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TUSB422IYFPR Datasheet(PDF) 53 Page - Texas Instruments |
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TUSB422IYFPR Datasheet(HTML) 53 Page - Texas Instruments |
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53 / 71 page  53 TUSB422 www.ti.com SLLSEW6 – NOVEMBER 2016 Product Folder Links: TUSB422 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 7.6.53 VBUS Voltage Alarm High Config Byte 0 Register (address = 0x76) [reset = 0x00] This register contains the lower 8 bits of the 10-bit VBUS Voltage Alarm High Configuration register. When DISABLE_VOLTAGE_ALARMS = 1’b0, a VBUS voltage higher than value programmed into this register will cause VBUS_ALARM_HI alert flag to get set. This threshold is always enabled. SW needs to program to a value greater than VBUS to prevent VBUS_ALARM_HI alert from continuously being set. Figure 61. VBUS Voltage Alarm High Config Byte 0 Register 7 6 5 4 3 2 1 0 VBUS_ALARM_HIGH_THRESHOLD[7:0] RW LEGEND: R/W = Read/Write; R = Read only Table 58. VBUS Voltage Alarm High Config Byte 0 Register Descriptions Bit Field Type Reset Description 7:0 ReservedVBUS_ALARM_HIGH_TH RESHOLD[7:0] RW 0x00 10-bit for voltage threshold with 25 mV LSB. ±5% accuracy. 7.6.54 VBUS Voltage Alarm High Config Byte 1 Register (address = 0x77) [reset = 0x00] This register contains the upper two bits of the 10-bit VBUS Voltage Alarm High Configuration register. When DISABLE_VOLTAGE_ALARMS = 1’b0, a VBUS voltage higher than value programmed into this register will cause VBUS_ALARM_HI alert flag to get set. This threshold is always enabled. SW needs to program to a value greater than VBUS to prevent VBUS_ALARM_HI alert from continuously being set. Figure 62. VBUS Voltage Alarm High Config Byte 1 Register 7 6 5 4 3 2 1 0 Reserved VBUS_ALARM_HIGH_THRESH OLD[9:8] R RW LEGEND: R/W = Read/Write; R = Read only Table 59. VBUS Voltage Alarm High Config Byte 1 Register Descriptions Bit Field Type Reset Description 7:2 Reserved R 0x00 Reserved 1:0 VBUS_ALARM_HIGH_THRESHOL D[9:8] RW 0x00 10-bit for voltage threshold with 25 mV LSB. ±5% accuracy. 7.6.55 VBUS Voltage Alarm Low Config Byte 0 Register (address = 0x78) [reset = 0x00] This register contains the lower 8 bits of the 10-bit VBUS Voltage Alarm Low Configuration register. When DISABLE_VOLTAGE_ALARMS = 1’b0, a VBUS voltage lower than value programmed into this register will cause VBUS_ALARM_LO alert flag to get set. Figure 63. VBUS Voltage Alarm Low Config Byte 0 Register 7 6 5 4 3 2 1 0 VBUS_ALARM_LOW_THRESHOLD[7:0] RW LEGEND: R/W = Read/Write; R = Read only Table 60. VBUS Voltage Alarm Low Config Byte 0 Register Descriptions Bit Field Type Reset Description 7:0 VBUS_ALARM_LOW_THRESHOL D[7:0] RW 0x00 10-bit for voltage threshold with 25 mV LSB. ±5% accuracy. |
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