參數(shù)資料
型號: MX98905B
廠商: Electronic Theatre Controls, Inc.
英文描述: The MX98905 is designed for easy implementation of CSMA/CD local area networks,
中文描述: 該MX98905是專為易于實現(xiàn)的多址/光盤局域網(wǎng),
文件頁數(shù): 11/86頁
文件大小: 352K
代理商: MX98905B
11
P/N: PM0365
REV. 1.3, NOV 20 ,1995
MX98905B
FUNCTIONAL DESCRIPTION
1. I/O BASES DETERMINATION
The I/O bases are determined by 6 bits in the MX98905.
They are: IOAD2-0 in Configuration A (CA); PAGE and
IOBEN in Hidden Configuration Register (HCFR) and
HCFRE in Hidden Command Register (HCMR). For
details about HCMR and HCFR (Registers provided by
the MX98905 only) see Register Description. User can
directly modify the value of PAGE and IOAD2-0 to change
I/O base or use AUTO configuration feature provided by
the MX98905. See Enhanced mode description for
details about AUTO configuration.
The following are the I/O bases mapping:
TABLE 1. I/O BASES MAPPING
HCMR
HCFRE
HCFR
IOBEN
HCFR
PAGE
CA
IOAD1
IOAD2
IOAD0
I/O BASE
0
1
0
0
0
0
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
300H
Not supported
240H
280H
2C0H
320H
340H
360H
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
300H
Not supported
240H
280H
2C0H
320H
340H
360H
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
300H
Not supported
240H
280H
2C0H
320H
340H
360H
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