NXP Semiconductors MWCT101 S Series, Reference Manual

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Table 33-5. Glossary (continued)
Term Definition
• Quad pad: Quad line I/O with 4 bidirectional I/O lines, driven alternatively by the serial flash
device or the QuadSPI
• Octal pad: Octal line I/O with 8 bidirectional I/O lines, driven alternatively by the serial flash
device or the QuadSPI
Transaction A transaction consists of all flags, data and signals in either direction to execute a command for an
attached serial flash device. It is a combination of chip select, sclk, instruction code, address, mode-
and/or dummy bytes, transmit and/or receive data.
LUT Look-up table.
33.3 External Signal Description
This section provides the external signal information of the QuadSPI module.
The following table lists the external signals belonging to the module in conjunction with
the different modes of operation.
Table 33-6. Signal Properties
Signal
Name
Function Direction Description
PCSFA1 Peripheral Chip Select
Flash A1
O This signal is the chip select for the serial flash device A1. A1 represents
the first of the two flash devices that share IOFA.
PCSFA2 Peripheral Chip Select
Flash A2
O This signal is the chip select for the serial flash device A2. A2 represents
the the second of the two flash devices that share IOFA.
PCSFB1 Peripheral Chip Select
Flash B1
O This signal is the chip select for the serial flash device B1. B1 represents
the first of the two flash devices that share IOFB.
PCSFB2 Peripheral Chip Select
Flash B2
O This signal is the chip select for the serial flash device B2. B2 represents
the second of the two flash devices that share IOFB.
SCKFA Serial Clock Flash A O This signal is the serial clock output to the serial flash device A.
SCKFB Serial Clock Flash B O This signal is the serial clock output to the serial flash device B.
IOFA[7:0] Serial I/O Flash A I/O These signals are the data I/O lines to/from the serial flash device A. Refer
to
Driving External Signals for details about the signal drive and timing
behavior. Note that the signal pins of the serial flash device may change
their function according to the SFM Command executed, leaving them as
control inputs when Single and Dual Instructions are executed. The
module supports driving these inputs to dedicated values. In single I/O
mode, QuadSPI drives data on IOFA[0] and expects data on IOFA[1].
IOFB[7:0] Serial I/O Flash B I/O These signals are the data I/O lines to/from the serial flash device B. Refer
to
Driving External Signals for details about the signal drive and timing
behavior. Note that the signal pins of the serial flash device may change
their function according to the SFM Command executed, leaving them as
control inputs when Single and Dual Instructions are executed. The
module supports driving these inputs to dedicated values. In single I/O
mode, QuadSPI drives data on IOFB[0] and expects data on IOFB[1].
Table continues on the next page...
External Signal Description
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
830 NXP Semiconductors