mt90528ag2 Zarlink Semiconductor, mt90528ag2 Datasheet - Page 18

• Manufacturer Part Number: mt90528ag2
• Description: 28-port Primary Rate Circuit Emulation Aal1 Sar
• Manufacturer: Zarlink Semiconductor

2.10.1.7
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2.10.1.8
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2.11
The MT90528 provides a number of statistics to allow monitoring of the MT90528. These statistics generally
parallel the operation of some of the service request source bits.
2.11.1
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2.11.2
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2.11.3
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2.11.4
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Data RX_SAR Cell Arrival Indicator
Data RX_SAR Non-CBR Data Cell Buffer Overrun Alarm
Data RX_SAR Buffer Half Full Indicator
Data Cell Counter Rollover
Per-port Cut VC Alarm
Per-port Late Cell Arrival Alarm
Per-port Simple Underrun Channel Indicator - status field indicates which channel of the TDM port last
experienced a simple underrun (SDT mode only).
Per-port Permanent Underrun Channel Indicator - status field indicates whether or not a particular channel of
the TDM port has experienced a permanent underrun (SDT mode only).
UTOPIA Incoming Cell Counter
Incoming Parity Mismatch Counter
Per-VC Transmitted Cell Counter
Within each VC’s UDT Reassembly Control Structure, there is a bit (V = VC Arrival) which is set each time
that a cell arrives on the VC. CPU monitoring of this bit can be used to provide per-VC timeout monitoring.
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In addition to the counters themselves, if one of the following per-VC counters rolls over and the
corresponding service enable bit for the counter is set, a status field indicates the number of the TDM port
associated with the last UDT Reassembly Control Structure to generate a serviceable event.
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As well, there is a late VC status bit and a cut VC status bit for each port (and therefore VC). These bits
are set when user-programmable timeout periods are passed without cells arriving on the VCs in
question.
Per-VC Reassembled Cell Counter
Per-VC AAL1-byte Header Error Counter
Per-VC AAL1-byte Sequence Error Counter
Per-VC Lost Cell Counter
Per-VC Misinserted Cell Counter
Per-VC Write Underrun Counter
Statistics
TDM Module
UTOPIA Module
TX_SAR Module
UDT RX_SAR Module
Data RX_SAR Module
UDT Reassembly-Side Timeout Module
Zarlink Semiconductor Inc.
MT90528
18
Data Sheet