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DM560P
V.90 Integrated Data/Fax/Voice/Speakerphone Modem Device Set
Preliminary
21
Version: DM560P-DS-P07
August 11, 2000
Plug and Play Isolation Sequence
The Plug and Play isolation sequence is divided into
four states: Wait for Key, Sleep, Isolation, and
Configuration. The state transitions for the Plug and
Play ISA card are shown below:
POWER UP
RETDRV OR
RESET COMMAND
WAIT FOR KEY
STATE
ACTIVE COMMANDS
NO ACTIVE
COMMANDS
SLEEP
STATE
ACTIVE COMMANDS
RESET
RESET CSN
WAIT FOR KEY
WAKE(CSN)
ISOLATION
STATE
ACTIVE COMMANDS
RESET
RESET CSN
WAIT FOR KEY
SET RD_DATA PORT
SERIAL ISOLATION
WAKE(CSN)
SET CSN
CONFIG
STATE
ACTIVE COMMANDS
RESET
RESET CSN
WAIT FOR KEY
WAKE(CSN)
RESOURCE DATA
STATUS
LOGICAL DIVICE
I/O RANGE CHECK
ACTIVATE
CONFIGURATION REGISTERS
SET CSN
WAKE=0 & CSN=0
WAKE<>CSN
WAKE<>0 & WAKE=CSN
LOSE SERIAL ISOLATION OR
WAKE<>CSN
Plug and Play ISA Card State Transitions
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.
PnP Reset CSN initializes all ISA PnP card CSNs to zero. The DM Reset CSN command initializes all DM6583
PnP card CSNs to zero.
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