dp83846a National Semiconductor Corporation, dp83846a Datasheet - Page 7

• Manufacturer Part Number: dp83846a
• Description: Dsphyter ? Single 10/100 Ethernet Transceiver
• Manufacturer: National Semiconductor Corporation

1.3 Clock Interface
1.4 Special Connections
1.5 LED Interface
X1
X2
RBIAS
RESERVED
LED_DPLX/PHYAD0
LED_COL/PHYAD1
LED_GDLNK/PHYAD2
LED_TX/PHYAD3
LED_RX/PHYAD4
LED_SPEED
Signal Name
Signal Name
Signal Name
I
O
I
S, O
S, O
S, O
S, O
S, O
I/O
O
Type
Type
Type
67
66
3
1, 5, 8, 20,
21, 22, 47,
63, 68, 69,
70, 71, 74,
75, 77, 78,
80
33
32
31
30
29
28
Pin #
Pin #
Pin #
7
REFERENCE CLOCK INPUT 25 MHz: This pin is the pri-
mary clock reference input for the DP83846A and must be
connected to a 25 MHz 0.005% ( 50 ppm) clock source.
The DP83846A supports CMOS-level oscillator sources.
REFERENCE CLOCK OUTPUT 25 MHz: This pin is the
primary clock reference output.
Bias Resistor Connection. A 9.31 k
connected from RBIAS to ANA_GND.
RESERVED: These pins must be left unconnected.
FULL DUPLEX LED STATUS: Indicates Full-Duplex sta-
tus.
COLLISION LED STATUS: Indicates Collision activity in
Half Duplex mode.
GOOD LINK LED STATUS: Indicates Good Link Status for
10BASE-T and 100BASE-TX.
TRANSMIT LED STATUS: Indicates transmit activity. LED
is on for activity, off for no activity.
RECEIVE LED STATUS: Indicates receive activity. LED is
on for activity, off for no activity.
SPEED LED STATUS: Indicates link speed; high for 100
Mb/s, low for 10 Mb/s.
Description
Description
Description
resistor should be
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