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MAX_PAYLOAD_SUPPORT
PHANTOM_FUNC
EXTENDED_TAG
L0S_ACCEPTABLE_LATENCY
L1_ACCEPTABLE_LATENCY
ATTN_BUTTON_PRESENT
ATTN_INDICATOR_PRESENT
POWER_INDICATOR_PRESENT
CAPTURED_SLOT_POWER_LIMIT
CAPTURED_SLOT_POWER_SCALE
The Device Capabilities register identifies PCI Express device specific capabilities.
Field Name
CORR_ERR_EN
NON_FATAL_ERR_EN
FATAL_ERR_EN
USR_REPORT_EN
RELAXED_ORD_EN
MAX_PAYLOAD_SIZE
EXTENDED_TAG_EN
PHANTOM_FUNC_EN (R)
AUX_POWER_PM_EN (R)
NO_SNOOP_EN
MAX_REQUEST_SIZE (R)
The Device Control register controls various PCI Express features.
Field Name
CORR_ERR
NON_FATAL_ERR
FATAL_ERR
© 2007 Advanced Micro Devices, Inc.
Proprietary
2:0
4:3
5
8:6
11:9
12
13
14
25:18
27:26
DEVICE_CNTL - RW - 16 bits - [CFGF0_DEC:0x60] [HIDEC:0x5060]
Bits
0
1
2
3
4
7:5
8
9
10
11
14:12
DEVICE_STATUS - RW - 16 bits - [CFGF0_DEC:0x62] [HIDEC:0x5062]
Bits
0
1
2
0x0
0=128B size
0x0
0=No Phantom Functions
0x1
0=8 Bit Tag Supported
0x0
This field indicates the acceptable total latency that an Endpoint can
withstand due to the transition from L0s state to the L0 state.
0x0
This field indicates the acceptable latency that an Endpoint can with-
stand due to the transition from L1 state to the L0 state.
0x0
0=Attention Button Present
0x0
0=Attention Indicator Present
0x0
0=Power Indicator Present
0x0
(Upstream Ports only) In combination with the Slot Power Limit Scale
value, specifies the upper limit on power supplied by slot.
0x0
Specifies the scale used for the Slot Power Limit Value.
Default
0x0
Correctable Error Reporting Enable.
0=Disable
1=Enable
0x0
Non-Fatal Error Reporting Enable.
0=Disable
1=Enable
0x0
Fatal Error Reporting Enable.
0=Disable
1=Enable
0x0
Unsupported Request (UR) Reporting Enable.
0=Disable
1=Enable
0x1
Enable Relaxed Ordering.
0=Disable
1=Enable
0x0
Max Payload Size.
0=128B size
0x0
Extended Tag Field Enable.
0=Disable
1=Enable
0x0
Phantom Functions Enable.
0=Disable
1=Enable
0x0
Auxiliary (AUX) Power PM Enable.
0=Disable
1=Enable
0x1
Enable No Snoop.
0=Disable
1=Enable
0x0
Max Read Request Size.
0=128B size
Default
0x0
This bit indicates status of correctable errors detected.
0x0
This bit indicates status of Nonfatal errors detected.
0x0
This bit indicates status of Fatal errors detected.
Bus Interface Registers
Description
Description
M56 Register Reference Manual
2-67
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