CP690
Hotswap
ID 20955, Rev. 03
© 2002 PEP Modular Computers GmbH
Page 4 - 7
Figure 4-2: Hotswap State Machine
Table 4-2: Hotswap Register Bits
Bit Name
Signal on 21154
EXT
GPIO[2]
INS
GPIO[3]
LOO
GPIO[0]
EIM
GPIO[1]
Attention!
GPIO[2:3] have to be configured as inputs. A different configuration may dam-
age your bridge device.
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