MSC8113 Reference Manual, Rev. 0
25-96
Freescale Semiconductor
Ethernet Controller
25.17.7 MIIGSK Registers
The MIIGSK contains nine memory-mapped, read/write, 32-bit registers. All MIIGSK registers
are accessible via the IPI line.
MIIGSK_CFGR contains configuration bits for various Ethernet controller features and modes.
MIIGSK_CFGR
MIIGSK Configuration 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
—
FRCONT
—
LBMODE EMODE
—
IFMODE
Type
R
R/W
R
R/W
R
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 25-72. MIIGSK_CFGR Bit Descriptions
Bit
Reset
Description
Settings
—
0–24
0
Reserved.
FRCONT
25
0
Frequency Control.
Determines the frequency of the clock source to the
Ethernet controller to support 10/100 Mbps operations
in RMII/SMII modes of operation. (In SMII mode,
ETHCLOCK, and in RMII mode, ETHREF_CLK.
Note:
This field has no effect in MII mode.
0 In RMII mode, the clock source
(ETHREF_CLK) is 50 MHz to support 100
Mbps operation. In SMII mode, the clock
source (ETHCLOCK) is 125 MHz to support
100 Mbps operation.
1
In RMII mode, the clock source
(ETHREF_CLK) is divided by 10 (5 MHz) to
support 10 Mbps Operation. In SMII mode,
the clock source (ETHCLOCK) is divided by
10 (12.5 MHz) to support 10Mbps
Operation.
—
26
0
Reserved.
LBMODE
27
0
RMII/SMII Sync Out - Internal Loopback Mode
Causes the Ethernet controller RMII/SMII transmit
outputs to be looped back to the Ethernet controller
RMII/SMII receive inputs.Proper operation is
guaranteed only when:
• MIIGSK_CFGR[IFMODE] = 01 or 10
• MACCFG[MIILB]=0
• MIIGSK_CFGR[EMODE] = 0
0
Normal operation.
1
RMII/SMII transmit outputs are looped back
to the RMII/SMII receive inputs.
EMODE
28
0
Echo Mode
Causes the Ethernet controller MII receive inputs from
the MII PHY to be looped back to the Ethernet
controller transmit outputs to the MII PHY.
Proper operation is guaranteed only when:
• MIIGSK_CFGR[IFMODE] = 00
• MIIGSK_CFGR[LBMODE] = 0
0
Normal operation (the default).
1
MII receive inputs are looped back to the
Ethernet controller transmit outputs.
Summary of Contents for MSC8113
Page 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Page 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Page 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Page 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Page 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Page 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...