
SBOS559
– MAY 2011
REGISTER MAP
CONFIGURATION REGISTER
Table 3. Configuration Register (Address = 00h, Default = 08h)
BIT
NAME
TYPE
DESCRIPTION
0
Start
R/W
'1' enables startup of monitoring activity; '0' puts device in shutdown mode.
1
INT Enable
R/W
'1' enables the INT output.
2
INT Polarity Select
R/W
'1' selects active-high, open-source output; '0' selects active-low, open-drain output.
'1' disables the INT output without affecting the contents of the Interrupt Status Registers.
3
INT_Clear
R/W
The device stops monitoring and resumes on a '0'.
'1' outputs an active-low reset signal at RST_OUT, if bit 7 and bit 6 in the Fan Divisor/
4
RESET
R/W
Register (address 05h) are set to '1' and '0', respectively. This bit is cleared when the pulse
becomes inactive.
5
Chassis Clear
R/W
'1' clears the GPI/CI pin. This bit clears itself after 10ms.
6
GPO
R/W
'1' drives the GPO pin low.
7
INITIALIZATION
R/W
'1' restores power-on-default values to the registers. This bit is self-clearing
INTERRUPT STATUS REGISTERS
Table 4. Interrupt Status Register 1 (Address = 01h, Default = xxh; see Table 1) BIT
NAME
TYPE
DESCRIPTION
0
CH0
Read
'1' indicates a high or low limit has been exceeded.
1
CH1
Read
'1' indicates a high or low limit has been exceeded.
2
CH2
Read
'1' indicates a high or low limit has been exceeded.
3
CH3
Read
'1' indicates a high or low limit has been exceeded.
4
CH4
Read
'1' indicates a high or low limit has been exceeded.
5
CH5
Read
'1' indicates a high or low limit has been exceeded.
6
CH6
Read
'1' indicates a high or low limit has been exceeded.
7
INT_IN
Read
'1' indicates that a low signal has been detected on the INT_IN pin.
Table 5. Interrupt Status Register 2 (Address = 02h, Default = xxh; see Table 1) BIT
NAME
TYPE
DESCRIPTION
'1' indicates a high or low limit has been exceeded. One-Time Interrupt and Default Interrupt
0
Hot Temperature
Read
modes are supported and can be set by bit 6 of Interrupt Mask Register 2 (address 04h).
1
BTI
Read
'1' indicates that an interrupt has occurred from the BTI input pin.
2
FAN 1
Read
'1' indicates that a fan count limit has been exceeded.
3
FAN 2
Read
'1' indicates that a fan count limit has been exceeded.
4
GPI/CI
Read
'1' indidates that GPI/CI has gone high.
'1' indicates a high or low temperature limit has been exceeded. One-Time Interrupt and
5
OS
Read
Default Interrupt modes are supported and can be set by bit 7 of Interrupt Mask Register 2
(address 04h).
6
Reserved
Read
This bit is reserved.
7
Reserved
Read
This bit is reserved.
16
Copyright
2011, Texas Instruments Incorporated
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