Terminating Unused Spi Signals; Soc Spi Internal Pull Up/ Pull Down - Intel Quark SoC X1000 Design Manual

General Purpose SPI Interface Design Guidelines—Intel
9.4

Terminating Unused SPI Signals

If the SPI functionality is not utilized, the signals should be terminated properly with
external pull-up or pull-down resistors.
Table 39.

SOC SPI Internal Pull Up/ Pull Down

SPI0_MISO
SPI1_MISO
SPI0_MOSI
SPI1_MOSI
SPI0_SCK
SPI1_SCK
June 2014
Order Number: 330258-002US
®
Quark™ SoC X1000
Pin
Input
Input
Output
Output
Output
Output
Direction
Internal 20K Pull up
Internal 20K Pull up
External Weak Pull Up or Pull Down
External Weak Pull Up or Pull Down
External Weak Pull Up or Pull Down
External Weak Pull Up or Pull Down
§ §
Status
®
Intel Quark™ SoC X1000
PDG
71