DP83847ALQA56AX/HALF National Semiconductor, DP83847ALQA56AX/HALF Datasheet - Page 7

• Manufacturer Part Number: DP83847ALQA56AX/HALF
• Manufacturer: National Semiconductor

Specifications of DP83847ALQA56AX/HALF

• Lead Free Status / RoHS Status: Compliant

1.3 Clock Interface
1.4 Special Connections
1.5 LED Interface
X1
X2
RBIAS
C1
RESERVED
LED_DPLX/PHYAD0
LED_COL/PHYAD1
LED_GDLNK/PHYAD2
LED_TX/PHYAD3
LED_RX/PHYAD4
LED_SPEED
Signal Name
Signal Name
Signal Name
Type
Type
Type
S, O
S, O
S, O
S, O
S, O
I/O
O
O
O
I
I
1, 2, 4, 5, 8,
34, 44, 47,
50, 51, 52,
53, 54, 55,
LLP Pin #
LLP Pin #
LLP Pin #
9, 12, 13,
49
48
42
61
23
22
21
20
19
18
3
REFERENCE CLOCK INPUT 25 MHz: This pin is the primary
clock reference input for the DP83847 and must be connected to
a 25 MHz 0.005% ( 50 ppm) clock source. The DP83847 sup-
ports CMOS-level oscillator sources.
REFERENCE CLOCK OUTPUT 25 MHz: This pin is the primary
clock reference output.
Bias Resistor Connection. A 10.0 k
nected from RBIAS to GND.
Reference Bypass Regulator. Parallel caps, 10 F (Tantalum pre-
ferred) and .1 F, should be placed close to C1 and connected to
GND. See Section 3.8 for proper placement.
RESERVED: These pins must be left unconnected
FULL DUPLEX LED STATUS: Indicates Full-Duplex status.
COLLISION LED STATUS: Indicates Collision activity in Half Du-
plex 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.
7
Description
Description
Description
resistor should be con-
www.national.com