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LM93 Datasheet(PDF) 52 Page - National Semiconductor (TI) |
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LM93 Datasheet(HTML) 52 Page - National Semiconductor (TI) |
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52 / 92 page  16.0 Registers (Continued) 16.5.8 Register 4Fh H_Fan Error Status Register Address Read/ Write Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default Value 4Fh RWC H_Fan Error Status RES FAN4 _ERR FAN3 _ERR FAN2 _ERR FAN1 _ERR 00h Bit Name R/W Description Sleep Masking 0 FAN1_ERR RWC This bit is set when the Fan Tach 1 value register is above the value set in the Fan Tach 1 Limit register. S1*, S3*, S4/5 1 FAN2_ERR RWC This bit is set when the Fan Tach 2 value register is above the value set in the Fan Tach 2 Limit register. S1*, S3*, S4/5 2 FAN3_ERR RWC This bit is set when the Fan Tach 3 value register is above the value set in the Fan Tach 3 Limit register. S1*, S3*, S4/5 3 FAN4_ERR R This bit is set when the Fan Tach 4 value register is above the value set in the Fan Tach 4 Limit register. S1*, S3*, S4/5 7:4 RES R Reserved N/A 16.6 VALUE REGISTERS 16.6.1 Registers 50–53h Unfiltered Temperature Value Registers Register Address Read/ Write Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default Value 50h R Zone 1 (CPU1) Temp 76543210N/D 51h R Zone 2 (CPU1) Temp 76543210N/D 52h R Zone 3 (Internal) Temp 76543210N/D 53h R/W Zone 4 (External Digital) Temp 76543210N/D Zones 1, 2 and 3 are all automatically updated by the LM93. The Zone 4 (External Digital) Temp register must be written by an external SMBus device. The temperature registers for zones 1 and 2 must return a value of 80h if the remote diode pins are not implemented by the board designer or are not functioning properly. 16.6.2 Registers 54–55h Filtered Temperature Value Registers Register Address Read/ Write Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default Value 54h R Zone 1 (CPU1) Filtered Temp 76543210 00h 55h R Zone 2 (CPU1) Filtered Temp 76543210 00h These registers reflect the temperature of zones 1 and 2 after the spike smoothing filter has been applied. The characteristics of the filtering can be adjusted by using the Zones 1/2 Spike Smoothing Control register. www.national.com 52 |
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