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參數(shù)資料
| 型號： | LAN83C175 |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Ethernet CARDBUS Integrated Controller With Modem Support |
| 中文描述： | 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP208 |
| 封裝： | 28 X 28 MM, 1.40 MM HEIGHT, TQFP-208 |
| 文件頁數(shù)： | 39/92頁 |
| 文件大?。?/td> | 299K |
| 代理商： | LAN83C175 |
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39
24 - DPE: CardBus data parity error - set
when a data parity error occurs on the
CardBus bus while EPIC/C is bus master.
This interrupt will only be set when the Parity
Error
Response
bit
configuration space is set.
in
the
CardBus
23 - RSV: Receive status valid (read only -
does not generate an interrupt) - indicates that
the PRSTAT register contains valid status for
the frame currently being processed.
22 - RCTS: Receive copy threshold status
(read only - does not generate an interrupt) -
indicates that the copy in progress that has
passed the early receive copy threshold. This
bit returns zero when there is no receive copy
currently in progress or when the current copy
has not passed the threshold.
21 - RBE: Receive buffers empty (read only -
does not generate an interrupt) - indicates that
there is no data ready for copy in the receive
buffer.
20 - TCIP: Transmit copy in progress (read
only - does not generate an interrupt) -
indicates that a transmit DMA copy is partially
completed. The bit is set each time the
receive DMA begins to copy a frame. The bit is
reset after the copy completes and the status
is posted.
19 - RCIP: Receive copy in progress (read
only - does not generate an interrupt) -
indicates that receive DMA copy is partially
completed. The bit is set each time the
receive DMA begins to copy a frame. The bit
is reset after the copy completes and the
status is posted.
18 - TXIDLE: Transmit idle (read only - does not
generate an interrupt) - indicates that the NIC
transmitter and CardBus transmit DMA have
returned their reset states.
17 - RXIDLE: Receive idle (read only - does not
generate an interrupt) - indicates that the NIC
receiver and CardBus receive DMA have returned
their reset states.
16 - INT_ACTV: Interrupt active (read only - does
not generate an interrupt) - indicates that an
interrupt which is not masked is currently set.
This allows the host to read the interrupt status
through a register, even when interrupts are
disabled.
15 - GP2_INT: This interrupt becomes active
when the pin GPIO2) goes low. It is typically
used by the phy to indicate an event.
14-13 - Unused.
12 - FATAL_INT: This signal becomes true if any
fatal error occurs. These are DPE, APE, PMA,
and PTE. Note that these are also reflected in the
interrupt status word (27:24).
11 - RCT: Receive copy threshold crossed - set
when the receive copy in progress crosses the
CardBus receive copy threshold.
10 - PREI: This preemptive interrupt event
indicates that a packet is being received, with the
probability that by the time the host responds to
the interrupt, the packet will have been completely
received, reducing latency.
9 - CNT: Counter overflow - indicates that one of
the error counters is nearing its maximum count.
8 - Transmit underrun - set when an early transmit
underrun occurs. This interrupt is cleared
automatically when the TXUGO bit in the
command register is set. Clearing this interrupt
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