Hardware Description

Figure 3-35 SCI block diagram

You can set the Smart Card interface voltage to operate at 5V, 3.3V or 1.8V by setting jumpers on J27 (for SCI0) and J50 (for SCI1).

Connect pins AB for 3.3V operation

Connect pins CB for 5V operation

omit the link for 1.8V operation.

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ARM DUI 0224I

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Image 144
ARM ARM DUI 0224I manual SCI block diagram