Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features
Datasheet
are read the 4 LSb’s are latched into their respective bits in the A/D Converter LSbs Register. This
give 12-bits of resolution with a minimum value of 1/16th per unit measured. (i.e., Temperature Range:
-127.9375 ºC < Temp < 127.9375 ºC and Voltage Range: 0 < Voltage < 256.9375) . See the DC
Characteristics for the accuracy of the reading values.
The eight most significant bits of the 12-bit averaged readings are stored in Reading registers and
compared with Limit registers. The Interrupt Status Register bits are asserted if the corresponding
measured value(s) on the inputs violate their programmed limits.
8.2.32
Register 89h: SMSC Test Register
Table 8.51 Register 89h: SMSC Test Register
Register
Address
Read/
Write
Bit 7
Bit 0
Default
Value
Register Name
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
(MSb)
(LSb)
89h
R
SMSC Test Register
TST7
TST6
TST5
TST4
TST3
TST2
TST1
TST0
N/A
8.2.33
Registers 8Ah: SMSC Test Register
Table 8.52 Registers 8Ah: SMSC Test Register
Register
Address
Read/
Write
Bit 7
Bit 0
Default
Value
Register Name
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
(MSb)
(LSb)
8Ah
R
SMSC Test Register
RES
TST6
TST5
TST4
TST3
TST2
TST1
TST0
4Dh
8.2.34
Registers 8Bh: SMSC Test Register
Table 8.53 Registers 8Bh: SMSC Test Register
Register
Address
Read/
Write
Bit 7
Bit 0
Default
Value
Register Name
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
(MSb)
(LSb)
8Bh
R/W
SMSC Test Register
RES
TST6
TST5
TST4
TST3
TST2
TST1
TST0
4Dh
This register becomes read only when the Lock bit is set. Any further attempts to write to this register
shall have no effect.
This register must not be written. Writing this register may produce unexpected results.
8.2.35
Registers 8Ch: SMSC Test Register
Table 8.54 Registers 8Ch: SMSC Test Register
Register
Address
Read/
Write
Bit 7
Bit 0
Default
Value
Register Name
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
(MSb)
(LSb)
8Ch
R
SMSC Test Register
RES
RES
RES
TST4
TST3
TST2
TST1
TST0
0Eh
SMSC EMC6D103
Revision 0.4 (04-04-05)
DATA7S9HEET
SMSC [ SMSC CORPORATION ]
