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KS8993M Datasheet(PDF) 12 Page - Micrel Semiconductor

Part No. KS8993M
Description  Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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KS8993M Datasheet(HTML) 12 Page - Micrel Semiconductor

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Micrel, Inc.
KS8993M/ML/MI
April 2005
12
M9999-041205
Pin Number
Pin Name
Type
(1)
Description
45
RXP1
I/O
Physical receive or transmit signal (+ differential)
46
RXM1
I/O
Physical receive or transmit signal (– differential)
47
AGND
Gnd
Analog ground
48
TXP1
I/O
Physical transmit or receive signal (+ differential)
49
TXM1
I/O
Physical transmit or receive signal (– differential)
50
VDDATX
P
3.3V analog VDD
51
VDDARX
P
3.3V analog VDD
52
RXM2
I/O
Physical receive or transmit signal (– differential)
53
RXP2
I/O
Physical receive or transmit signal (+ differential)
54
AGND
Gnd
Analog ground.
55
TXM2
I/O
Physical transmit or receive signal (– differential)
56
TXP2
I/O
Physical transmit or receive signal (+ differential)
57
VDDA
P
1.8 analog VDD
58
AGND
Gnd
Analog ground
59
TEST1
I
Factory test pin - float for normal operation
60
TEST2
Ipu
Factory test pin - float or pull-up for normal operation
61
ISET
O
Set physical transmit output current.
Pull-down this pin with a 3.01K 1% resistor to ground.
62
AGND
Gnd
Analog ground
63
VDDAP
P
1.8V analog VDD for PLL
64
AGND
Gnd
Analog ground.
65
66
X1
X2
I
O
25MHz crystal/oscillator clock connections
Pins (X1, X2) connect to a crystal. If an oscillator is used, X1
connects to a 3.3V tolerant oscillator and X2 is a no connect.
Note: Clock is +/- 50ppm for both crystal and oscillator.
67
RST_N
Ipu
Hardware reset pin (active low)
68
BPEN
Ipd
Half-duplex backpressure
1 = enable
0 = disable
69
SMAC
Ipd
Special Mac-mode
In this mode, the switch will do faster back-offs than normal.
1 = enable
0 = disable
Note:
1. P = Power supply.
Gnd = Ground.
I = Input.
O = Output.
Ipu = Input w/ internal pull-up.
Ipd = Input w/ internal pull-down.


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