Mounting Type: Surface Mount
Series: -
Operating Temperature: 0°C ~ 70°C
Packaging: Tray
Manufacturer: National Semiconductor
Voltage - Supply: 4.75 V ~ 5.25 V
Interface: IEEE 802.3
Supplier Device Package: 160-PQFP (28x28)
Package / Case: 160-BFQFP
Controller Type: Ethernet Repeater Interface Controller
Current - Supply: 380mA
DescriptionThe DP83950BVQB is one member of the DP83950B series.The DP83950B Repeater Interface Controller"RIC"may be used to implement an IEEE 8023 multiport repeater unit.It fully satisfies the IEEE 8023 repeater specification including the functions defined by the repeater segment partition and jabber lockup protection state machines.
Features of the DP83950B are:(1)compliant with the IEEE 8023 repeater specification;(2)on-chip elasticity buffer manchester encoder and decoder;(3)provides port status information for LED displays in cluding receive collision partition and link status;(4)simple processor interface for repeater management and port disable;(5)serial Management Interface to combine packet and repeater status information together.The DP83950BVQB is configurable for specific applications.It provides port status information for LED array displays and a simple interface for system processors.The DP83950BVQB posseses multi-function counter and status flag arrays to facilitate network statistics gathering.A serial interface known as the management interface is available for the collection of data in managed hub applications.
The absolute maximum ratings of the DP83950B can be summarized as:(1)supply voltage(Vcc):0.5V to 7.0V;(2)DC input voltage(VIN):-0.5V to Vcc+0.5V;(3)DC output voltage(Vout):-0.5 V to Vcc+0.5V;(4)storage temperature range(Tstg):-65 to +150°C.Using the RIC in a repeater system allows the design to be constructed with many more network attachments than can be supported by a single chip.The split of functions already described allows data packets and collision status to be transferred between multiple RICs and at the same time the multiple RICs still behave as a single logical repeater.Since all DP83950BVQBs in a repeater system are identical and capable of performing any of the repetition operations the failure of one DP83950BVQB will not cause the failure of the entire system.This is an important issue in large multiport repeaters RICs communicate via a specialized interface known as the Inter-RIC bus.This allows the data packet to be transferred from the receiving DP83950BVQB to the other RICs in the system.These RICs then transmit the data stream to their segments Just as important as data transfer is the notification of collisions occurring across the network The Inter-RIC bus has a set of status lines capable of conveying collision information between RICs to ensure their main state machines operate in the appropriate manner.
Parameters: | Technical/Catalog Information | DP83950BVQB |
| Vendor | National Semiconductor |
| Category | Integrated Circuits (ICs) |
| Controller Type | Ethernet Repeater Interface Controller |
| Interface | IEEE 802.3 |
| Voltage - Supply | 4.75 V ~ 5.25 V |
| Current - Supply | 380mA |
| Package / Case | 160-PQFP |
| Packaging | - |
| Operating Temperature | 0°C ~ 70°C |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | DP83950BVQB
DP83950BVQB
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DP83950BVQB Data Sheet
