
E bitsoa "Serial Data (SD)", empa e ka bitsoa SDATA, SDIN, SDOUT, DACDAT, ADCDAT, joalo-joalo.
Setšoantšo sa nako sa I²S
