Motorola MPC533 Reference Manual page 640

Queued Serial Peripheral Interface
Figure 15-22. Flowchart of QSPI Slave Operation (Part 1)
15-34
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
QSPI Cycle Bgins
(Slave Mode
A2
Is QSPI Y
Disabled?
N
Y
Has NEWQP
Been Written?
N
Read Transmit Data
From RAM Using Queue
Pointer Address
Is Slave
Y
Select Pin
Asserted?
N
Execute Serial Transfer
When SCK Received
Store Received Data
In RAM Using Queue
Pointer Address
Write Queue Pointer to
CPTQP Status Bits
B2
MPC533 Reference Manual
Queue Pointer
Changed to NEWQP
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