Input Ports

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Port Name

Required

Description

Comments

ncs

Yes

Device select input.

The ncs port is used with the SPI protocol only.

sck

Yes

Serial data clock.

The sck port is used with the SPI protocol only.

si

Yes

Serial data input.

The si port is used with the SPI protocol only.

oscena

No

Signal that enables the internal oscillator.

De-assert the oscena port to disable the oscillator (osc) port when not using the SPI interface protocol.