Kontron KT965 Series Bedienungsanleitung PDF herunterladen (Seite 29)

KT965 Family

KTD-00699-S Public User Manual Date: 2010-04-15 Page 29 of 90

4.2 Power Connector (ATXPWR)

The KT965 boards are designed to be supplied from a standard ATX or BTX power supply.

ATX/ BTX Power Connector:

Note

Pull

U/D

Ioh/Iol

Type

Signal

Type

Ioh/Iol

Pull

U/D

Note

- - PWR 3V3 12 24 GND PWR - -

PWR +12V 11 23 5V PWR

PWR +12V 10 22 5V PWR

- - PWR SB5V 9 21 5V PWR - -

- - I P_OK 8 20 -5V PWR - - 1

- - PWR GND 7 19 GND PWR - -

- - PWR 5V 6 18 GND PWR - -

- - PWR GND 5 17 GND PWR - -

- - PWR 5V 4 16 PSON# OC - -

- - PWR GND 3 15 GND PWR - -

- - PWR 3V3 2 14 -12V PWR - -

- - PWR 3V3 1 13 3V3 PWR - -

Note 1: -5V supply is not used onboard.

Note 2: Use of BTX supply not required for operation, but may be required to drive high-power PCI Express

x16 Add cards.

ATX+12V Power Connector:

Note

Pull

U/D

Ioh/Iol

Type

Signal

Type

Ioh/Iol

Pull

U/D

Note

1 - - PWR GND 1 3 +12V PWR - - 1

1 PWR GND 2 4 +12V PWR 1

Note 1: Use of the 4-pin ATX+12V Power Connector is required for operation of the KT965 boards.

See chapter “Power Consumption” regarding input tolerances on 3.3V, 5V, SB5V, +12 and -12V (also refer

to ATX specification).

Control signal description:

Signal Description

P_OK

P_OK is a power good signal and should be asserted high by the power supply to indicate

that the +5VDC and +3.3VDC outputs are above the undervoltage thresholds of the power

supply. When this signal is asserted high, there should be sufficient energy stored by the

converter to guarantee continuous power operation within specification. Conversely, when

the output voltages fall below the undervoltage threshold, or when mains power has been

removed for a time sufficiently long so that power supply operation is no longer guaranteed,

P_OK should be de-asserted to a low state. The recommended electrical and timing

characteristics of the P_OK (PWR_OK) signal are provided in the ATX12V Power

SupplyDesign Guide.

It is strongly recommended to use an ATX or BTX supply with the KT965 boards, in order to

implement the supervision of the 5V and 3V3 supplies. These supplies are not supervised

onboard the KT965 boards.

PS_ON# Active low open drain signal from the board to the power supply to turn on the power supply

outputs. Signal must be pulled high by the power supply.

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KT965 Family 1

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