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The XEM7360 supports the FrontPanel Device Settings in the table below, accessible from the FrontPanel Application as well as the Device Settings API.

Fan Control Device Settings

You may optionally connect a fan to JP1 (Molex 53398-0271). This connector drives a 3.3v PWM signal to the fan according to the Device Settings. For most applications, we recommend binary operating mode and enabling the fan at all times. You may optionally configure a proportional control whereby the PWM output is proportional to the measured temperature of the FPGA die.

 

Name

Type

Description

XEM7360_VADJ1_VOLTAGE

INT32

Vadj1 output voltage specified in 10’s of mV. For example, “330” would set Vadj1 = 3.3v.

DEFAULT: 0

XEM7360_VADJ2_VOLTAGEINT32

Vadj2 output voltage specified in 10’s of mV. For example, “330” would set Vadj2 = 3.3v.

DEFAULT: 0

XEM7360_VADJ3_VOLTAGEINT32

Vadj3 output voltage specified in 10’s of mV. For example, “180” would set Vadj3 = 1.8v. Vadj3 connects to a High Performance bank and supports a maximum of 1.8v.

DEFAULT: 0

XEM7360_VADJ_MODE

INT32

(1:0) : Vadj1 mode
(3:2) : Vadj2 mode
(5:4) : Vadj3 mode
(6) : Reserved
(7) : Vadj output enable: 0=disable, 1=enable, Applies to ALL Vadj. 

Vadj Modes:

0=Minimum setting (0.8V)
1=IPMI setting only.  If a valid IPMI EEPROM is not found, Vadj is set to its minimum setting (0.8V).
2=IPMI with fallback.  If a valid IPMI EEPROM is not found, Vadj is set according to XEM7360_VADJx_VOLTAGE.
3=IPMI ignore. IPMI settings are ignored and Vadj is set according to XEM7360_VADJx_VOLTAGE.

DEFAULT: 170 (0xAA) - Each Vadj at mode 2 with output enabled.

XEM7360_STATUS

INT32

Read-only register that contains the FMC1 signal status during runtime.

[0] - PRSNT_M2C_L

[1] - CLKDIR

[2] - PG_M2C

[3] - POK_3P3

[4] - POK_VADJ

[6:5] - GA[0:1]

XEM7360_FAN_MODE

INT32

0=Binary mode
1=Temperature slope mode
DEFAULT: 0

XEM7360_FAN_ENABLE

INT32

In binary mode, 0=disable, 1=enable

DEFAULT: 1

XEM7360_FAN_TEMP_THRESHOLD

INT32

In temperature slope mode, the number here represents the lower threshold (in degrees Celsius) for temperature-dependent operation.
At THRESH, fan control PWM=0%.

At THRESH+16C, fan control PWM=50%.

At THRESH+32C, fan control PWM=100%.

 

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