dp83901a National Semiconductor Corporation, dp83901a Datasheet - Page 2

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

General Description
The MAC function (NIC) provides simple and efficient pack-
et transmission and reception control by means of unique
dual DMA channels and an internal FIFO Bus arbitration
and memory control logic are integrated to reduce board
cost and area overheads
SNIC used in conjunction with the DP8392 Coaxial Trans-
ceiver Interface (CTI) provides a comprehensive 2 chip solu-
tion for IEEE 802 3 networks and is designed for easy inter-
face to the latest 10BASE-T transceivers
Due to the inherent constraints of CMOS processing isola-
tion is required at the differential signal interfaces for
10BASE5 and 10BASE2 applications Capacitive or induc-
tive isolation may be used
Connection Diagram
(Continued)
See NS Package Number V68A
Order Number DP83901AV
Top View
2
10 0 INTERNAL REGISTERS
11 0 INITIALIZATION PROCEDURE
12 0 LOOPBACK DIAGNOSTICS
13 0 BUS ARBITRATION
14 0 PRELIMINARY ELECTRICAL CHARACTERISTICS
15 0 SWITCHING CHARACTERISTICS
16 0 AC TIMING TEST CONDITIONS
17 0 PHYSICAL DIMENSIONS
1 0 SYSTEM DIAGRAM
2 0 PIN DESCRIPTION
3 0 BLOCK DIAGRAM
4 0 FUNCTIONAL DESCRIPTION
5 0 TRANSMIT RECEIVE PACKET
6 0 DIRECT MEMORY ACCESS CONTROL (DMA)
7 0 PACKET RECEPTION
8 0 PACKET TRANSMISSION
9 0 REMOTE DMA
ENCAPSULATION DECAPSULATION
Table Of Contents
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