Silicon Errata for the MSC8101 Processor, Mask 0K40A, Rev. 5

12

Freescale Semiconductor

CPM10

Error in ATM Underrun Report

Date Added: 5/30/2000

Description: In ATM, a Transmit internal rate underrun error is not reported correctly in the

TIRU field of the FCCE register. In most cases, TIRU is not set in the FCCE when an internal rate

underrun error occurs. In some rare cases that depend on internal sequences within the communi-

cations controller, the TIRU bit may be set as expected when the error should be reported.

Workaround: None

System Number: 2611

Fix Plan: Rev A

0K40A

CPM11

False Indication of Shared Flag

Date Added: 5/30/2000

Description: FCC-TX HDLC - FCT_TXD (data out) changes from 1-->0 for 1 ser_clock period,

few clocks after the reset command from MAIN is given. A false shared flag can be detected at

the receiver if the last bit before reset was 0, and the receiver considers it as a closing flag of the

frame. In most of cases, a CRC error is generated and the frame is discarded.

Workaround: None

System Number: 3024

Fix Plan: Rev A

0K40A

CPM112

FCC Missing Reset at OverRun

Date Added: 12/19/2003

Description: TxBD may not be closed for FCC in Half-duplex 10BaseT Ethernet. There may be

a mismatch between the actual transmitted BD and the BD for which status is updated. As a result,

the status of one to three BDs may not be updated, and they would appear "Ready", although the

associated frames have been transmitted (assuming a frame per BD).

Workaround: Use microcode patch provided by Freescale.

System Number: 11064, 11067

Fix Plan: N/A

0K40A

CPM13

Error in Random Number Generation

Date Added: 5/30/2000

Description: In Fast Ethernet transmit, when more then one (up to four) frames reside in the FCC

FIFO, random number generation (for collision wait) may produce the same number for all four

frames.

Workaround: None

System Number: 3421

Fix Plan: Rev A

0K40A

CPM14

Corruption of ATM Cells

Date Added: 5/30/2000

Description: Corruption of ATM cells may occur when the following combination is used:

AAL1 with UDC in which the user-defined header size is 9 to 12 octets and PM is not used.

Workaround: Since this problem appears in a very specific condition as described above, avoid-

ing any of the elements (e.g., using cell header of 8 octets) eliminates it.

System Number: 3488

Fix Plan: Rev A

0K40A

Table 2. Silicon Errata (Continued)

Errata

Number

Errata Description

Applies

to Mask