CHAPTER 22:Media Local Bus Interface (MediaLB)
838
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
[bit31] MDE : MediaLB Device Enable
Enables the operation of MediaLB interface.
Bit
Description
0
Disables MediaLB Interface.
1
Enables MediaLB Interface based on the other bits in the register.
[bit30] LBM : Loop-Back Mode Enable
Sets whether the loopback test for the MediaLB bus between even logical channel N (reception setting)
and odd logical channel N+1 (transmission setting) is enabled or disabled.
Bit
Description
0
Normal operation. Disables Loop-back test mode.
1
Enables Loop-back test mode.
Note:
−
For more information on Loop-BackTest mode please contact SMSC support.
[bit29:28] MCS[1:0] : MediaLB Clock Select
Sets the MediaLB transfer rate.
This field must be programmed by the system software to reflect the MLBn_MLBCLK speed.
Bits
Description
00
256Fs - supports 8 quadlets per frame
01
512Fs - supports 16 quadlets per frame
10
1024Fs - supports 32 quadlets per frame
11
Reserved
It is prohibited to set this bit field to "11"
[bit27] M5PS : MediaLB 5-Pin Select
Selects MediaLB 5-pin or 3-pin configuration.
Bit
Description
0
3-pin MediaLB mode
1
5-pin MediaLB mode
Note:
−
This device does not support 5-pin MediaLB interface and therefore writing "1" to this bit is
prohibited. Make sure the bit is set to "0".
Содержание S6J3200 Series
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