High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
BITS
DESCRIPTION
TYPE
DEFAULT
12
11
Reserved
RO
-
TX Data FIFO Underrun Interrupt (TDFU). Generated when the TX data
R/WC
0
FIFO underruns.
10
9
TX Data FIFO Overrun Interrupt (TDFO). Generated when the TX data
R/WC
R/WC
R/WC
R/WC
R/WC
R/WC
R/WC
R/WC
R/WC
0
0
FIFO is full, and another write is attempted.
TX Data FIFO Available Interrupt (TDFA). Generated when the TX data
FIFO available space is greater than the programmed level.
8
TX Status FIFO Full Interrupt (TSFF). Generated when the TX Status
0
FIFO is full.
7
TX Status FIFO Level Interrupt (TSFL). Generated when the TX Status
0
FIFO reaches the programmed level.
6
RX Dropped Frame Interrupt (RXDF_INT). This interrupt is issued
0
whenever a receive frame is dropped.
5
RX Data FIFO Level Interrupt (RDFL). Generated when the RX FIFO
0
reaches the programmed level.
4
RX Status FIFO Full Interrupt (RSFF). Generated when the RX Status
0
FIFO is full.
3
RX Status FIFO Level Interrupt (RSFL). Generated when the RX Status
0
FIFO reaches the programmed level.
2-0
GPIO [2:0] (GPIOx_INT). Interrupts are generated from the GPIO’s.
000
These interrupts are configured through the GPIO_CFG register.
5.3.4
INT_EN—Interrupt Enable Register
Offset:
5Ch
Size:
32 bits
This register contains the interrupt masks for IRQ. Writing 1 to any of the bits enables the
corresponding interrupt as a source for IRQ. Bits in the INT_STS register will still reflect the status of
the interrupt source regardless of whether the source is enabled as an interrupt in this register.
BITS
31
DESCRIPTION
TYPE
R/W
DEFAULT
Software Interrupt (SW_INT_EN)
Reserved
0
-
30:26
25
RO
R/W
R/W
R/W
TX Stopped Interrupt Enable (TXSTOP_INT_EN)
RX Stopped Interrupt Enable (RXSTOP_INT_EN)
0
0
0
24
23
RX Dropped Frame Counter Halfway Interrupt Enable
(RXDFH_INT_EN).
22
21
20
19
Reserved
RO
R/W
R/W
R/W
0
0
0
0
TX IOC Interrupt Enable (TIOC_INT_EN)
RX DMA Interrupt (RXD_INT).
GP Timer (GPT_INT_EN)
Revision 1.1 (05-17-05)
SMSC LAN9117
DATA7S6HEET
SMSC [ SMSC CORPORATION ]
