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EMC2101-R-ACZL-TR датащи(PDF) 30 Page - SMSC Corporation |
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EMC2101-R-ACZL-TR датащи(HTML) 30 Page - SMSC Corporation |
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30 / 57 page ![]() SMBus Fan Control with 1°C Accurate Temperature Monitoring Datasheet Revision 2.54 (06-16-09) 30 SMSC EMC2101 DATASHEET Chapter 6 Register Set The following registers are accessible through the SMBus Interface. The registers are described in functional order. Registers with multiple addresses are included for software compatibility. Writing or reading from either address will point to the same internal register. Table 6.1 Register Set in Hexadecimal Order REGISTER ADDRESS R/W REGISTER NAME FUNCTION DEFAULT VALUE PAGE 00h R Internal Temperature Stores the Internal Temperature 00h Page 33 01h R External Diode Temperature High Byte Stores the External Temperature High Byte 00h Page 33 02h R Status Reports internal, external, and TCRIT alarms 00h Page 33 03h and 09h R/W Configuration Alert Mask, STANDBY, TCRIT override, Alert Fault Queue 00h Page 34 04h and 0Ah R/W Conversion Rate Sets conversion rate 08h (16 / sec) Page 35 05h and 0Bh R/W Internal Temp Limit ALERT / TACH asserted if measured temp above this value 46h (70°C) Page 36 07h and 0Dh R/W External Temp High Limit High Byte ALERT / TACH asserted if measured temp above this value 46h (70°C) Page 36 08h and 0Eh R/W External Temp Low Limit High Byte ALERT / TACH asserted if measured temp below this value 00h (0°C) Page 36 0Ch R/W External Temperature Force Force the temperature for determining the next fan speed used in the Fan Control Look-Up Table 00h Page 36 0Fh R/W One Shot When written, performs a one-shot conversion. 00h Page 37 10h R External Diode Temperature Low Byte Stores the External Temperature Low Byte 00h Page 33 11h R/W Scratchpad Scratchpad - This register is read/write but does nothing 00h Page 37 12h R/W Scratchpad Scratchpad - This register is read/write but does nothing 00h Page 37 13h R/W External Diode High Limit Low Byte Fractional data of High Limit 00h Page 36 14h R/W External Diode Low Limit Low Byte Fractional data of Low Limit 00h Page 36 16h R/W Alert Mask Disables alarms A4h Page 37 |
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