M68HC16 Z SERIES
QUEUED SERIAL MODULE
USER’S MANUAL
9-11
Figure 9-5 Flowchart of QSPI Master Operation (Part 1)
READ COMMAND CONTROL
AND TRANSMIT DATA
FROM RAM USING QUEUE
POINTER ADDRESS
A1
WORKING QUEUE POINTER
CHANGED TO NEWQP
IS QSPI
DISABLED
N
Y
N
EXECUTE SERIAL TRANSFER
STORE RECEIVED DATA
IN RAM USING QUEUE
POINTER ADDRESS
B1
QSPI CYCLE BEGINS
(MASTER MODE)
Y
ASSERT PERIPHERAL
CHIP-SELECT(S)
IS PCS TO
SCK DELAY
PROGRAMMED
N
EXECUTE STANDARD DELAY
Y
EXECUTE PROGRAMMED DELAY
HAS NEWQP
BEEN WRITTEN
QSPI FLOW 2
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..