dp83901a National Semiconductor Corporation, dp83901a Datasheet - Page 5

• Manufacturer Part Number: dp83901a
• Description: Serial Network Interface Controller
• Manufacturer: National Semiconductor Corporation

POWER SUPPLY PINS
NO CONNECTION
20 33 49
Pin Description
Pin No
3 0 Block Diagram
21 48
53 55
54 66
35 52
1 18
59
64
45
44
58
57
Pin Name
V
GND
V
GND
V
GND
V
GND
NC
CC
CC
CC
CC
I O
(Continued)
DIGITAL POSITIVE 5V SUPPLY PINS
DIGITAL NEGATIVE (GROUND) SUPPLY PINS It is suggested that a decoupling capacitor be
connected between the V
AUI RECEIVE 5V SUPPLY Power pin supplies 5V to the AUI receiver
AUI RECEIVE GROUND Ground pin for AUI receiver
AUI TRANSMIT 5V SUPPLY Power pin supplies 5V to the AUI transmitter
AUI TRANSMIT GROUND Ground pin for AUI transmitter
VCO 5V SUPPLY Care should be taken to reduce noise on this pin as it supplies 5V to the
ENDEC’s Phase Lock Loop
VCO GROUND PIN Care should be taken to reduce noise on this pin as it is the ground to the
ENDEC’s Phase Lock Loop
NO CONNECTION Do not connect to these pins
CC
FIGURE 1
and GND pins
5
Description
TL F 10469 – 3