Programming SPI Modes

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

Table: SPI Modes in Generic Quad-SPI Controller (Lower Data Bus is Active) lists the lower data bus pins driven by the generic Quad-SPI controller as per the SPI mode, receive, and transmit of the lower data bus.

Table 24-15:      SPI Modes in Generic Quad-SPI Controller (Lower Data Bus is Active)

SPI Mode

Mode Description

Data Bus
Select

Receive

Transmit

Lower Data Bus [3:0] I/O

2'b01

SPI transmit.

2'b01

1'b0

1'b1

Not used

Not used

Not used

O

2'b01

SPI receive.

2'b01

1'b1

1'b0

Not used

Not used

I

Not used

2'b01

SPI transmit and receive.

2'b01

1'b1

1'b1

Not used

Not used

I

O

2'b10

Dual-SPI transmit.

2'b01

1'b0

1'b1

Not used

Not used

O

O

2'b10

Dual-SPI receive.

2'b01

1'b1

1'b0

Not used

Not used

I

I

2'b11

Quad-SPI transmit.

2'b01

1'b0

1'b1

O

O

O

O

2'b11

Quad-SPI receive.

2'b01

1'b1

1'b0

I

I

I

I