TDAT021G2 데이터 시트보기 (PDF) - Agere -> LSI Corporation
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TDAT021G2 Datasheet PDF : 310 Pages
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Advisory
May 2001
TDAT042G5 Device Advisory
for Version 1 and 1A of the Device
UTOPIA (UT) (continued)
UT7. Response to 0x1F MPHY Address
TDAT042G5 MPHY currently generates a polled status response to the address 0x1F (the null address), which is
not compliant with the UTOPIA Level 2 standard. The address 0x1F is valid for UTOPIA Level 3 operation.
Workaround
No workaround is available for this condition.
Corrective Action
This condition will be addressed in future versions of the device.
UT8. Far-End Loopback Bandwidth Limitations
In the STS-48/STM-16 mode (U3, U3+), looping back data at the far end (UTOPIA interface) can only be accom-
plished without cell/packet corruption at rates below the following, as shown in Table 5.
Table 5. Cell/Packet Corruption Rates
Mode
STS-48/STM-16
STS-12/STM-4
STS-3/STM-1
ATM
300 Mbits/s
70 Mbits/s
30 Mbits/s
Packet
Rate not yet determined
Rate not yet determined
Rate not yet determined
When cell/packet corruption occurs, the device reports transmit FIFO underflow.
Workaround
No workaround is available for this condition.
Corrective Action
This condition will be addressed in future versions of the device.
Agere Systems Inc.
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