IDT 89HPES24N3A, User Manual

Page: 156 / 168

IDT Configuration Registers
PES24N3A User Manual 9 - 62 April 10, 2008
Notes
SWPERCTL - Switch Parity Error Reporting Control (0x748)
SWPECNT - Switch Parity Error Count (0x74C)
SWTOCTL - Switch Time-Out Control (0x750)
SWTOSTS - Switch Time-Out Status (0x754)
Bit
Field
Field
Name
Type
Default
Value
Description
1:0 EEPE RW 0x2 End-to-End Parity Error Reporting. This field controls the
manner in which end-to-end parity errors detected at this
port are reported. An end-to-end parity error is reported as
specified in this field whenever the EEPE bit in the Switch
Parity Error Status (SWPESTS) register transitions from a
zero to a one.
0x0 - (none) The end-to-end parity error is not reported
0x1 - (correctable) The port generates an ERR_COR mes-
sage to the root.
0x2 - (nonfatal) The port generates an ERR_NONFATAL
message to the root.
0x3 - (fatal) The port generates an ERR_FATAL message to
the root.
31:2 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 EEPEC RCW 0x0
Sticky
End-to-End Parity Error Count. This field is incremented
each time an end-to-end parity error is detected at the port
until it saturates at its maximum count value (i.e., it does not
roll over from 0xFF to 0x00).
This counter saturates at its maximum value.
Reading this field causes it to be cleared.
31:8 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
0 ETO RW 0x1
Sticky
Enable Switch Time-outs. When this bit is set, switch time-
outs for this port are enabled. In this mode, a TLP will be
discarded if it has been in this port’s input queue for more
than the specified switch core time-out limit. See section
Switch Time-Outs on page 3-16 for more information.
31:1 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
0 PTLPTO RW1C 0x0 Posted TLP Time-Out. This bit is set when a TLP is dis-
carded from the port’s IFB posted queue because of a time-
out.
1 NPTLPTO RW1C 0x0 Non-Posted TLP Time-Out. This bit is set when a TLP is
discarded from the port’s IFB non-posted queue because of
a time-out.