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L9374LF Datasheet(PDF) 4 Page - STMicroelectronics |
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L9374LF Datasheet(HTML) 4 Page - STMicroelectronics |
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4 / 80 page ![]() Contents L9374LF 4/80 DocID025414 Rev 1 5 Programmers guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 5.1 Command registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 5.1.1 Sync + Sync-trigger register (address 0) . . . . . . . . . . . . . . . . . . . . . . . . 57 5.1.2 Sync tolerance window (STW) register (address 1) . . . . . . . . . . . . . . . 58 5.1.3 Configuration register 1 (address 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 5.1.4 Fast switch-on (FSON) register (address 3) . . . . . . . . . . . . . . . . . . . . . 60 5.1.5 Duration registers (address 4 and 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5.1.6 Duty cycle register (address 6 to 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5.1.7 Current / duty cycle registers (address 10 to 13) . . . . . . . . . . . . . . . . . . 62 5.1.8 Configuration register 2 - current control / over-voltage threshold (address 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 5.1.9 Configuration register 3 (CCV reset and load resistance values) (address 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.2 Status registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 5.2.1 General status (address 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 5.2.2 Output status Q1... Q4 (address 1 to 4) . . . . . . . . . . . . . . . . . . . . . . . . . 66 5.2.3 VD (address 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5.2.4 Output duty (address 6 and 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5.2.5 ISAT-Qx (address 8 + 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 5.2.6 Reference diode voltage measurement (V_FWD) (address 10) . . . . . . 71 5.2.7 Sense resistor measurement (Rs) (address 11) . . . . . . . . . . . . . . . . . . 71 5.2.8 Current controller status register (CC-STATUS) (address 12) . . . . . . . . 72 5.2.9 Error average (address 13 + 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5.2.10 Reserved (address 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 6 Register block functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 6.1 Input command register block overview (MOSI data) . . . . . . . . . . . . . . . 74 6.2 Status register block overview (MISO data) . . . . . . . . . . . . . . . . . . . . . . . 76 7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 |
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