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KS8993M Datasheet(PDF) 61 Page - Micrel Semiconductor

Part No. KS8993M
Description  Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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KS8993M Datasheet(HTML) 61 Page - Micrel Semiconductor

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Micrel, Inc.
KS8993M/ML/MI
April 2005
61
M9999-041205
Register 29 (0x1D): Port 1 Control 13
Register 45 (0x2D): Port 2 Control 13
Register 61 (0x3D): Reserved, not applied to port 3 (continued)
Bit
Name
R/W
Description
Default
4
Disable far end
fault
R/W
= 1, disable far end fault detection and pattern
transmission.
= 0, enable far end fault detection and pattern
transmission
0
Note: Only port
1 supports fiber.
This bit is
applicable to
port 1 only.
3
Power-down
R/W
= 1, power-down
= 0, normal operation
0
2
Disable auto
MDI/MDI-X
R/W
= 1, disable auto MDI/MDI-X function
= 0, enable auto MDI/MDI-X function
0
For port 2,
P2MDIX disable
pin value during
reset.
1
Force MDI-X
R/W
If auto MDI/MDI-X is disabled,
= 1, force PHY into MDI mode (transmit on
RXP/RXM pins)
= 0, force PHY into MDI-X mode (transmit on
TXP/TXM pins)
0
For port 2,
P2MDIX pin
value during
reset.
0
Loopback
R/W
= 1, perform loopback, as indicated:
Port 1 Loopback (reg. 29, bit 0 = ‘1’)
Start: RXP2/RXM2 (port 2)
Loopback: PMD/PMA of port 1’s PHY
End: TXP2/TXM2 (port 2)
Port 2 Loopback (reg. 45, bit 0 ‘1’)
Start: RXP1/RXM1 (port 1)
Loopback: PMD/PMA of port 2’s PHY
End: TXP1/TXM1 (port 1)
= 0, normal operation
0
Register 30 (0x1E): Port 1 Status 0
Register 46 (0x2E): Port 2 Status 0
Register 62 (0x3E): Reserved, not applied to port 3
Bit
Name
R/W
Description
Default
7
MDI-X status
RO
= 1, MDI-X
= 0, MDI
0
6
AN done
RO
= 1, AN done
= 0, AN not done
0
5
Link good
RO
= 1, link good
= 0, link not good
4
Partner flow
control
capability
RO
= 1, link partner flow control (pause) capable
= 0, link partner not flow control (pause) capable


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