參數(shù)資料
型號: LAN91C96(100TQFP)
英文描述: LAN Node Controller
中文描述: 網(wǎng)絡節(jié)點控制器
文件頁數(shù): 16/55頁
文件大?。?/td> 482K
代理商: LAN91C96(100TQFP)
FEAST Fast Ethernet Controller
for PCMCIA and Generic 16-Bit Applications
SMSC DS – LAN91C110 REV. B
Page 16
Rev. 09/05/02
TABLE 3 - INTERNAL I/O SPACE MAPPING
BANK0
TCR
EPH STATUS
RCR
COUNTER
MIR
MCR
RESERVED (0)
BANK SELECT
BANK1
CONFIG
BASE
IA0-1
IA2-3
IA4-5
-
CONTROL
BANK SELECT
BANK2
MMU COMMAND
PNR
FIFO PORTS
POINTER
DATA
DATA
INTERRUPT
BANK SELECT
BANK3
MT0-1
MT2-3
MT4-5
MT6-7
MGMT
REVISION
ERCV
BANK SELECT
0
2
4
6
8
A
C
E
A special BANK (BANK7) exists to support the addition of external registers.
BANK SELECT REGISTER
OFFSET
NAME
E
BANK SELECT
REGISTER
TYPE
SYMBOL
BSR
READ/WRITE
HIGH
BYTE
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
LOW
BYTE
BS2
BS1
BS0
X
X
X
X
X
0
0
0
BS2, BS1, BS0 Determine the bank presently in use. This register is always accessible and is used to select the
register bank in use.
The upper byte always reads as 33h and can be used to help determine the I/O location of the LAN91C110.
The BANK SELECT REGISTER is always accessible regardless of the value of BS0-2.
Note:
The bank select register can be accessed as a word at offset 0x0Eh, or as a byte at offset 0x0Fh.
BANK 7 has no internal registers other than the BANK SELECT REGISTER itself. On valid cycles where BANK7 is
selected (BS0=BS1=BS2=1), and A3=0, nCSOUT is activated to facilitate implementation of external registers.
Note:
BANK7 does not exist in LAN91C9x devices. For backward S/W compatibility BANK7 accesses should be
done if the Revision Control register indicates the device is the LAN91C110.
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