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零件编号 | WD8250 | ||
描述 | Registers and Interrupt Control Functions | ||
制造商 | Western Digital | ||
LOGO | |||
1 Page
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TABLE2. SUMMARY OF WD8250 ACCESSIBLE REGISTERS
,)FA\.
2
~~gl~'~r AddntU
.,Jl3,h
ODlAB 1
,lnterH/tH
Ideriti'i- - Line
!~i~, catioo;," ,Control.,
< ~;~Jt~~~~~t'Regíster '1 'Registei,
Ré~igté,lg:'IA~~tér:'\:l'\,l=Ieg!~te;'}:
'. 1, ';*
O I DataBit O' IDetaBltO.
Word "
"O'~iV:" Length;, ,
Interrupt
Select'
ii:~iPending
Bit O
jf~~ff4: I ,;(WLSO)
!~~~~;
Data Bitl
Data Bit 1
,""
Enable
Trans-
mitter
Holding
Register
Empty,
Interrupt
(ETBEI) ,
Interrupt
ID
Bit (O)
Word
Length
Select
Bit I
(WLS 1)
c'
Enable
Receiver
2' Data Bit 2 OataBl12,-
v,",
line
Status
Interrupt
(ELS!)
.Enable
MODEM
3 Data BII 3 Data Blt;3 Status
Interrupt
(EOSSI)
Interrupt
ID
Bit (1) ,
N'Jmber
of Stop
i Bits
(STB)
Out I
B!Parity
O Enable
(PEN) I
b
it4
Parity
Error,~
(PE)
"
Trailing
Edge fb,ng
I
Indica,tor,
(TERI) ,
4 Data 81!4
I
Even
o
O
Parity
Select
I LODP
-(EPS)
5 Data Bit S Data 81t 5
O
Trans-
mitter
Data
Io
Stlck I
Parity
O
> HoldIng
Register
ReSaedt y
E~pty
(OSR) .
(THRE)
Bit 5
'.
6 Data Bit 6 Data Bit 6
o
7 Data 81t 7 Data Bit 7
::.
o
Trans.
mitter
o Set Break
O
Shltt
Register
Empty
Ring
Indlcator
(RI)
Bit 6
(TSRE)
'"
DIVIsor
o
Latch
Access
o
o
','
c!
/
Bit
(DLAB)
'8,t O IS the least Significant bit It IS the first bit senally transmitted or
~6 bi~
~'
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r, 'f,O,': p \l,l,L'
e.,Y~ I'U;L
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OO'::ot.<t\)';,,;'í\
IM-- ~';)
IU"i}
'D L t)1) t.-tl-= 1 ' ,
..
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页数 | 2 页 | ||
下载 | [ WD8250.PDF 数据手册 ] |
零件编号 | 描述 | 制造商 |
WD8250 | Registers and Interrupt Control Functions | Western Digital |
WD8250 | ACE | Western Digital |
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