XRT79L71_07 Datasheet, PDF (78/109 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE

XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
REV. 1.0.0
TABLE 3: LIST OF ALL OF THE POSSIBLE CONDITIONS THAT CAN GENERATE INTERRUPTS WITHIN THE XRT79L71
FUNCTIONAL BLOCK
INTERRUPT CONDITION
Receive ATM Cell/PPP Packet Proces- Receive ATM Cell Processor Block Interrupts
sor Block
• Receive Cell Extraction Event
• Receive Cell Insertion Event
• Receive Cell Insertion Memory Overflow Condition
• Receive Cell Extraction Memory Overflow Condition
• RxFIFO Overflow
• Detection of Correctable HEC Byte Error
• Detection of Uncorrectable HEC Byte Error
• Declaration of the LCD (Loss of Cell Delineation) Defect Condition
• Clearances of the LCD Defect Condition
Receive PPP Packet Processor Block Interrupts
• Detection of Receive FIFO Overflow Condition
• Detection of FCS (Frame Check Sequence) Error·
• Detection of ABORT Sequence
• Detection of RUNT Packet
Transmit ATM Cell/PPP Packet Proces- Transmit ATM Cell Processor Block Interrupts
sor Block
• Transmit Cell Extraction Event
• Transmit Cell Insertion Event·
• Transmit Cell Insertion Memory Overflow Condition
• Transmit Cell Extraction Memory Overflow Condition
• TxFIFO Overflow
• Detection of HEC Byte Error
• Detection of Transmit UTOPIA Parity Error
• Transmit PPP Processor Block Interrupts
• Detection of Transmit FIFO Overflow Condition·
• Detection of Transmit POS-PHY Interface Parity Error
The XRT79L71 ATM UNI/PPP/Clear-Channel DS3/E3 Framer device comes equipped with the following
registers to support the servicing of this wide array of potential interrupt request sources. Table 4 lists these
registers and their corresponding addresses, within the XRT79L71.
TABLE 4: A LISTING OF THE XRT79L71 ATM UNI/PPP/CLEAR-CHANNEL DS3/E3 FRAMER DEVICE INTERRUPT
BLOCK REGISTERS
REGISTER
ADDRESS LOCATION
Operation Control Register
0x0101
Operation Interrupt Status Register - Byte 1
0x0112
Operation Interrupt Status Register - Byte 0
0x0113
Operation Interrupt Enable Register - Byte 1
0x0116
Operation Interrupt Enable Register - Byte 0
0x0117
Framer Block Interrupt Enable Register
0x1104
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