參數(shù)資料
型號(hào): LAN91C100
廠商: SMSC Corporation
英文描述: FEAST⑩ Fast Ethernet Controller
中文描述: 宴⑩快速以太網(wǎng)控制器
文件頁數(shù): 42/101頁
文件大小: 312K
代理商: LAN91C100
42
I/O SPACE - BANK2
OFFSET
C
NAME
INTERRUPT STATUS REGISTER
TYPE
READ ONLY
SYMBOL
IST
ERCV INT
EPH INT
RX_OVRN
INT
ALLOC
INT
TX
EMPTY
INT
TX INT
RCV INT
X
0
0
0
0
1
0
0
OFFSET
C
NAME
INTERRUPT ACKNOWLEDGE
REGISTER
TYPE
WRITE ONLY
SYMBOL
ACK
ERCV INT
RX_OVRN
INT
TX
EMPTY
INT
TX INT
OFFSET
D
NAME
INTERRUPT MASK REGISTER
TYPE
READ/WRITE
SYMBOL
MSK
ERCV INT
EPH INT
RX_OVRN
INT
ALLOC
INT
TX
EMPTY
INT
TX INT
RCV INT
X
0
0
0
0
0
0
0
This register can be read and written as a word
or as two individual bytes.
The Interrupt Mask Register bits enable the
appropriate bits when high and disable them
when low. An enabled bit being set will cause a
hardware interrupt.
ERCV INT Early receive interrupt. Set
whenever a receive packet is being received,
and the number of bytes received into memory
exceeds the value programmed as ERCV
THRESHOLD (Bank 3, Offset Ch). ERCV INT
stays set until acknowledged by writing the
INTERRUPT ACKNOWLEDGE REGISTER with
the ERCV INT bit set.
EPH INT Set when the Ethernet Protocol
Handler section indicates one out of various
possible special conditions. This bit merges
exception type of interrupt sources, whose
service time is not critical to the execution speed
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