参数资料
型号: EMC2103-1-KP-TR
厂商: STANDARD MICROSYSTEMS CORP
元件分类: 模拟信号调理
中文描述: SPECIALTY ANALOG CIRCUIT, QCC12
封装: 4 X 4 MM, ROHS COMPLIANT, QFN-12
文件页数: 50/89页
文件大小: 1243K
代理商: EMC2103-1-KP-TR
RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Revision 0.90 (08-19-08)
54
SMSC EMC2103
DATASHEET
6.13
Error Status Registers
The Error Status Registers report the specific error condition for all measurement channels with limits.
If any bit is set in the High, Low, or Diode Fault Status register, the corresponding High, Low, or Fault
bit is set in the Interrupt Status Register.
Reading the Interrupt Status Register does not clear the Error Status bit. Reading from any Error Status
Register that has bits set will clear the register and the corresponding bit in the Interrupt Status
Register if the error condition has been removed. If the error condition is persistent, reading the Error
Status Registers will have no affect.
6.13.1
Tcrit Status Register
The Tcrit Status Register stores the event that caused the SYS_SHDN pin to be asserted. Each of the
temperature channels must be associated with the SYS_SHDN pin before they can be set (see
Section 6.9). Once the SYS_SHDN# pin is asserted, it will be released when the temperature drops
below the threshold level however the individual status bit will not be cleared until read.
6.14
Fan Status Register
The Fan Status Register contains the status bits associated with each fan driver.
Bit 7 - WATCH - This bit is asserted ‘1’ if the host has not programmed the fan driver within four (4)
seconds after power up (i.e. the Watchdog Timer has timed out. See Section 5.9.
Bit 5 - DRIVE_FAIL - Indicates that the RPM based Fan Speed Control Algorithm cannot drive the Fan
to the desired target setting at maximum drive. This bit can be masked from asserting the ALERT pin.
‘0’ - The RPM based Fan Speed Control Algorithm can drive Fan to the desired target setting.
‘1’ - The RPM based Fan Speed Control Algorithm cannot drive Fan to the desired target setting
at maximum drive.
Table 6.20 Error Status Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
1Fh
R-C
Tcrit Status
HWS
EXT3
_TCR
IT
EXT2
_TCR
IT
EXT1
_TCR
IT
INT_T
CRIT
00h
24h
R-C
High Status
-
EXT3
_HI
EXT2
_HI
EXT1
_HI
INT_
HI
00h
25h
R-C
Low Status
-
--
-
EXT3
_LO
EXT2
_LO
EXT1
_LO
INT_L
O
00h
26h
R-C
Diode Fault
-
EXT3
_FLT
EXT2
_FLT
EXT1
_FLT
-
00h
Table 6.21 Fan Status Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
27h
R-C
Fan Status
Register
WATCH
-
DRIVE
_FAIL
--
-
FAN_
SPIN
FAN_
STALL
00h
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