cx28365 Mindspeed Technologies, cx28365 Datasheet - Page 102

• Manufacturer Part Number: cx28365
• Description: X12, X6, X4 T3/e3 Framer And Atm Cell Transmission Convergence Sublayer Processor
• Manufacturer: Mindspeed Technologies

Functional Description
2-64
The CX2836x uses four levels of interrupt indications as illustrated in
The first level consists of interrupts from the 12 ports plus the one-second interrupt as
indicated in the Global Interrupt Status registers [GLOBINTL and GLOBINTH]. The
second level indicates interrupts pending in the framer, cell delineator, or external
framer of the interrupting port.
If there are interrupts pending in the cell delineator, the third level consists of receive,
transmit or PLCP interrupt indications, which correspond to specific events on a
specific port. Finally the fourth level indicates the interrupting source in the PLCP,
TXCELLINT, and RXCELLINT area respectively.
If there are interrupts pending in the framer area, the Interrupt Status register (SR01
addr; 0x41) which represents the third level of interrupt indication, identifies the
reason for the interrupt assertion. The six possible sources of interrupt are from
TxDLFEACItr, RxDLltr, RxFEACltrS, AlarmEndItr, AlarmStrtItr, and Ctrltr. Finally,
the fourth level indicates the interrupting source in SR02, SR03, SR04, SR08, SR11,
and SR17, respectively.
Preliminary Information/Mindspeed Proprietary and Confidential
Mindspeed Technologies™
CX28365/6/4 Data Sheet
Figure
2-19.
500028C