Power Supply

Intel® Server Platform SR6850HW4 TPS

5.4.8.2I/O Port Expander

The power supply contains a serial I/O port expander, Philips* PCF8575 or approved equivalent. The address is either 0x4C or 0x4E, depending on address bit 0xA0.

Table 36. I/O Port Expander Signals

Signal Name

I/O Port

-OC +12V

P0

 

 

-Fan_Fault

P1

 

 

-UV

P2

 

 

-OV

P3

 

 

VIN_GOOD

P4

 

 

P_GOOD

P5

 

 

-PS_STATUS

P6

 

 

AC_PRFAIL

P7

 

 

-PFC_OTP

P10

 

 

POWER_LEVEL_1

P11

 

 

POWER_LEVEL_1

P12

 

 

POWER_LEVEL_1

P13

 

 

POWER_LEVEL_1

P14

 

 

High

P15,P16,P17

 

 

Table 37. I/O Port Expander Codes

Signal Name

Normal Off

Normal On

+12V OC

AC Dropout

Low AC

No AC

-OC +12V

1

1

0

1

1

1

 

 

 

 

 

 

 

Not Used

1

1

1

1

1

1

 

 

 

 

 

 

 

-UV

1

1

1 or 0

1

1

1

 

 

 

 

 

 

 

-OV

1

1

1

1

1

1

 

 

 

 

 

 

 

VIN_GOOD

1

1

1

1 or 0

0

0

 

 

 

 

 

 

 

P_GOOD

0

1

0

0

0

0

 

 

 

 

 

 

 

-PS_STATUS

1

0

1

1

1

1

 

 

 

 

 

 

 

-AC_PRFAIL

1

1

1

0

1

1

 

 

 

 

 

 

 

Note: The No AC column refers to the status of the I/O port when only the external +3.3stby bus voltage is available.

5.4.8.3Temperature Sensors

A Philips* NE1617A or equivalent temperature sensor is located near the air inlet of the supply. The address is either 0x34 or 0x9C depending on address bit 0xA0. A second sensor is near the exhaust outlet.

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Revision 1.0

 

Intel order number D23151-001