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DM9008

ISA/Plug & Play Super Ethernet Contoller

Davicom Semiconductor, Inc. 

Plug and Play Isolation Sequence

DM9008

ISA/Plug & Play Super Ethernet Contoller

The Plug and Play isolation sequence is divided into four states: Wait for Key, Sleep, Isolation, and Config states. The state transitions

for the Plug and Play ISA card are shown below:

Notes:

1. CSN = Card Select Number.

2. RSTDRV causes a state transition from the current state to Wait for Key and sets all CSNs to zero.

3. The Wait for Key command causes a state transition from the current state to Wait for Key.

4. The Reset CSN commands include PnP Reset, CSN and DM Reset CSN commands.

The former sets all CSNs of ISA PnP cards to zero, while the latter only sets CSNs of DM9008 PnP cards to zero.

Neither command will cause a state transition.

Figure 3. Plug and Play ISA Card State Transitions

64

Final

Version: DM9008-DS-F02

November 30, 2000

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