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