MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 238
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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Ethernet Module
11.5.10 FIFO Receive Start Register (FRSR)
The FRSR register,
FIFO. FRSR marks the boundary between the transmit and receive FIFOs. The transmit FIFO uses
addresses from TFSR to FRSR - 4. The receive FIFO uses addresses from FRSR to FRBR - 4. The value
in this register must be added to MBAR + 0x800 to determine the absolute address.
FRSR needs to be written only to change the default value.
Table 11-17
11-20
31–11
Bits
9–2
1–0
10
Reset
Reset
Field
Field
Addr
R/W
R/W
R_FSTART
describes the FRSR fields.
Name
—
—
1
31
15
Figure
MCF5272 ColdFire
0000_0
Reserved, should be cleared.
Reserved, should be set.
Receive FIFO starting address. Address of first receive FIFO location. Acts as delimiter between
receive and transmit FIFOs.
Reserved, should be cleared.
—
11-14, is programmed by the user to indicate the starting address of the receive
Figure 11-14. FIFO Receive Start Register (FRSR)
11
Table 11-17. FRSR Field Descriptions
10
1
1
®
Integrated Microprocessor User’s Manual, Rev. 3
9
0000_0000_0000_0000
MBAR + 0x8D0
Read/Write
Read/Write
—
01_0000_00
R_FSTART
Description
2
Freescale Semiconductor
1
00
—
16
0
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