參數(shù)資料
型號: 91C94
廠商: SMSC Corporation
英文描述: ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM
中文描述: 的ISA / PCMCIA的單芯片以太網(wǎng)控制器與RAM
文件頁數(shù): 99/120頁
文件大小: 447K
代理商: 91C94
8
ISA vs. PCMCIA PIN GROUPS
FUNCTION
ISA
PCMCIA
AUI interface
RECP
RECN
COLP
COLN
TXP/nCOLL
TXN/nCRS
RECP
RECN
COLP
COLN
TXP/nCOLL
TXN/nCRS
LEDs
nLNKLED/TXD
nRXLED/RXCLK
nBSELED/RXD
nTXLED/nTXEN
nLNKLED/TXD
nRXLED/RXCLK
nBSELED/RXD
nTXLED/nTXEN
MISC.
RBIAS
PWRDWN/TXCLK
nXENDEC
EN16
ROM
RBIAS
PWRDWN/TXCLK
nXENDEC
EN16
PCMCIA
DESCRIPTION OF PIN FUNCTIONS
PIN NUMBER
QFP
VTQFP/
TQFP
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
95
93
nROM/
nPCMCIA
nROM
I/O4 with
pullup
This pin is sampled at the end of
RESET.
When
sampled
low,
the
LAN91C94 is configured for PCMCIA
operation
and
all
pin
definitions
correspond to the PCMCIA mode. For
ISA operation, this pin is left open and
is used as a ROM chip select output. It
turns active when MEMR* is low and
the address bus contains a valid ROM
address. In ISA mode the LAN91C94
is pin compatible with the LAN91C92
28-30
32-38
26-28
30-36
Address
A0-9
I
Input - Input address lines 0 through 9
39
37
A10/nFWE
I
O4
ISA - Input - Input address line 10
PCMCIA - Output - Flash Memory
Write Enable used for programming
attribute memory. Is active (low) when
nWE=0 and COR2=1
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