64
FIGURE 9 - INTERRUPT STRUCTURE
543210543210
INTERRUPT
STATUS
REGISTER
INTERRUPT
MASK
REGISTER
OE
nOE
nRDIST
16
DATA
BUS
D0-7D8-15
EDGE DETECTOR
ON LINK ERR
LEMASK
CTR-ROL
CRMASK
TEMASK
TXENA
TX_SVC
EPHSR INTERRUPTS
MERGED INTO EPH INT
D2
D4
DSQ
nQ
TX
FIFO EMPTY
nWRACK
DSQ
nQ
RX_OVRN (EPHSR)
ALLOCATION
FAILED
TX COMPLETION FIFO
NOT EMPTY
RCV FIFO
NOT EMPTY
RCV INT
TX INT
TX
EMPTY
INT
ALLOC
INT
RX_OVRN
INT
EPH INT
INT
MAIN INTERRUPTS