參數(shù)資料
型號: 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): 31/101頁
文件大?。?/td> 312K
代理商: LAN91C100
31
I/O SPACE - BANK1
OFFSET
2
NAME
BASE ADDRESS REGISTER
TYPE
READ/WRITE
SYMBOL
BAR
This register holds the I/O address decode option chosen for the LAN91C100. It is part of the
EEPROM saved setup, and is not usually modified during run-time.
HIGH
BYTE
A15
A14
A13
A9
A8
A7
A6
A5
0
0
0
1
1
0
0
0
LOW
BYTE
RESERVED
0
0
0
0
0
0
0
X
A15-A13 and A9-A5 These bits are compared
against the I/O address on the bus to determine
the IOBASE for the LAN91C100's registers. The
64k I/O space is fully decoded by the
LAN91C100 down to a 16 location space,
therefore, the unspecified address lines A4, A10,
A11 and A12 must be all zeros.
All bits in this register are loaded from the serial
EEPROM. The I/O base decode defaults to
300h (namely, the high byte defaults to 18h).
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