Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 172)

Maps and Registers
ATCA-7470 Installation and Use (6806800P15K) 172
6.4.12.1 Hot-Plug Virtual Pin Port Registers
Each Port has a Hot Plug Interface, which can be accessed by the Hot-Plug Virtual Pin Port
Register.
Table 6-36 Hot-Plug Virtual Pin Port Register
Address Offset:
CPU0: Port 1: 0x30,Port 2: 0x31, Port 3: 0x32, Port 4: 0x33
CPU1: Port 1: 0x38,Port 2: 0x39, Port 3: 0x3A, Port 4: 0x3B
Bit
Signal
Name
Direction Description Default Access
0 ANTLED Output This indicator is connected to the Attention
LED on the baseboard. For a precise
definition, refer to PCI Express Base
Specification, Revision 3.0. Ext. r
1 PWRLED Output This indicator is connected to the Power
LED on the baseboard. For a precise
definition, refer to PCI Express Base
Specification, Revision 3.0. Ext. r
2 PWREN# Output Output signal allowing software to enable
or disable power to a PCI Express slot. Ext. r
3 BUTTON# Input Input signal per slot which indicates that
the user wishes to hot remove or hot add a
PCI Express card/module. 1 IPMC: r/w
LPC: r
4 PRSNT# Input Input signal that indicates if a hot
pluggable PCI Express card/module is
currently plugged into the slot. 1 IPMC: r/w
LPC: r
5 PWRFLT# Input Input signal from the power controller to
indicate that a power fault has occurred.