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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AK2400 Fiches technique(PDF) 9 Page - Asahi Kasei Microsystems |
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AK2400 Fiches technique(HTML) 9 Page - Asahi Kasei Microsystems |
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9 / 52 page  [AK2400] 014008989-E-01 9 2015/4 Digital AC Timing 1) Serial Interface Timing AK2400 is connected to a CPU by three-wired interface through CSN, SCLK, SDATAIN and SDATAOUT pins, which can make reading and writing data for control registers. Serial data named SDATAIN is consist of 1-bit read and write instruction(R/W), 5-bit address (A4 to A0) and 18-bit data(D17 to D0) in one frame. Write mode Read mode Figure 3 Serial Interface Timing R/W : Instruction bit controls to write data to AK2400 or read back from it. When set to low, AK2400 is in write mode. When set to high, AK2400 is in read mode. A4 to A0 : Register address to be accessed. D17 to D0 : Write or read date to be accessed. <1> CSN(Chip select) is normally selected high for disable. When CSN is set to low, serial interface becomes active. <2> In write mode, instruction, address and data input from SDATAIN pin are synchronized and latched with the rising edge of 24 iterations of SCLK clock. Set to low between address A0 and data D17.Input data is fixed synchronized with the rising edge of 24th clock. Note that if CSN become “H” before 24th clock, setting data becomes invalid. During the period when CSN is set to “L”, consecutive writing is available. <3> In read mode, instruction and address are synchronized and latched with the rising edge of 6 iterations of SCLK clock. And the register data are output from SDATAIN pin synchronized with the falling edge of 18 iterations of SCLK clock. CSN to “H” once reading is completed because consecutive reading is not valid. Also, in read mode DETO/SDATAOUT pin should be set to SDATAOUT by {SDATAOUT_OE }=”1”. CSN SCLK t CSS t WH t WL t DH t DS A4 A3 A2 A0 D16 D15 D0 D1 t CSLH t CSHH D17 R/W SDATAIN (Input) CSN SCLK SDATAIN (Input) t CSS t WH t WL R/W A4 A3 A2 A0 SDATAOUT (Output) t CSLH D16 D15 D0 D1 D17 t DD |
Numéro de pièce similaire - AK2400 |
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Description similaire - AK2400 |
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