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TS13102 Arkusz danych(PDF) 7 Page - Semtech Corporation |
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TS13102 Arkusz danych(HTML) 7 Page - Semtech Corporation |
7 / 16 page TS13102 Final Datasheet Rev 2.3 28 July 2016 7 of 16 Semtech Proprietary & Confidential Switch Commands The (C3 C2 C1 C0) field sent using the CLK pin determines the command sent to the switch. The following commands are defined: C3 C2 C1 C0 Command 0 0 0 0 Not allowed (No Operation) 0 0 0 1 OFF, Immediate 0 0 1 0 OFF, Zero Crossing 0 0 1 1 ON, Immediate 0 1 0 0 ON, Zero Crossing 0 1 0 1 ON, Immediate, with Dithering 0 1 1 0 ON, Zero Crossing, with Dithering 0 1 1 1 Heartbeat 1 0 0 0 Not allowed (No Operation) 1 0 0 1 Not allowed (No Operation) 1 0 1 0 Not allowed (No Operation) 1 0 1 1 Not allowed (No Operation) 1 1 0 0 Not allowed (No Operation) 1 1 0 1 Not allowed (No Operation) 1 1 1 0 Not allowed (No Operation) 1 1 1 1 Poll State (No Operation) Table 2: Valid Commands Each switch monitors the CLK line regardless of the address; however only the device with the (AD2 AD1 AD0) pins configured to match the (A2 A1 A0) field sent via the CLK pin will respond to the Command bits (C3 C2 C1 C0). If two or more devices on the CLK bus have address pins wired alike, those devices will all respond to the same command. However, doing this may lead to DATA bus conflicts when the device Status Values are reported. The command is executed after the status values are shifted out to avoid interference on the status values caused by transients in the system. ON Commands Four modes of closing the switch are available: 1. ON, Immediate: When this command sequence is sent, the switch will be closed after the status values are shifted out. The system must comprehend the time it takes to complete the sequence in order to place the switch in the closed state at the desired time. 2. ON, Zero Crossing: When this command sequence is sent, the switch will close on the first occurrence of a polarity change in the voltage across the switch (VSW1-VSW2 changes sign to indicate a voltage zero-crossing) after the switch receives the command and the status values are shifted out. This should not be used for DC applications. 3. ON, Immediate with Dithering: This command closes the switch as in ON, Immediate, above, but puts the device into Dither mode as well. Dithering opens the switch after an interval of TDRTY for a period of time, TDOFF when the system voltage drops below VDON. This allows the CSYS capacitor to be re-charged. See the Dither Functionality section for more details. 4. ON, Zero Crossing with Dithering: This command closes the switch as in ON, Zero Crossing, but enables the Dither mode as described above. OFF Commands Two modes of opening the switch are available: 1. OFF, Immediate: When the OFF, Immediate sequence is sent, the switch will transition to the open state after the status values are shifted out. 2. OFF, Zero Crossing: When the OFF, Zero-Crossing sequence is received, the switch will open on the first occurrence of the load-current dropping within ITURN_OFF after the status values are shifted out. |
Podobny numer części - TS13102 |
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Podobny opis - TS13102 |
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