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Cp390 hotswap, Figure 4-2: hotswap state machine – Kontron CP390 User Manual

Page 28

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CP390

Hotswap

ID 19976, Rev. 0200

Page 4 - 6

® PEP Modular Computers GmbH

Figure 4-2: Hotswap State Machine

EXT: 0

INS: 0

ENUM#: 1

DISCONNECT#: 1

LED#: 1

HANDLE: closed

EIM: 0

LOO: 0

FFs valid: 0

EXT: 0

INS: 1

ENUM#: 0

DISCONNECT#: 1

LED#: 1

Handle: closed

EIM: 0

LOO: 0

FFs valid: 1

EXT: 0

INS: 0

ENUM#: 1

DISCONNECT#: 1

LED#: 1

Handle: closed

EIM: 0

LOO: 0

FFs valid: 1

EXT: 1

INS: 0

ENUM#: 0

DISCONNECT#: 1

LED#: 1

Handle: open

EIM: 0

LOO: 0

FFs valid: 1

EXT: 0

INS: 0

ENUM#: 1

DISCONNECT#: 0

LED#: 0

Handle: open

EIM: 0

LOO: 1

FFs valid: 1

Power on

Slot empty

Insertion

Extraction

Extraction armed

Disconnected

Toggle

EIM and LOO

Open Handle

Toggle

EIM and LOO

followed by

Setting LOO

Close Handle

Toggle

EIM and LOO

Physical

Insertion:

Power

Ramping,

Handle

is open

#: low active signal

FFs valid: PLD-internal Flip-Flops are valid.

EXT: 0

INS: 0

ENUM#: 1

DISCONNECT#: 1

LED#: 1

Handle: open

EIM: 0

LOO: 0

FFs valid: 0

Physical

Extraction:

Handle

is open