DM9008AEP_06 DAVICOM [Davicom Semiconductor, Inc.], DM9008AEP_06 Datasheet - Page 28

• Manufacturer Part Number: DM9008AEP_06
• Description: Ethernet Controller with General Processor Interface
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

Preliminary
Version: DM9008AEP-DS-P03
Dec. 14, 2006
0.14
0.13
0.12
0.11
0.10
0.9
0.8
0.7
Auto-negotiatio
Speed selection
Auto-negotiation
Duplex mode
Collision test
Power down
Loopback
n enable
Restart
Isolate
0,RW/SC Restart Auto-negotiation
0, RW
1, RW
1, RW
0, RW
0,RW
1,RW
0,RW
returning a value of one until the reset process is completed
Loopback
Loop-back control register
1 = Loop-back enabled
0 = Normal operation
Speed Select
1 = 100Mbps
0 = 10Mbps
Link speed may be selected either by this bit or by
auto-negotiation. When auto-negotiation is enabled and bit 12
is set, this bit will return auto-negotiation selected medium
type
Auto-negotiation Enable
1 = Auto-negotiation is enabled, bit 8 and 13 will be in
auto-negotiation status
Power Down
While in the power-down state, the PHY should respond to
management transactions. During the transition to
power-down state and while in the power-down state, the
PHY should not generate spurious signals on the MII
1=Power down
0=Normal operation
Isolate
Force to 0 in application.
1 = Restart auto-negotiation. Re-initiates the auto-negotiation
process. When auto-negotiation is disabled (bit 12 of this
register cleared), this bit has no function and it should be
cleared. This bit is self-clearing and it will keep returning to a
value of 1 until auto-negotiation is initiated by the DM9008A.
The operation of the auto-negotiation process will not be
affected by the management entity that clears this bit
0 = Normal operation
Duplex Mode
1 = Full duplex operation. Duplex selection is allowed when
Auto-negotiation is disabled (bit 12 of this register is cleared).
With auto-negotiation enabled, this bit reflects the duplex
capability selected by auto-negotiation
0 = Normal operation
Collision Test
1 = Collision test enabled. When set, this bit will cause the
COL signal to be asserted in response to the assertion of
TX_EN in internal MII interface.
Ethernet Controller with General Processor Interface
DM9008AEP
28