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33480 Datasheet(PDF) 31 Page - Freescale Semiconductor, Inc |
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33480 Datasheet(HTML) 31 Page - Freescale Semiconductor, Inc |
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31 / 39 page  Analog Integrated Circuit Device Data Freescale Semiconductor 31 33480 FUNCTIONAL DESCRIPTION PROTECTION AND DIAGNOSIS FEATURES PREVIOUS ADDRESS SOA[1:0]=00 If the previous two LSBs are 00, bits OD15:OD0 reflect the output status (Table 12). PREVIOUS ADDRESS SOA[1:0]=01 If the previous two LSBs are 01, bits OD15:OD0 reflect reflect the temperature status (Table 13). PREVIOUS ADDRESS SOA[1:0]=10 If the previous two LSBs are 01, bits OD15:OD0 reflect the status of the 33480 (Table 14). PREVIOUS ADDRESS SOA[1:0]=11 Null Data. No previous register Read Back command received, so bits OD9:OD0 are null. Table 12. Output Status OD15 OD14 OD13 OD12 OD11 OD10 OD9 OD8 OD7 OD6 OD5 OD4 OD3 OD2 OD1 OD0 0 0 UVF OTW OTS NM OL5 OVL5 OL4 OVL4 OL3 OVL3 OL2 OVL2 OL1 OVL1 OD13 (UVF) = Undervoltage Flag on Vbat OD12 (OTW) = Overtemperature Prewarning Flag OD11 (OTS) = Overtemperature Flag for all outputs OD10 (NM) = Normal mode OD9, OD7, OD5, OD3, OD1 (OL5, OL4, OL3, OL2, OL1) = Open Load Flag at Outputs 5 through 1, respectively. OD8, OD6, OD4, OD2, OD0 (OVL5, OVL4, OVL3, OVL2, OVL1) = Overload Flag for Outputs 5 through 1, respectively.This corresponds to overtemperature or OCHI or OCLO faults. Note A logic [1] at bits OD9:OD0 indicates a fault. If there is no fault, bits OD9:OD0 are logic [0]. OVL=OCHI1+OCHI2+OCLO Table 13. Overload Status OD15 OD14 OD13 OD12 OD11 OD10 OD9 OD8 OD7 OD6 OD5 OD4 OD3 OD2 OD1 OD0 0 1 UVF OTW OTS NM OC5 OTS5 OC4 OTS4 OC3 OTS3 OC2 OTS2 OC1 OTS1 OD13 (UVF) = Undervoltage Flag on Vbat OD12 (OTW) = Overtemperature Prewarning Flag OD11 (OTS) = Overtemperature Flag for all outputs OD10 (NM) = Normal mode OD9, OD7, OD5, OD3, OD1 (OC5, OC4, OC3, OC2, OC1) = High Overcurrent Shutdown Flag for Outputs 5 through 1, respectively OD8, OD6, OD4, OD2, OD0 (OTS5, OTS4, OTS3, OTS2, OTS1) = Overtemperature Flag for Outputs 5 through 1, respectively Note A logic [1] at bits OD9:OD0 indicates a fault. If there is no fault, bits OD9:OD0 are logic [0]. OC=OCHI1+OCHI2 Table 14. Device Status OD15 OD14 OD13 OD12 OD11 OD10 OD9 OD8 OD7 OD6 OD5 OD4 OD3 OD2 OD1 OD0 1 0 UVF OTW OTS NM 0 0V X X X RC 0 FLASH ER pin IGN pin CLOCK fail OD13 (UVF) = Undervoltage Flag on Vbat OD12 (OTW) = Overtemperature Prewarning Flag OD11 (OTS) = Overtemperature Flag for all outputs OD10 (NM) = Normal mode OD4 (RC) = Logic [0] indicates a Front Corner Light Switch. Logic [1] indicates a Rear Corner Light Switch OD2 (FLASHER pin) = Indicates the FLASHER terminal state in real time OD1 (IGN pin) = Indicates the IGN terminal state in real time OD0 (CLOCK fail) = Logic [1], which indicates a clock failure OD8 (Overvoltage) = Overvoltage Flag on Vbat in real time |
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