QUEUED SERIAL MODULE
MC68332
6-6
USER’S MANUAL
Figure 6-2 QSPI Block Diagram
6.3.1
QSPI Registers
The programmer's model for the QSPI consists of the QSM global and pin control reg-
isters, four QSPI control registers (SPCR[0:3]), a status register (SPCR), and the 80-
byte QSPI RAM.
Registers and RAM can be read and written by the CPU. Refer to
for register bit and field definitions.
QSPI BLOCK
CONTROL
REGISTERS
END QUEUE
POINTER
QUEUE
POINTER
STATUS
REGISTER
DELAY
COUNTER
COMPARATOR
PROGRAMMABLE
LOGIC ARRAY
80-BYTE
QSPI RAM
CHIP SELECT
COMMAND
DONE
4
4
3
BAUD RATE
GENERATOR
PCS [3:1]
PCS0/SS
MISO
MOSI
SCK
M
S
M
S
8/16-BIT SHIFT REGISTER
Rx/Tx DATA REGISTER
MSB
LSB
4
QUEUE CONTROL
BLOCK
CONTROL
LOGIC
ADDRESS
REGISTER
4
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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