Altera Arria V Avalon-ST - Manual (Page 72)

Signal Direction Description
Input • [0]: Attention button pressed. This signal should be asserted
when the attention button is pressed. If no attention button
exists for the slot, this bit should be hardwired to 0, and the
Attention Button Present
bit (bit[0]) in the Slot capability
register parameter is set to 0.
Input • [1]: Presence detect. This signal should be asserted when a
presence detect circuit detects a presence detect change in the
slot.
Input • [2]: Manually-operated retention latch (MRL) sensor changed.
This signal should be asserted when an MRL sensor indicates
that the MRL is Open. If an MRL Sensor does not exist for the
slot, this bit should be hardwired to 0, and the
MRL Sensor
Present
bit (bit[2]) in the Slot capability register parameter is
set to 0.
Input • [3]: Power fault detected. This signal should be asserted when
the power controller detects a power fault for this slot. If this
slot has no power controller, this bit should be hardwired to 0,
and the
Power Controller Present
bit (bit[1]) in the Slot
capability register parameter is set to 0.
Input • [4]: Power controller status. This signal is used to set the
command completed bit of the
Slot Status
register. Power
controller status is equal to the power controller control signal.
If this slot has no power controller, this bit should be hardwired
to 0 and the
Power Controller Present
bit (bit[1]) in the Slot
capability register is set to 0.
Table 4-13: Mapping Between tl_cfg_sts and Configuration Space Registers
tl_cfg_sts Configuration Space Register Description
[62:59] Func1
[72:69] Func2
[82:79] Func3
[92:89] Func4
[102:99] Func5
[112:109] Func6
[122:119] Func7 Device Status Reg[3:0] Records the following errors:
• Bit 3: unsupported request
• Bit 2: fatal error
• Bit 1: non-fatal error
• Bit 0: correctable error
2014.12.15
Transaction Layer Configuration Space Signals 4-35
Interfaces and Signal Descriptions Altera Corporation
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