MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 348

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

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

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