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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(yè)數(shù)： | 21/101頁(yè) |
| 文件大?。?/td> | 312K |
| 代理商： | LAN91C100 |
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21
I/O SPACE
The base I/O space is determined by the IOS0-2
inputs and the EEPROM contents. To limit the
I/O space requirements to 16 locations, the
registers are assigned to different banks. The
last word of the I/O area is shared by all banks
and can be used to change the bank in use.
Registers are described using the following
convention:
OFFSET NAME TYPE SYMBOL
HIGH
BYTE
bit 15
bit14
bit 13
bit 12
bit 11
bit 10
bit9
bit8
X
X
X
X
X
X
X
X
LOW
BYTE
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
X
X
X
X
X
X
X
X
OFFSET Defines the address offset within the
IOBASE where the register can be accessed at,
provided the bank select has the appropriate
value.
The offset specifies the address of the even byte
(bits 0-7) or the address of the complete word.
The odd byte can be accessed using address
(offset + 1).
Some registers (like the Interrupt Ack., or like
Interrupt Mask) are functionally described as
two eight bit registers, in that case the offset of
each one is independently specified.
Regardless of the functional description, all
registers can be accessed as doublewords,
words or bytes.
The default bit values upon hard reset are
highlighted
below each register.
Table 2 - Internal I/O Space Mapping
BANK1
BANK0
BANK2
BANK3
0
TCR
CONFIG
MMU COMMAND
MT0-1
2
EPH STATUS
BASE
PNR/ARR
MT2-3
4
RCR
IA0-1
FIFO PORTS
MT4-5
6
COUNTER
IA2-3
POINTER
MT6-7
8
MIR
IA4-5
DATA
MGMT
A
MCR
GENERAL
PURPOSE
DATA
REVISION
C
RESERVED (0)
CONTROL
INTERRUPT
ERCV
E
BANK SELECT
BANK SELECT
BANK SELECT
BANK SELECT
A special BANK (BANK7) exists to support the addition of external registers.
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| LAN91C110 | FEAST FAST ETHERNET CONTROLLER FOR PCMCIA AND GENERIC 16-BIT APPLICATIONS |
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相關(guān)代理商/技術(shù)參數(shù) |
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| LAN91C100FD | 制造商:- 功能描述: 制造商:SMSC 功能描述: |
| LAN91C100-FD | 制造商:SMSC 制造商全稱:SMSC 功能描述:FEAST Fast Ethernet Controller with Full Duplex Capability |
| LAN91C100FD(208PQFP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller |
| LAN91C100FD(208TQFP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller |
| LAN91C100FD_06 | 制造商:SMSC 制造商全稱:SMSC 功能描述:FEAST Fast Ethernet Controller with Full Duplex Capability |
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