Datasheet

Description

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4.4 EVM Status LEDS

Table 5. EVM Status LEDS

LED Color Label Description

D5 RED 5V ON 5VBUS ON indicator

D4 RED V33D Sequencer power ON

D13 RED ALERT PMBus Alert

D16 GREEN CTRL PMBus Control

D28 GREEN USB ON USB attached

D6 AMBER GPI1 GPI1 input HIGH

D7 AMBER GPI2 GPI2 input HIGH

D8 AMBER GPI3 GPI3 input HIGH

D9 AMBER GPI4 GPI4 input HIGH

D10 GREEN GPIO1 GPIO1 HIGH

D11 GREEN GPIO2 GPIO2 HIGH

D12 GREEN GPIO3 GPIO3 HIGH

D14 GREEN GPIO4 GPIO4 HIGH

D15 GREEN GPIO13 GPIO13 HIGH

D17 GREEN GPIO14/TX GPIO14 HIGH

D18 GREEN GPIO15/RX GPIO15 HIGH

D19 GREEN GPIO16 GPIO16 HIGH

D20 GREEN GPIO17 GPIO17 HIGH

D21 GREEN GPIO18 GPIO18 HIGH

D22 GREEN GPIO19 GPIO19 HIGH

D23 GREEN GPIO20 GPIO20 HIGH

D24 GREEN GPIO21 GPIO21 HIGH

D25 GREEN GPIO22 GPIO22 HIGH

D26 AMBER GPIO5 GPIO5 HIGH

D27 AMBER GPIO6 GPIO6 HIGH

D29 AMBER GPIO7 GPIO7 HIGH

D30 AMBER GPIO8 GPIO8 HIGH

D31 AMBER GPIO9 GPIO9 HIGH

D32 AMBER GPIO10 GPIO10 HIGH

D34 AMBER GPIO11 GPIO11 HIGH

D36 AMBER GPIO12 GPIO12 HIGH

5 Description

The following paragraphs describe the UCD90SEQ64EVM-650 functionality and operation.

5.1 Communication Interface

Several communication interfaces to the sequencer are provided on the EVM.

5.1.1 USB Interface

An onboard USB-to-PMBus interface is provided through the USB Input (J29) connector. D28 provides

USB attach status. The EVM can be fully operated from USB input power only.

UCD90SEQ64EVM-650:— 64-Pin Sequencer Development Board SLVU423–December 2010

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