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參數(shù)資料
| 型號： | W3100A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | i2Chip W3100A |
| 中文描述： | i2Chip W3100A |
| 文件頁數(shù)： | 6/63頁 |
| 文件大小： | 557K |
| 代理商： | W3100A |
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order to configure the W3100A for Serial MII operation.
34
/FDPLX
I
FULL/HALF DUPLEX SELECT:
This input pin selects Half/Full
Duplex operation.
This pin must be externally pulled low (typically x k
) in order to
configure the W3100A for Full Duplex operation.
0 = Full Duplex
1 = Half Duplex
28, 47, 56
MODE[2–
0]
I
MODE SELECT:
This input pin selects MCU I/F type and operating
mode of W3100A.
Since each pin is positioned as pull-down internally, clock mode –
the default mode – is selected when the connection is not made.
M2
M1
M0
Description
0
0
0
Clocked
mode
Mode where MCU Bus signal is
analyzed by W3100A by using the
clock when MCU Bus I/F is in
use.
0
0
1
External
clocked
mode
Mode where MCU Bus signal is
analyzed by W3100A by using the
external clock when MCU Bus I/F
is in use.
0
1
0
Non-
clocked
mode
I
2
C
mode
Mode where MCU bus signal is
used directly by W3100A when
MCU Bus I/F is in use.
Mode using
I
2
C for
MCU I/F.
0
1
1
1
X
X
Test
mode
Mode used for testing at the plant.
Not to be used by regular users.
Clocked mode, External clocked mode and Non-clocked mode are
used to connect MCU and W3100A when MCU Bus I/F is in use.
Choose an appropriate mode and use it by analyzing the MCU bus
timing. Refer to timing diagram for each mode for more detail.
Table 4: W3100A Power Supply Signal Description
PIN#
Signal
2, 12, 22,
38, 39, 58
I/O
Description
VCC
POSITIVE 3.3V SUPPLY PINS
3, 13, 23,
37, 45, 54,
57
GND
NEGATIVE (GROUND) SUPPLY PINS:
a decoupling capacitor is
recommended to be connected between the Vcc and GND pins
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