AM79C961A(1996) 데이터 시트보기 (PDF) - Advanced Micro Devices

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AM79C961A
(Rev.:1996)

PCnet™-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA

Advanced Micro Devices 

PRELIMINARY

Power up

RESET_DRV

Set CSN = 0

State

Wait for Key

Active Commands

no active commands

Initiation Key

State

Sleep

Active Commands

Reset

Wait for Key

Wake[CSN]

State

Isolation

Lose serial location OR WAKE <> CSN

(WAKE <> CSN)

Active Commands

State

Reset

Wait for Key

Set RD_DATA Port

Serial Isolation

Wake[CSN]

Set CSN

Config

Active Commands

Reset

Wait for Key

Wake[CSN]

Resource Data

Status

Logical Device

I/O Range Check

Activate

Configuration Registers

Notes:

1. CSN = Card Select Number.

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

zero. All logical devices are set to their power-up configuration values.

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

Plug and Play ISA Card State Transitions

20

Am79C961A

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