SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 273

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
SMSC SCH311X
24.2.34
24.2.35
24.2.36
24.2.37
24.2.38
Register
Address
Register
Address
Register
Address
Register
Address
Register
Address
89h
8Ch
8Dh
8Ah
8Bh
/Write
Read
Read/
Read/
Write
Write
R/W
R
Read/
Read/
Write
Write
R/W
R
There is a 10-bit Analog to Digital Converter (ADC) located in the hardware monitoring block that
converts the measured voltages into 10-bit reading values. Depending on the averaging scheme
enabled (i.e., 16x averaging, 32x averaging, etc.), the hardware monitor may take multiple readings
and average them to create 12-bit reading values. The 8 MSb’s of the reading values are placed in
the Reading Registers. When the upper 8-bits located in the reading registers 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 1/16
< 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.
Registers Registers 89h: SMSC Test Register
This is a read-only SMSC test register. Writing to this register has no effect on the hardware.
Registers 8Ah: SMSC Test Register
Registers 8Bh: SMSC Test Register
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.
Registers 8Ch: SMSC Test Register
Registers 8Dh: SMSC Test Register
This register becomes read only when the Lock bit is set. Any further attempts to write to this register
shall have no effect.
R
SMSC Test Register
SMSC Test Register
SMSC Test Register
SMSC Test Register
SMSC Test Register
Register
Register Name
Register Name
Register Name
Register Name
Name
th
(MSb)
Bit 7
per unit measured. (i.e., Temperature Range: -127.9375 ºC < Temp
7
(MSb)
(MSb)
Bit 7
DATASHEET
RES
Bit 7
RES
(MSb)
(MSb)
Bit 7
Bit 7
RES
RES
Bit 6
6
257
TST6
Bit 6
TST6
Bit 6
Bit 6
Bit 6
RES
RES
Bit 5
5
TST5
TST5
Bit 5
Bit 5
Bit 5
Bit 5
RES
RES
Bit 4
4
TST4
TST4
TST4
TST4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 3
3
TST3
TST3
TST3
TST3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 2
TST2
TST2
TST2
Bit 2
TST2
Bit 2
Bit 2
Bit 2
2
Bit 1
TST1
TST1
TST1
TST1
Bit 1
Bit 1
Bit 1
Bit 1
1
Rev 0.2 (09-28-04)
(LSb)
(LSb)
TST0
(LSb)
(LSb)
(LSb)
Bit 0
TST0
TST0
TST0
Bit 0
Bit 0
Bit 0
Bit 0
0
Default
Default
Default
Default
Default
Value
Value
Value
Value
Value
4Dh
0Eh
0Eh
4Dh
N/A