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KS8993 Datasheet(PDF) 6 Page - Micrel Semiconductor

Part No. KS8993
Description  3-Port 10/100 Integrated Switch with PHY and Frame Buffer
Download  35 Pages
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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KS8993 Datasheet(HTML) 6 Page - Micrel Semiconductor

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KS8993
Micrel
KS8993
6
May 2005
Pin Description
Pin Number
Pin Name
Type(Note 1)
Port
Pin Function
1
GND_ANA
GND
Analog ground
2
MUX[2]
I
Factory test pin
3
MUX[1]
I
Factory test pin
4
GND_RX[1]
GND
1
Ground for receiver
5
RXP[1]
I
1
Physical receive signal + (differential)
6
RXM[1]
I
1
Physical receive signal - (differential)
7
VDD_RX[1]
Pwr
1
2.5V for receiver
8
VREF[1]
O
1
Reference voltage for transmit transformer center tap
9
TXP[1]
O
1
Physical transmit signal + (differential)
10
TXM[1]
O
1
Physical transmit signal - (differential)
11
GND_TX[1]
GND
1
Ground for transmit circuitry
12
VDD_TX[1]
Pwr
1
2.5V for transmit circuitry
13
VDD_BG
Pwr
2.5V for analog circuitry
14
ISET
O
Set physical transmit output current
15
GND_BG
GND
Ground for analog circuitry
16
GND_PLL
GND
Ground for phase locked loop circuitry
17
VDD_PLL
Pwr
2.5V for phase locked loop circuitry
18
GND_RX[2]
GND
2
Ground for receiver
19
RXP[2]
I
2
Physical receive signal + (differential)
20
RXM[2]
I
2
Physical receive signal - (differential)
21
VDD_RX[2]
Pwr
2
2.5V for receiver
22
VREF[2]
O
2
Reference voltage for transmit transformer center tap
23
TXP[2]
O
2
Physical transmit signal + (differential)
24
TXM[2]
O
2
Physical transmit signal - (differential)
25
GND_TX[2]
GND
2
Ground for transmit circuitry
26
VDD_TX[2]
Pwr
2
2.5V for transmit circuitry
27
VDD_TX[3]
Pwr
3
2.5V for transmit circuitry
28
GND_TX[3]
GND
3
Ground for transmit circuitry
29
TXP[3]
O
3
Physical transmit signal + (differential)
30
TXM[3]
O
3
Physical transmit signal - (differential)
31
VREF[3]
O
3
Reference voltage for transmit transformer center tap
32
VDD_RX[3]
Pwr
3
2.5V for receiver
33
RXP[3]
I
3
Physical receive signal + (differential)
34
RXM[3]
I
3
Physical receive signal - (differential)
35
GND_RX[3]
GND
3
Ground for receiver
36
FXSD[2]
I
2
Fiber signal detect
37
FXSD[3]
I
3
Fiber signal detect
38
GND_ANA
GND
Analog ground
Note 1.
Pwr = power supply
GND = ground
I = input
O = output
I/O = bi-directional


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