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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM79 bảng dữ liệu(PDF) 26 Page - National Semiconductor (TI) |
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LM79 bảng dữ liệu(HTML) 26 Page - National Semiconductor (TI) |
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26 / 31 page  Functional Description (Continued) 13.4 Interrupt Status Register 1 — Address 41h Power on default <7:0> = 00h Bit Name Read/Write Description 0 IN0 Read Only A one indicates a High or Low limit has been exceeded. 1 IN1 Read Only A one indicates a High or Low limit has been exceeded. 2 IN2 Read Only A one indicates a High or Low limit has been exceeded. 3 IN3 Read Only A one indicates a High or Low limit has been exceeded. 4 Temperature Read Only A one indicates a High or Low limit has been exceeded. 5 BTI Read Only A one indicates an interrupt has occurred from the Board Temperature Interrupt (BTI) input (O.S. output of multiple LM75 chips). 6 FAN1 Read Only A one indicates the fan count limit has been exceeded. 7 FAN2 Read Only A one indicates the fan count limit has been exceeded. 13.5 Interrupt Status Register 2 — Address 42h Power on default <7:0> = 00h Bit Name Read/Write Description 0 IN4 Read Only A one indicates a High or Low limit has been exceeded. 1 -IN5 Read Only A one indicates a High or Low limit has been exceeded. 2 -IN6 Read Only A one indicates a High or Low limit has been exceeded. 3 FAN3 Read Only A one indicates the fan count limit has been exceeded. 4 Chassis Intrusion Read Only A one indicates Chassis Intrusion has gone high. 5 FIFO Overflow Read Only A one indicates an overflow in FIFO (POST RAM) i.e. 32nd location in FIFO has been written via Port x0h or x4h. 6 SMI__IN Read Only A one indicates SMI__IN has gone low. 7 Reserved Read Only 13.6 SMI Mask Register 1 — Address 43h Power on default <7:0> = 00h Bit Name Read/ Write Description 0 IN0 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 1 IN1 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 2 IN2 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 3 IN3 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 4 Temperature Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 5 BTI Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 6 FAN1 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. 7 FAN2 Read/Write A one disables the corresponding interrupt status bit for SMI interrupt. www.national.com 26 |
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