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EB632 Datasheet(PDF) 62 Page - Freescale Semiconductor, Inc |
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EB632 Datasheet(HTML) 62 Page - Freescale Semiconductor, Inc |
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62 / 112 page  Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2 62 Freescale Semiconductor Errata CPM6 Erroneous Report of Overrun on FCC Date Added: 5/30/2000 Description: Spurious overrun indications on the FCC may occur in the following cases: 1. After stop transmit command is issued. 2. Following CTS lost condition. 3. Late collision under ethernet. Workaround: None System Number: 1746 0K40A 1K42A 2K42A CPM7 Erroneous Report of Overrun With Fast Ethernet Date Added: 5/30/2000 Description: If the CRS (carrier sense) signal is deasserted while fast ethernet frame is transmit- ted, an overrun error may occur and the FCC may have to be reset. Workaround: None System Number: 1752 0K40A 1K42A 2K42A CPM8 Error on Transmit On Demand Register Date Added: 5/30/2000 Description: The TODR mechanism may freeze serial channels. Workaround: Do not use TODR. System Number: 2484 0K40A 1K42A 2K42A CPM9 Erroneous Reception of ATM Cell Date Added: 5/30/2000 Description: Under certain conditions, an ATM receiver may receive cells of PHYs which were not addressed for it. Details of the condition: • ATM receiver in UTOPIA slave mode. • FIFO full condition occurred (this happens only when the transmitter violates the UTOPIA standard requirements: transmits data without CLAV). • Transmitter changed selected PHY number. • FIFO full condition ended (CPM read some data from FIFO). Workaround: Use different VPI/VCI for different PHYs or expect the cells to be discarded by higher-level protocol software. System Number: 2493 0K40A 1K42A 2K42A 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 0K40A 1K42A 2K42A Table 48. Errata Resolved in Mask Set 2K87M (Continued) Errata Number Errata Description Applies to Mask |
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