Introduction - Freescale Semiconductor MCF5329 Reference Manual

Chapter 30
Queued Serial Peripheral Interface (QSPI)
30.1

Introduction

This chapter describes the queued serial peripheral interface (QSPI) module.
30.1.1 Block Diagram
Figure 30-1 illustrates the QSPI module.
Queue Control
Block
Queue
Pointer
Comparator
End Queue
Pointer
Control Logic
Status
Regs
Control
Regs
Delay
Counter
Internal Bus
Internal Bus
Clock (f
sys/3
Freescale Semiconductor
4
Done
QSPI
Address
Register
4
Chip
Selects
Logic
4
Array
Command
Divide by 2
)
Figure 30-1. QSPI Block Diagram
MCF5329 Reference Manual, Rev 3
80-byte
QSPI
RAM
msb lsb
8/16 Bit Shift Reg.
Rx/Tx Data Reg.
Baud Rate
Generator
QSPI
Data
Register
QSPI_DIN
QSPI_DOUT
QSPI_CS[2:0]
QSPI_CLK
30-1