LM96163CISDX/NOPB National Semiconductor, LM96163CISDX/NOPB Datasheet - Page 29

• Manufacturer Part Number: LM96163CISDX/NOPB
• Description: IC TEMP SENSOR DGTL REMOTE 10LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®, TruTherm®r

Specifications of LM96163CISDX/NOPB

• Function: Fan Control, Temp Monitor
• Topology: ADC (Sigma Delta), Comparator, Register Bank, Tach
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM96163CISDX

49
00
05 (0B)
01
Address
Address
Address
Local Temperature and Local High Setpoint Registers
Remote Diode Temperature, Offset and Setpoint Registers
HEX
HEX
HEX
Hex
Hex
Hex
00
05
49
48
01
TACHOMETER LIMIT (MSB) and 48
LOCAL TEMPERATURE REGISTER (8-bits)
AND 10
HEX
Read/
LOCAL HIGH SETPOINT REGISTER (8-bits)
Write
R/W
Read/
Read/
Write
Write
R/W
R/W
R/W
R
HEX
R
SIGNED REMOTE DIODE TEMPERATURE REGISTERS
Bits
7:0
7:0
Bits
Bits
7:0
7:2
1:0
7:0
Value
Value
Value
POR
0x46
(70°)
0xFF
0xFF
POR
N/A
POR
N/A
TACHL5:TACL0
TACL13:TACL6
LHS7:LHS0
LT7:LT0
[Reserved]
RT12:RT5
Name
Name
Name
HEX
TACHOMETER LIMIT (LSB) REGISTERS
Local Temperature Reading (8-bit)
8-bit integer representing the temperature of the LM96163 die.
LT7 is the SIGN bit
LT6 has a bit weight of 64°C
LT5 has a bit weight of 32°C
LT4 has a bit weight of 16°C
LT3 has a bit weight of 8°C
LT2 has a bit weight of 4°C
LT1 has a bit weight of 2°C
LT0 has a bit weight of 1°C
Local HIGH Setpoint
High Setpoint for the internal diode.
LHS7 is the SIGN bit
LHS6 has a bit weight of 64°C
LHS5 has a bit weight of 32°C
LHS4 has a bit weight of 16°C
LHS3 has a bit weight of 8°C
LHS2 has a bit weight of 4°C
LHS1 has a bit weight of 2°C
LHS0 has a bit weight of 1°C
Tachometer Limit (MSB and LSB)
These registers contain the current 14-bit Tachometer Count, representing the
period of time between tach pulses. Fan RPM = (f * 5,400,000) / (Tachometer
Count), where f = 1 for 2 pulses/rev fan; f = 2 for 1 pulse/rev fan; and f = 2/3 for
3 pulses/rev fan. See the Applications Notes section for more tachometer
information. Note that the 16-bit tachometer MSB and LSB register addresses
are in reverse order from the 16 bit temperature readings.
These bits are not used and write 0 or 1.
Most Significant Byte of the Signed Remote Diode Temperature Reading
The most significant 8-bits of the 2’s complement value, representing the
temperature of the remote diode connected to the LM96163. Bit 7 is the sign
bit, bit 6 has a weight of 64°C, and bit 0 has a weight of 1°C. This byte to be
read before the LSB.
29
Description
Description
Description
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