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33905 Datasheet(PDF) 37 Page - Freescale Semiconductor, Inc |
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33905 Datasheet(HTML) 37 Page - Freescale Semiconductor, Inc |
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37 / 91 page  Analog Integrated Circuit Device Data Freescale Semiconductor 37 33904/5 FUNCTIONAL DEVICE OPERATION FUNCTIONAL BLOCK OPERATION VERSUS MODE FUNCTIONAL BLOCK OPERATION VERSUS MODE The 5V-CAN default is ON when the device is powered-up and set in Debug Mode. It is fully controllable via the SPI command. ILLUSTRATION OF DEVICE MODE TRANSITIONS. Figure 19. Power Up Normal and Low Power Modes Table 6. Device Block Operation for Each State State VDD 5V-CAN I/Ox / WU VAUX CAN LIN1/2 Power down OFF OFF OFF OFF High-impedance High-impedance Init Reset ON OFF HS/LS off Wake up disable OFF OFF: CAN termination 25k to gnd Transmitter / receiver /wake-up OFF OFF: internal 30k pull up active. Transmitter: receiver / wake up OFF. LIN term OFF INIT ON OFF SPI config WU disable OFF OFF OFF Reset ON Keep SPI config HS/LS off WU disable OFF OFF OFF Normal Request ON Keep SPI config HS/LS off WU disable OFF OFF OFF Normal ON SPI config SPI config WU SPI config SPI config SPI config SPI config Low power VDD OFF OFF OFF user defined WU SPI config OFF OFF + wake-up en/dis OFF + wake-up en/dis Low power VDD ON ON(21) OFF user defined WU SPI config OFF OFF + wake-up en/dis OFF + wake-up en/dis SAFE output low: Safe case A safe case A:ON safe case B: OFF A: Keep SPI config, B: OFF HS/LS off wake-up by change state OFF OFF + wake-up enable OFF + wake-up enable FLASH ON SPI config SPI config SPI config SPI config OFF Notes 21. With limited current capability 22. 5V-CAN is ON in Debug mode. VSUP VDD RST INT SPI MODE Vdd-uv (4.5V typ) RESET INIT Series of SPI Single SPI NORMAL BATFAIL 5V-CAN >4V VAUX A Power up to Normal Mode B s_11: write INT registers s_1: go to Normal Mode Vdd-uv NORMAL LP VDD Off C s_2: go to Low Power VDD OFF Mode s_12: Low Power Mode configuration B Normal to Low Power VSUP VDD RST INT SPI 5V-CAN VAUX legend: NORMAL LP VDD On D B Normal to Low Power VSUP VDD RST INT SPI 5V-CAN VAUX s_13: Low Power Mode configuration s_3: go to Low Power Mode VDD OFF Mode VDD ON Mode |
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