MC68331CEH16 Datasheet, PDF (57/84 Pages) Freescale Semiconductor, Inc – 32-Bit Modular Microcontroller

Freescale Semiconductor, Inc.
QUEUE CONTROL
BLOCK
QUEUE
POINTER
COMPARATOR
END QUEUE
POINTER
CONTROL
LOGIC
STATUS
REGISTER
CONTROL
REGISTERS
DELAY
COUNTER
4
A
D
DONE
D
R
E
S
4
S
R
E
G
I
S
T
E
R
80-BYTE
QSPI RAM
4 _{CHIP SELECT}
4
COMMAND
PROGRAMMABLE
LOGIC ARRAY
M
MSB
LSB
S
8/16-BIT SHIFT REGISTER
Rx/Tx DATA REGISTER
M
S
2
BAUD RATE
GENERATOR
Figure 13 QSPI Block Diagram
MOSI
MISO
PCS0/SS
PCS[2:1]
SCK
QSPI BLOCK
5.4.1 QSPI Pins
Seven pins are associated with the QSPI. When not needed for a QSPI application, they can be con-
figured as general-purpose I/O pins. The PCS0/SS pin can function as a peripheral chip select output,
slave select input, or general-purpose I/O. Refer to the following table for QSPI input and output pins
and their functions.
MC68331TS/D
For More Information On This Product,
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