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PRELIMINARY
DS3 UNI FOR ATM
XRT7245
REV. 1.03
XIII
Tx DS3 Configuration Register (Address = 16h) ...................................................................................... 201
UNI Operating Mode Register: Address = 00h .......................................................................................... 204
UNI I/O Control Register (Address = 01h) ................................................................................................. 208
UNI I/O Control Register (Address = 01h) ................................................................................................. 209
UNI I/O Control Register (Address = 01h) ................................................................................................. 210
UNI Interrupt Status Register (Address = 05h) ......................................................................................... 211
Tx DS3 FEAC Configuration and Status Register .................................................................................... 212
Tx DS3 FEAC Configuration and Status Register (Address = 1Ch) ........................................................ 212
Bit 3—Tx FEAC Interrupt Status ................................................................................................................ 212
Bit 4—Tx FEAC Interrupt Enable ................................................................................................................ 212
Tx DS3 LAPD Status/Interrupt Register ........................................................................................................ 212
Tx DS3 LAPD Status/Interrupt Register (Address = 1Fh) ........................................................................ 212
Bit-0—TxLAPD Interrupt Status ................................................................................................................. 212
Bit-1—TxLAPD Interrupt Enable ................................................................................................................ 212
7.0 THE RECEIVE SECTION .........................................................................................214
Receive DS3 Framer .......................................................................................................214
UNI I/O Control Register (Address = 01h) ................................................................................................. 217
UNI I/O Control Register (Address = 01h) ................................................................................................. 220
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 223
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 223
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 224
The “Framing on Parity” Option ................................................................................................................ 224
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 224
UNI I/O Control Register (Address = 01h) ................................................................................................. 225
Address = 22h, PMON Framing Bit Error Event Count Register—MSB ................................................. 225
Address = 23h, PMON Framing Bit Error Event Count Register—LSB .................................................. 225
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 225
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 226
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 226
Rx DS3 Configuration and Status Register, (Address = 0Eh) ................................................................. 227
Address = 0Fh, Rx DS3 Status Register .................................................................................................... 227
Rx DS3 Interrupt Status Register (Address = 11h) ................................................................................... 228
Address = 24h, PMON Parity Error Event Count Register—MSB ........................................................... 228
Address = 25h, PMON Parity Error Event Count Register—LSB ............................................................ 228
Operation of the Receive DS3 FEAC Processor ....................................................................................... 229
FEAC Code Validation ................................................................................................................................. 229
Rx DS3 FEAC Interrupt Enable/Status Register (Address = 13h) ........................................................... 229
Rx DS3 FEAC Register (Address = 12h) .................................................................................................... 230
FEAC Code Removal ................................................................................................................................... 230
Rx DS3 FEAC Interrupt Enable/Status Register (Address = 13h) ........................................................... 230
Operation of the LAPD Receiver ................................................................................................................ 232
Rx DS3 LAPD Control Register (Address = 14h) ...................................................................................... 232
Rx DS3 LAPD Status Register (Address = 15h) ........................................................................................ 232