AMC80 Datasheet, PDF (16/23 Pages) Texas Instruments – System Hardware Monitor with Two-Wire/SMBus Serial Interface

AMC80
SBOS559 – MAY 2011
REGISTER MAP
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CONFIGURATION REGISTER
Table 3. Configuration Register (Address = 00h, Default = 08h)
BIT
NAME
0
Start
1
INT Enable
2
INT Polarity Select
3
INT_Clear
4
RESET
5
Chassis Clear
6
GPO
7
INITIALIZATION
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DESCRIPTION
'1' enables startup of monitoring activity; '0' puts device in shutdown mode.
'1' enables the INT output.
'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.
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/
Register (address 05h) are set to '1' and '0', respectively. This bit is cleared when the pulse
becomes inactive.
'1' clears the GPI/CI pin. This bit clears itself after 10ms.
'1' drives the GPO pin low.
'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
0
CH0
1
CH1
2
CH2
3
CH3
4
CH4
5
CH5
6
CH6
7
INT_IN
TYPE
Read
Read
Read
Read
Read
Read
Read
Read
DESCRIPTION
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'1' indicates a high or low limit has been exceeded.
'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
0
Hot Temperature
1
BTI
2
FAN 1
3
FAN 2
4
GPI/CI
5
OS
6
Reserved
7
Reserved
TYPE
Read
Read
Read
Read
Read
Read
Read
Read
DESCRIPTION
'1' indicates a high or low limit has been exceeded. One-Time Interrupt and Default Interrupt
modes are supported and can be set by bit 6 of Interrupt Mask Register 2 (address 04h).
'1' indicates that an interrupt has occurred from the BTI input pin.
'1' indicates that a fan count limit has been exceeded.
'1' indicates that a fan count limit has been exceeded.
'1' indidates that GPI/CI has gone high.
'1' indicates a high or low temperature limit has been exceeded. One-Time Interrupt and
Default Interrupt modes are supported and can be set by bit 7 of Interrupt Mask Register 2
(address 04h).
This bit is reserved.
This bit is reserved.
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