MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 348
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MCF5272VF66
Manufacturer Part Number
MCF5272VF66
Description
Manufacturer
Freescale
Datasheet
1.MCF5272VF66.pdf
(544 pages)
Specifications of MCF5272VF66
Family Name
MCF5xxx
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
66MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
3.3V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
196
Package Type
MA-BGA
Lead Free Status / RoHS Status
Not Compliant
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Queued Serial Peripheral Interface (QSPI) Module
Figure 14-4
14-10
13–10
Bits
7–0
9
8
QSPI_Dout
QSPI_CLK
QSPI_Din
QSPI_CS
CPHA
Name
CPOL
BAUD
BITS
shows an example of a QSPI clocking and data transfer.
QMR[CPOL] = 0
QMR[CPHA] = 1
QCR[CONT] = 0
Transfer size. Determines the number of bits to be transferred for each entry in the queue.
Value Bits per transfer
0000 16
0001– 0111 Reserved
1000 8
1001 9
1010 10
1011 11
1100 12
1101 13
1110 14
1111 15
Clock polarity. Defines the clock polarity of SCK.
0 The inactive state value of QSPI_CLK is logic level 0.
1 The inactive state value of QSPI_CLK is logic level 1.
Clock phase. Defines the QSPI_CLK clock-phase.
0 Data captured on the leading edge of QSPI_CLK and changed on the following edge of QSPI_CLK.
1 Data changed on the leading edge of QSPI_CLK and captured on the following edge of QSPI_CLK.
Baud rate divider. The baud rate is selected by writing 0, or a value in the range 2–255. 1 is not a valid
value. A value of zero disables the QSPI. The desired QSPI_CLK baud rate is related to CLKIN and
QMR[BAUD] by the following expression:
msb
15
15
QMR[BAUD] = SystemClock / [2 × (desired QSPI_CLK baud rate)]
MCF5272 ColdFire
A
14
14
Figure 14-4. QSPI Clocking and Data Transfer Example
Table 14-3. QMR Field Descriptions (continued)
13
13
12
12
11
11
®
Integrated Microprocessor User’s Manual, Rev. 3
10
10
9
9
8
8
Description
7
7
6
6
Chip selects are active low
A = QDLYR[QCD]
B = QDLYR[DTL]
5
5
4
4
3
3
2
2
1
1
Freescale Semiconductor
0
0
B
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