IDT 89HPES12T3G2, Preliminary User'S Manual

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IDT Configuration Registers
PES12T3G2 User Manual 8 - 60 January 28, 2013
Notes
GPESTS - General Purpose Event Status (0x454)
Physical Layer Control and Status Registers
SERDESCTL- SerDes Control (0x500)
2 P2GPEE RW 0x0
Sticky
Port 2 General Purpose Event Enable. When this bit is set, the
hot-plug INTx, MSI and PME event notification mechanisms
defined by the PCIe base 2.0 specification are disabled for port 2
and are instead signalled through General Purpose Event (GPEN)
signal assertions. GPEN is an alternate function of GPIO[7].
3 Reserved RO 0x0 Reserved field.
4 P4GPEE RW 0x0
Sticky
Port 4 General Purpose Event Enable. When this bit is set, the
hot-plug INTx, MSI and PME event notification mechanisms
defined by the PCIe base 2.0 specification are disabled for port 4
and are instead signalled through General Purpose Event (GPEN)
signal assertions. GPEN is an alternate function of GPIO[7].
31:5 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description
1:0 Reserved RO 0x0 Reserved field.
2 P2GPES RO 0x0 Port 2 General Purpose Event Status. When this bit is set, the
corresponding port is signalling a general purpose event by assert-
ing the GPEN signal. This bit is never set if the corresponding gen-
eral purpose event is not enabled in the GPECTL register.
GPEN is an alternate function of GPIO[7] and GPIO[7] is asserted
only if enabled to operate as an alternate function.
3 Reserved RO 0x0 Reserved field.
4 P4GPES RO 0x0 Port 4 General Purpose Event Status. When this bit is set, the
corresponding port is signalling a general purpose event by assert-
ing the GPEN signal. This bit is never set if the corresponding gen-
eral purpose event is not enabled in the GPECTL register.
GPEN is an alternate function of GPIO[7] and GPIO[7] is asserted
only if enabled to operate as an alternate function.
31:5 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description
7:0 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description