IDT 89HPES16NT2, Руководство пользователя

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IDT Non-Transparent Mode Operation
PES16NT2 User Manual 10 - 70 April 15, 2008
Notes
PCIE_PCIEDSTS - PCI Express Device Status (0x04A)
7:5 MPS RW 0x0 Max Payload Size. This field sets maximum TLP payload
size for the device.
0x0 - (s128) 128 bytes max payload size
0x1 - (s256) 256 bytes max payload size
0x2 - (s512) 512 bytes max payload size
0x3 - (s1024) 1024 bytes max payload size
0x4 - (s2048) 2048 bytes max payload size
0x5 - reserved (treated as 128 bytes)
0x6 - reserved (treated as 128 bytes)
0x7 - reserved (treated as 128 bytes)
8 ETFEN RW 0x0 Extended Tag Field Enable . The tag field is not modified
in transactions that pass through the non-transparent
bridge. In addition, the tag field is always zero for all trans-
actions generated by the internal or external endpoints of
the non-transparent bridge. Therefore, this field has no
functional effect on the behavior of the non-transparent
bridge.
9 PFEN RO 0x0 Phantom Function Enable . The bridge does not support
phantom function numbers. Therefore, this field is hard-
wired to zero.
10 AUXPMEN RO 0x0 Auxiliary Power PM Enable .The device does not imple-
ment this capability.
11 ENS RW 0x0 Enable No Snoop. The non-transparent bridge does not
generate transactions with the No Snoop bit set and
passes transactions through the bridge with the No Snoop
bit unmodified. Therefore, this field has no functional effect
on the behavior of the non-transparent bridge.
14:12 MRRS RW 0x2 Maximum Read Request Size. The non-transparent
bridge does not generate transactions larger than 128
bytes and passes transactions through the bridge with the
size unmodified. Therefore, this field has no functional
effect on the behavior of the non-transparent bridge.
15 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
0 CED RW1C 0x0 Correctable Error Detected . This bit indicates the status
of correctable errors. Errors are logged in this register
regardless of whether error reporting is enabled or not.
1 NFED RW1C 0x0 Non-Fatal Error Detected . This bit indicates the status of
correctable errors. Errors are logged in this register regard-
less of whether error reporting is enabled or not.
2 FED RW1C 0x0 Fatal Error Detected . This bit indicates the status of Fatal
errors. Errors are logged in this registers regardless of
whether error reporting is enabled or not.
Bit
Field
Field
Name
Type
Default
Value
Description