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請問 MSP430F2274 當MAST -SPI 是否要加上PULL-HI 4.7K電阻呢?

Other Parts Discussed in Thread: MSP430F2274

HELLO:

目前用 MSP430F2274 設計電路

MCU的SPI 設計為MAST  SPI 與 另一顆ic 溝通,SPI線路距離約1CM

 如下圖~

 MCU-

          PIN11=/CS

          PIN12=SIMO

          PIN13=SOMI

         PIM14=CLK  (Lo  side active)

請問 PIN11~PIN14 有需要PULL-HI    4.7K電阻嗎?       THX!!