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參數(shù)資料
型號(hào)： W3100A
廠(chǎng)商： Electronic Theatre Controls, Inc.
英文描述： i2Chip W3100A
中文描述： i2Chip W3100A
文件頁(yè)數(shù)： 43/63頁(yè)
文件大小： 557K
代理商： W3100A
4. I
2
C I/F Mode.
I
2
C I/F uses SDA, SCL to provide serial data transmission and reception in I
2
C mode between MCU and
W3100A.
As a clock line, SCL needs to be provided by MCU, and SDA is used as the line to transfer data and address
between MCU and W3100A.
A simple block diagram as shown above illustrates the connection between MCU and W3100A using I
2
C.
As illustrated above, it is recommended to set the device address for I
2
C by using A[14:8], provide a pull-up
of 4.7
k
for
SCL and SDA lines externally, and then ground the remaining address A[7:0].
/INT
SDA
MCU
SCL
/INT
SCL
SDA
RXC
CRS
RXD[3:0]
TXC
MII
/LINK
Ethernet
PHY
TXE
TXD[3:0]
COL
/LINK
/FDPLX
CLOCK
RX_CLK
RXDV/CRS
RXD[3:0]
TX_CLK
TXD[3:0]
COL
TXE
Trans-
former
TX
±
RX
±
RJ-45
/FDPLX
CLOCK
A[7:0]
A[14:8]
I
2
C Device
address set-up
VCC
VCC
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