MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 267

• 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

12.3.2
The following are detailed register diagrams and field descriptions.
12.3.2.1
Once every 1 ms, the USB host issues a start-of-frame packet containing a frame number. The FNR register
captures this frame number.
Table 12-3
12.3.2.2
FNMR is used to signal, via the FRM_MAT interrupt, when a particular frame number is issued by the
USB host. To avoid a false match during intermediate states of a byte write operation to the FNMR,
Figure
Table 12-4
Freescale Semiconductor
15–11
10–0
15–11
10–0
Bits
Bits
12-4, byte accesses to this register are not supported and cause an access error.
Name
FRM_MAT Frame number match value. Contains the USB frame number match value. When the FNR value equals
FRM
—
Name
describes FNR fields.
describes FNMR fields.
Register Descriptions
—
Reset
Reset
Field
Field
USB Frame Number Register (FNR)
Addr
USB Frame Number Match Register (FNMR)
Addr
R/W
R/W
Reserved, should be cleared.
USB frame number. Contains the current USB frame number. FRM is updated with the new frame number
each time the device successfully receives a start-of-frame (SOF) packet from the USB host. The new frame
number is contained in the SOF packet.
15
15
Reserved, should be cleared
the value in the register, a FRM_MAT interrupt is generated.
MCF5272 ColdFire
Figure 12-4. USB Frame Number Match Register (FNMR)
Figure 12-3
Figure 12-3. USB Frame Number Register (FNR)
—
—
Table 12-4. FNMR Field Descriptions
Table 12-3. FNR Field Descriptions
®
11
11
Integrated Microprocessor User’s Manual, Rev. 3
shows the FNR.
10
10
0000_0000_0000_0000
0000_0000_0000_0000
MBAR + 0x1002
MBAR + 0x1006
Read
R/W
Description
Description
FRM_MAT
FRM
Universal Serial Bus (USB)
0
0
12-9