I347-AT4 Datasheet, PDF (69/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Device Functionality—I347-AT4
Table 36.
Register
26_6.12:8
26_6.7
26_6.6
26_6.4:0
3.24
Register 26_6.6 is set high each time the temperature is greater than or equal to the
value programmed in register 26_6.12:8. Register 26_6.6 remains high until read.
Register 26_6.7 controls whether the interrupt pin is asserted when register 26_6.6 is
high.
The interrupt should be enabled on only one port since there is only one temperature
sensor for the entire chip.
Temperature Sensor
Function
Setting
Mode
HW
Rst
SW
Rst
Temperature Threshold
Temperature Sensor
Interrupt Enable
Temperature Sensor
Interrupt
Temperature Sensor
Temperature in °C = 5 x 26_6.4:0 - 25.
For example, for 100 °C the value is 11001b.
1b = Interrupt Enable.
0b = Interrupt Enable.
1b = Temperature Reached Threshold.
0b = Temperature Below Threshold.
Temperature in °C = 5 x 26_6.4:0 - 25.
For example, for 100 °C the value is 11001b.
R/W
11001b Retain
R/W
0b
Retain
RO, LH
0b
0b
RO
xxxxx
xxxxx
Power Supplies
The I347-AT4 requires two power supplies: 1.9V and 1.0V. If a 3.3V I/O is required
(such as, for JTAG or MDC/MDIO pins), then a third supply of 3.3V is required.
For I/Os to be 3.3V tolerant, VDDO must be 3.3V.
3.24.1
AVDDH
AVDDH is used as the 1.9V analog supply.
3.24.2
VDDC
VDDC is used as the 1.9V XTAL_IN/OUT supply. These inputs are not 3.3V tolerant.
3.24.3
DVDD
DVDD is used for the digital logic. DVDD is the 1.0V digital supply.
3.24.4
VDDOL
VDDOL supplies the digital I/O pins for RESETn, LED, CONFIG, and INTn.
V18_L should be tied to VSS if the VDDOL voltage is set to 3.3V.
V18_L should be floating if the VDDOL voltage is set to 1.9V.
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