EB632 datasheet(67/112 Pages) FREESCALE

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Errata

Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2

Freescale Semiconductor

CPM45

Error in CLAV Sample Point

Date Added: 5/30/2000

Description: In FCC ATM transmit master mode (multiple PHY only), the CLAV signal is sam-

pled 5 clocks before the end of the cell instead of 4 clocks. This is relevant only for back-to-back

transmission sequence.

Workaround: In multiple PHY fix priority polling mode, by adding a dummy PHY, it is possible

to ensure that the dummy PHY is polled at payload 44 (5 clocks before the end of the cell). This

is possible since the cell length is constant and the number of PHY to poll is also constant.

System Number: 5031

0K40A

1K42A

2K42A

CPM46

Error in Internal Prioritization of CPM Resource

Date Added: 5/30/2000

Description: Each of the communication controllers (FCC, MCC, SCC, ...) issues request for

service to the CPM with different priorities in order to receive the necessary assistance in time.

Because of an internal connection error, the FCC3 request for service is issued with a much lower

priority than intended. Because of this, FCC3 may sporadically overrun when the CPM is heavily

loaded.

Workaround: None

System Number: 5663

0K40A

1K42A

2K42A

CPM48

Error in TDM

Date Added: 5/30/2000

Description: Disabling TDMx may interfere with the operation of TDMy if TDMy uses the SI-

RAM blocks directly above those used by TDMx. For example:

start address of TDMc = 0

start address of TDMb = 2

start address of TDMa = 4

start address of TDMd = 6

when disabling TDMa, TDMb is affected.

when disabling TDMb, TDMc is affected.

when disabling TDMd, TDMa is affected.

when disabling TDMc, No TDM is affected.

Workaround: Instead of disabling a TDM, the user can switch to a shadow RAM that contains

only non supported slots in its entries.

System Number: 5714

0K40A

1K42A

2K42A

CPM49

Error in FEC CAM address recognition

Date Added: 3/14/2002

Description: External CAM address recognition in Fast Ethernet controller does not function.

Workaround: Use microcode patch available from Freescale.

System Number: 5404

0K40A

1K42A

2K42A

Table 48. Errata Resolved in Mask Set 2K87M (Continued)

Errata

Number

Errata Description

Applies

to Mask

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