LM95234_07 NSC [National Semiconductor], LM95234_07 Datasheet - Page 25

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

Register Name
Common Status Register
Register Name
Status 1 (Diode Fault)
2.4 STATUS REGISTERS
2.4.1 Common Status Register
2.4.2 Status 1 Register (Diode Fault)
Status fault bits for open or shorted diode (i.e. Short Fault: D+ shorted to Ground or D-; Open Fault: D+ shorted to V
During fault conditions the temperature reading is 0 °C if unsigned value registers are read or –128.000 °C if signed value registers
are read.
Bit(s) Bit Name
7–0
Bit(s)
7
6
5–4
3
2
1
0
Bit(s)
7
6
5
-
Bit Name
R4DO
R4DS
R3DO
Bit Name
BUSY
NR
–
SR4F
SR3F
SR2F
SR1F
Read/
Write
RO
RO
RO
Read/
Write
RO
RO
RO
RO
RO
RO
RO
Command
Command
Description
Remote 4 diode open fault status:
1 – indicates that remote 4 diode has an "open" fault
0 – indicates that remote 4 diode does not have an "open" fault
Remote 4 diode short fault status:
1 – indicates that remote 4 diode has a "short" fault
0 – indicates that remote 4 diode does not have a "short" fault
Remote 3 diode open fault status:
1 – indicates that remote 3 diode has an "open" fault
0 – indicates that remote 3 diode does not have an "open" fault
(Hex)
(Hex)
Byte
0x02
Byte
0x07
Description
Busy bit (device converting)
Not Ready bit (30 ms), indicates power up initialization sequence is in progress
Reserved – will report "0" when read.
Status Register 4 Flag:
1 – indicates that Status Register 4 has at least one bit set
0 – indicates that all of Status Register 4 bits are cleared
Status Register 3 Flag:
1 – indicates that Status Register 3 has at least one bit set
0 – indicates that all of Status Register 3 bits are cleared
Status Register 2 Flag:
1 – indicates that Status Register 2 has at least one bit set
0 – indicates that all of Status Register 2 bits are cleared
Status Register 1 Flag:
1 – indicates that Status Register 1 has at least one bit set
0 – indicates that all of Status Register 1 bits are cleared
Read/
Write
WO
Read/
Read/
Write
Write
RO
RO
Description
Writing to this register activates one conversion for all the enabled channels
if the chip is in standby mode (i.e. standby bit = 1). The actual data written
does not matter and is not stored.
R4DO R4DS R3DO R3DS R2DO R2DS R1DO R1DS
BUSY
D7
D7
25
NR
D6
D6
D5
D5
–
D4
D4
–
SR4F SR3F
D3
D3
D2
D2
SR2F SR1F
D1
D1
DD
D0
D0
, or floating).
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Default
Default
(Hex)
(Hex)
POR
0x00
POR
–