LM95234_07 NSC [National Semiconductor], LM95234_07 Datasheet - Page 18

• Manufacturer Part Number: LM95234_07
• Description: Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm Technology
• Manufacturer: NSC [National Semiconductor]

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Register Name
Local Temp MSB
Local Temp LSB
Remote Temp 1 MSB – Signed
Remote Temp 1 LSB – Signed,
Digital Filter Off
Remote Temp 1 LSB – Signed,
Digital Filter On
Remote Temp 2 MSB – Signed
Remote Temp 2 LSB – Signed,
Digital Filter Off
Remote Temp 2 LSB – Signed,
Digital Filter On
Remote Temp 3 MSB – Signed
Remote Temp 3 LSB – Signed
Remote Temp 4 MSB – Signed
Remote Temp 4 LSB – Signed
Remote Temp 1 MSB – Unsigned
Remote Temp 1 LSB – Unsigned,
Digital Filter Off
Remote Temp 1 LSB – Unsigned,
Digital Filter On
Remote Temp 2 MSB – Unsigned
Remote Temp 2 LSB – Unsigned,
Digital Filter Off
Remote Temp 2 LSB – Unsigned,
Digital Filter On
Remote Temp 3 MSB – Unsigned
Remote Temp 3 LSB – Unsigned
Remote Temp 4 MSB – Unsigned
2.
1.13 ONE-SHOT CONVERSION
The One-Shot register is used to initiate a round of conver-
sions and comparisons when the device is in standby mode,
2.0 LM95234 Registers
Command register selects which registers will be read from or written to. Data for this register should be transmitted during the
Command Byte of the SMBus write communication.
P0-P7: Command
insure a timeout of all devices on the bus the SMBCLK
or SMBDAT lines must be held low for at least 35ms.
When SMBDAT is HIGH, have the master initiate an
SMBus start. The LM95234 will respond properly to an
SMBus start condition at any point during the
communication. After the start the LM95234 will expect
an SMBus Address address byte.
Command
P7
(Hex)
0x1C
Byte
0x10
0x20
0x11
0x21
0x12
0x22
0x13
0x23
0x14
0x24
0x19
0x29
0x1A
0x2A
0x1B
0x2B
P6
Read/
Write
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
P5
Register Summary
Command Byte
SIGN
SIGN
SIGN
SIGN
SIGN
128
128
128
128
D7
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
P4
18
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
D6
64
64
64
64
64
64
64
64
64
P3
after which the device returns to standby. This is not a data
register and it is the write operation that causes the one-shot
conversion. The data written to this address is irrelevant and
is not stored. A zero will always be read from this register. All
the channels that are enabled in the Channel Enable Register
will be converted once and the TCRIT1, TCRIT2 and
TCRIT3 pins will reflect the comparison results based on this
round of conversion results of the channels that are not
masked.
D5
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
32
32
32
32
32
32
32
32
32
P2
1/16
1/16
1/16
1/16
D4
16
16
16
16
16
16
16
16
16
P1
0
0
0
0
0
0
0
0
1/32
1/32
1/32
1/32
D3
P0
8
0
8
0
8
0
8
0
8
0
8
0
8
0
8
0
8
D2
4
0
4
0
4
0
4
0
4
0
4
0
4
0
4
0
4
D1
2
0
2
0
2
0
2
0
2
0
2
0
2
0
2
0
2
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Default
(Hex)
POR
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–