NXP Semiconductors MPC5606S - Detailed Signal Description

Quad Serial Peripheral Interface (QuadSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
1000 Freescale Semiconductor
NOTE
When using single/dual SPI commands, the HOLD(IO3) and WP(IO2) pins
are driven with high impedance. Some external memories, depending on
their input characteristics, require their HOLD and WP pins to be driven
high. The use of pullup resistors on these pins will ensure the correct value
during single/dual instructions.
30.3.2 Detailed Signal Description
The following paragraphs describe the function of the signals given in Table 30-4 in more detail. Only the
modes relevant to the specific signal are mentioned according to Table 30-4.
30.3.2.1 PCS_C0 — Peripheral Chip Select/Slave Select
In SPI Master mode, the PCS0 signal is a Peripheral Chip Select output that selects which slave device the
current transmission is intended for.
In SPI Slave mode, the SS signal is a Slave Select input signal that allows a SPI master to select the
QuadSPI as the target for transmission.
In Serial Flash mode this signal is the chip select for the serial flash device.
30.3.2.2 PCS[3:1] — Peripheral Chip Selects 1–3
PCS[3:1] are Peripheral Chip Select output signals in SPI Master mode.
30.3.2.3 PCS4 — Peripheral Chip Select 4
In SPI Master mode, PCS4 is a Peripheral Chip Select output signal.
30.3.2.4 PCS[7:5] — Peripheral Chip Selects 5–7
PCS[7:5] are Peripheral Chip Select output signals in SPI Master mode.
30.3.2.5 SI_IO0 — Serial Input, QuadSPI Data IO_0
SI is a serial data input signal in the SPI Master and SPI Slave mode.
In the Serial Flash mode it is used as I/O bit 0.
30.3.2.6 SO_IO1 — Serial Output, QuadSPI Data IO_1
SO is a serial data output signal in the SPI Master and SPI Slave mode. Note that the output buffer enable
signal belonging to the SO output is driven by the Slave Select input signal SS to allow for several slaves
1
When connecting to an external SPI device, these definitions should be used as reference.
2
When connection to a Quad Serial Flash, these definitions should be used as reference.