41.4 Signal Description

Table 41-1. Signal Description
Pin Name	Pin Description	Type
QSCK	Serial Clock	Output
MOSI (QIO0) ⁽¹⁾⁽²⁾	Data Output (Data Input Output 0)	Output (Input/Output)
MISO (QIO1) ⁽¹⁾⁽²⁾	Data Input (Data Input Output 1)	Input (Input/Output)
QIO2 ⁽³⁾	Data Input Output 2	Input/Output
QIO3 ⁽³⁾	Data Input Output 3	Input/Output
QCS	Peripheral Chip Select	Output

Note:

MOSI and MISO are used for single-bit SPI operation.
QIO0–QIO1 are used for Dual SPI operation.
QIO0–QIO3 are used for Quad SPI operation.

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