Ethernet Controller Programming Model
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
25-93
MIIMCOMR provides the ability to perform continuous read cycles (called a scan cycle),
although scan cycles are not explicitly defined in the standard. If a scan cycle is requested, the
device performs repetitive read cycles of the PHY status register, for example. PHY link
characteristics can therefore be monitored more efficiently.
MIIMCOMR
MII Management Command Register
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
—
Type
R
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
—
SCYC RCYC
Type
R
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 25-67. MIIMCOMR Bit Descriptions
Bit
Reset
Description
—
0–29
0
Reserved. Write to zero for future compatibility.
SCYC
30
0
Scan Cycle
Causes the MII management to perform continuous read cycles, which is useful for monitoring link
fail, for example.
RCYC
31
0
Read Cycle
Causes the MII management to perform a single read cycle. If RCYC is set, an MII management
read cycle is performed using the PHY address at MIIMADD[PHYADDR] and the register address
(at MIIMADD[RADDR]. The read data is returned in the MIIMSTATR[PHYS] bit.
Содержание MSC8113
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Страница 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Страница 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Страница 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Страница 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Страница 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Страница 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Страница 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Страница 544: ...MSC8113 Reference Manual Rev 0 16 46 Freescale Semiconductor Direct Memory Access DMA Controller ...
Страница 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Страница 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Страница 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
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Страница 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
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Страница 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
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