mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 405

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Chapter 22
Queued Serial Peripheral Interface (QSPI)
22.1
This chapter describes the queued serial peripheral interface (QSPI) module.
22.1.1
Figure 22-1
Freescale Semiconductor
Internal Bus
Introduction
Block Diagram
illustrates the QSPI module.
Queue Control
Control Logic
Comparator
Internal Bus
Clock (f
End Queue
Counter
Control
Pointer
Pointer
Queue
Block
Status
Delay
Regs
Regs
sys
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
)
Divide by 2
Figure 22-1. QSPI Block Diagram
Address
Register
Done
4
QSPI
Logic
Array
4
Selects
Command
Chip
4
Baud Rate
Generator
80-byte
QSPI
RAM
msb
8/16 Bit Shift Reg.
Rx/Tx Data Reg.
lsb
Register
QSPI
Data
QSPI_DIN
QSPI_DOUT
QSPI_CS[3:0]
QSPI_CLK
22-1