DP83953VUL National Semiconductor, DP83953VUL Datasheet - Page 2

• Manufacturer Part Number: DP83953VUL
• Description: IC CTRLR RIC REPEATER 160-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83953VUL

• Controller Type: Ethernet Repeater Interface Controller
• Interface: IEEE 802.3
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 870mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-MQFP, 160-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83953VUL

General Description
The RIC2A repeater consists of two major functional
blocks: The segment specific block and the shared func-
tional blocks. The segment specific block incorporates rele-
vant IEEE specifications on a per port basis. The shared
functional blocks incorporate core logic for the entire IEEE
repeater unit. The core logic blocks consist of a repeater
receive multiplexor, a phase locked loop (PLL), a Manches-
ter decoder, an elasticity buffer, a transmit encoder and a
demultiplexor.
A larger repeater system may be constructed by cascading
several RIC2A devices via the Inter-RIC bus. This method
Table of Contents
1.0
2.0
3.0
4.0
Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Summary of DP83953 RIC2A Feature
Enhancements from DP83952 RIC II . . . . . . . . . 12
Overview Of RIC2A Functions . . . . . . . . . . . . . . . 12
Description Of Repeater Operations . . . . . . . . . . 14
Examples Of Packet Repetition
Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Description Of Hardware Connection For Inter-ric
Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Processor and Display Interface . . . . . . . . . . . . . 28
Description Of Hardware Connection For Processor
And Display Interface . . . . . . . . . . . . . . . . . . . . . . 30
(continued)
2
of cascading allows the RIC2A system to function as a sin-
gle repeater unit without introducing additional repeater
hops.
The RIC2A is configurable for specific applications. It pro-
vides port status information for LED array displays and a
simple interface for system processors. The RIC2A pos-
sesses multifunctional counters and status flag arrays to
facilitate network statistics gathering, as well as a serial
Hub Management Interface Bus for collecting, event data in
managed hub applications.
5.0
6.0
7.0
8.0
9.0
10.0
HUB Management Support . . . . . . . . . . . . . . . . . . . . . 35
5.1
5.2
5.3
5.4
Port Block Functions . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1
6.2
6.3
6.4
RIC2A Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Board Layout Recommendations . . . . . . . . . . . . . . . 75
DC and AC Specification . . . . . . . . . . . . . . . . . . . . . . 77
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 90
Event Counting Function . . . . . . . . . . . . . . . . . . 35
Event Record Function . . . . . . . . . . . . . . . . . . . . 36
Management Interface Operation . . . . . . . . . . . . 37
Description of Hardware Connection for
Management Interface . . . . . . . . . . . . . . . . . . . . 43
Transceiver Functions . . . . . . . . . . . . . . . . . . . . 44
Segment Partition . . . . . . . . . . . . . . . . . . . . . . . . 47
Port Status Register Functions . . . . . . . . . . . . . . 47
Local Ports and Expected Activity . . . . . . . . . . . 49
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