cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 267

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
USB Register Descriptions
34:33
31:12
Bit
43
42
41
40
39
38
37
36
35
32
11
Name
CMD_ERR_FLAG
SYS_ERR_FLAG
PARIN_ERR_
FLAG
PAROUT_ERR_
FLAG
TIMEOUT_ERR_
FLAG
PA_SVADRS_
ERR_FLAG
PA_TABORT_
ERR_FLAG
PA_MABORT_
ERR_FLAG
EXCEP_ERR_
FLAG
RSVD
UNEXP_TYPE_
ERR_FLAG
RSVD
CMD_ERR_EN
USBC_GLD_MSR_ERROR Bit Descriptions (Continued)
Description
Command Error Flag. If high, records that an ERR was generated because a PCI
device asserted the embedded PCI bus Parity Error signal. (The PCI Adapter slave
interface generated a command error on a command received from the PCI device, or
when the 2 LSBs of the address received from the PCI device in the address phase are
non-zero.) Write 1 to clear the flag; writing 0 has no effect. CMD_ERR_EN (bit 11) must
be high to generate ERR and set flag.
System Error Flag. If high, records that an ERR was generated because a PCI device
asserted the embedded PCI bus System Error signal. Write 1 to clear the flag; writing 0
has no effect. SYS_ERR_EN (bit 10) must be high to generate ERR and set flag.
Parity Error In Error Flag. If high, records that an ERR was generated because a Par-
ity Error on a PCI device master to PCI Adapter target transaction occurred. Write 1 to
clear the flag; writing 0 has no effect. PARIN_ERR_EN (bit 9) must be high to generate
ERR and set flag.
Parity Error Out Error Flag. If high, records that an ERR was generated because a
Parity error on PCI Adapter master to PCI device target transaction occurred. Write 1 to
clear the flag; writing 0 has no effect. PAROUT_ERR_EN (bit 8) must be high to gener-
ate ERR and set flag.
Master Timeout Error Flag. If high, records that an ERR was generated because the
PCI Adapter completed a master bus cycle to the GeodeLink Adapter when the PCI
device failed to perform an expected retry after a disconnect. Write 1 to clear the flag;
writing 0 has no effect. TIMEOUT_ERR_EN (bit 7) must be high to generate ERR and
set flag.
PCI Adapter Slave Interface Address Parity Error Flag. If high, records that an ERR
was generated because the PCI Adapter slave interface generated a parity error on the
address received from the PCI device in the address phase. Write 1 to clear the flag;
writing 0 has no effect. PA_SVADRS_ERR_EN (bit 6) must be high to generate ERR
and set flag.
PCI Adapter Target Abort Error Flag. If high, records that an ERR was generated
because the PCI Adapter, as a target, aborted the PCI bus cycle. The GeodeLink
Adapter and the PCI Adapter complete the GeodeLink Transaction. Write 1 to clear the
flag; writing 0 has no effect. PA_TABORT_ERR_EN (bit 5) must be high to generate
ERR and set flag.
because the PCI device did not respond as a target. The PCI Adapter aborted the PCI
bus cycle and indicated to the GeodeLink Adapter to abort the GeodeLink Adapter
transaction. The GeodeLink Adapter completes the GeodeLink transaction and sets the
EXCP bit in any response packet. Write 1 to clear the flag; writing 0 has no effect.
PA_MABORT_ERR_EN (bit 4) must be high to generate ERR and set flag.
Exception Bit Error Flag. If high, records that an ERR was generated because the
EXCEP bit was set in THE response packet associated with a device master request.
Write 1 to clear the flag; writing 0 has no effect. EXCEP_ERR_EN (bit 3) must be high
to generate ERR and set flag.
Reserved. Writes don’t care. Reads return 0.
Unexpected Type Error Flag. If high, records that an ERR was generated because an
unexpected type or other “bad” GeodeLink transaction. This error is fatal and there is
no system recovery. The device (GeodeLink Adapter) will hang. Write 1 to clear the
flag; writing 0 has no effect. UNEXP_TYPE_ERR_EN (bit 0) must be high to generate
ERR and set flag.
Reserved. Writes don’t care. Reads return 0.
Command Error Enable. Write 1 to enable CMD_ERR_FLAG (bit 43) and to allow the
event to generate an ERR.
PCI Adapter Master Abort Error. If high, records that an ERR was generated
(Continued)
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