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

Freescale Semiconductor

21

CPM86

Random PHY Number For FCC RX in Single-PHY Master Mode

Date Added: 5/21/2002

Description: When the FCC Receive ATM controller is configured for Single PHY Master mode

(FPSMR[RUMP]=0, FPSMR[RUMS]=0) and FPSMR [LAST PHY / PHY ID] is not equal to ze-

ro, a random PHY ID might be allocated to the incoming cells instead of the expected zero (for

Single-PHY). This will result in a loss of cells. This configuration is typical when using the FCC

Transmit ATM controller in Multi-PHY Master mode together with the FCC Receive ATM con-

troller in Single PHY Master mode.

Workaround: The Address Lookup Mechanism should be created in such a way that for any

PHY Addr input, the Output will be as for PHY 0.

Fix Plan: RevA

0K40A

CPM88

MCC Transmit GUN when MCC STOP RX CPCR Command is used

Date Added: 10/15/2002

Description: An MCC may experience a highly intermittent transmit GUN event indication, re-

lated to MCC receive channels that have been stopped via the MCC STOP RX host CPCR com-

mand. This GUN can happen unrelated to internal CPM loading or other external factors.

Workaround: Avoid using MCC STOP RX command using one of the following mechanisms:

1.

Simply stop the TDM or

2.

Use shadow RAM and dynamically remove the desired MCC RX channel entry

from SIRAM programming (see 8101 Reference Manual chapter 20). The follow-

ing procedure should be utilized, using an extra redundant shadow RAM switch.

This is done to provide a full TDM frame’s amount of time to ensure receive activ-

ity is complete and will avoid the issue:

a. Re-program shadow SIRAM to remove channel to be stopped.

b. Switch to shadow SIRAM and wait for that TDM’s bit in the SIxSTR

register to change to indicate switch complete.

c. Copy this new shadow RAM programming back to the main SIRAM

bank.

d. Switch to active RAM, again wait for switch to complete.

e. Then software can re-initialize or modify the removed channel’s RX

parameters.

System Number: 2905

Fix Plan: RevA

0K40A

CPM95

ATM False Indication of Mis-Inserted Cells

Date Added: 2/25/2003

Description: There is a false indication of unassigned bits in the PHY:VPI:VCI which could

cause ATM cells to be treated as mis-inserted cells and therefore be discarded.

Workaround: Use microcode patch available from Freescale.

Fix Plan: RevA

0K40A

Table 2. Silicon Errata (Continued)

Errata

Number

Errata Description

Applies

to Mask