CS5535 datasheet(267/555 Pages) NSC

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USB Register Descriptions (Continued)

CMD_ERR_FLAG

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.

SYS_ERR_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.

PARIN_ERR_

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.

PAROUT_ERR_

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.

TIMEOUT_ERR_

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.

PA_SVADRS_

ERR_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.

PA_TABORT_

ERR_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.

PA_MABORT_

ERR_FLAG

PCI Adapter Master Abort Error. If high, records that an ERR was generated

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.

EXCEP_ERR_

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.

34:33

RSVD

Reserved. Writes don’t care. Reads return 0.

UNEXP_TYPE_

ERR_FLAG

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.

31:12

RSVD

Reserved. Writes don’t care. Reads return 0.

CMD_ERR_EN

Command Error Enable. Write 1 to enable CMD_ERR_FLAG (bit 43) and to allow the

event to generate an ERR.

USBC_GLD_MSR_ERROR Bit Descriptions (Continued)

Bit

Name

Description

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