MT90500 Mitel Semiconductor, MT90500 Datasheet - Page 18

• Manufacturer Part Number: MT90500
• Description: Multi-Channel ATM AAL1 SAR
• Manufacturer: Mitel Semiconductor

MT90500
2.8.6
2.9
The MT90500 provides a number of statistics to allow monitoring of the MT90500. These statistics generally
parallel the operation of some of the interrupt source bits. The counters (except the Timing Recovery counters)
also set rollover interrupt source bits when they reach their terminal counts and return to zero.
2.9.1
2.9.2
2.9.3
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Statistics
Timing Module Interrupts
RX_SAR Statistics
TDM Statistics
Timing Recovery Statistics
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TDM Read Underrun Error Interrupt
TDM Read Underrun Counter Rollover Interrupt
8 kHz Reference Failure Interrupt
SRTS TX Underrun Interrupt
SRTS TX Overrun Interrupt
SRTS RX Underrun Interrupt
SRTS RX Overrun Interrupt
Adaptive Clock Loss of Timing Reference Cell Interrupt
Adaptive Clock Loss of Synchronization Interrupt
Miscellaneous Event Counter: This 16-bit register’s value is incremented each time a (mask-
selected) miscellaneous error occurs.
Miscellaneous Event ID Register: The address of the RX Control Structure that caused the last
miscellaneous error.
Underrun Count: This 16-bit register’s value is incremented each time a CBR Receive Underrun
occurs.
Underrun ID Number: The address of the RX Control Structure that caused the last underrun
error.
Overrun Count: This 16-bit register is incremented each time a CBR Receive Overrun occurs.
Overrun ID Number: The address of the RX Control Structure that caused the last overrun error.
TDM Read Underrun Time Slot Stream. Contains the time slot and stream on which the last TDM
read underrun was detected.
TDM Read Underrun Counter. Each time a TDM read underrun occurs, this register’s value is
incremented.
Event Counter: Counts the reception of timing reference cells or 8 kHz markers.
CLKx1 Counter: 24-bit counter which keeps a running count of TDM byte-periods.
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AAL1-byte Parity Error
AAL1-byte CRC Error
AAL1 Sequence Number Error
Pointer-byte Parity Error
Pointer-byte Out of Range Error