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DP83950BVQB Datasheet

  • DP83950BVQB

  • RIC⑩ Repeater Interface Controller

  • 80頁

  • NSC

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DP83950B RIC Repeater Interface Controller
October 1995
DP83950B RIC
TM
Repeater Interface Controller
General Description
The DP83950B Repeater Interface Controller 鈥樷€楻IC鈥欌€?may be
used to implement an IEEE 802 3 multiport repeater unit It
fully satisfies the IEEE 802 3 repeater specification including
the functions defined by the repeater segment partition and
jabber lockup protection state machines
The RIC has an on-chip phase-locked-loop (PLL) for Man-
chester data decoding a Manchester encoder and an Elas-
ticity Buffer for preamble regeneration
Each RIC can connect to 13 cable segments via its network
interface ports One port is fully AUI compatible and is able
to connect to an external MAU using the maximum length of
AUI cable The other 12 ports have integrated 10BASE-T
transceivers These transceiver functions may be bypassed
so that the RIC may be used with external transceivers for
example DP8392 coaxial transceivers In addition large re-
peater units containing several hundred ports may be con-
structed by cascading RICs together over an Inter-RIC bus
The RIC is configurable for specific applications It provides
port status information for LED array displays and a simple
interface for system processors The RIC posseses multi-
function counter and status flag arrays to facilitate network
statistics gathering A serial interface known as the Man-
agement Interface is available for the collection of data in
Managed Hub applications
Y
Y
Y
Y
Y
Y
Y
Y
Separate partition state machines for each port
Provides port status information for LED displays in-
cluding receive collision partition and link status
Power-up configuration options
Repeater and Partition Specifications Transceiver Inter-
face Status Display Processor Operations
Simple processor interface for repeater management
and port disable
On-chip Event Counters and Event Flag Arrays
Serial Management Interface to combine packet and
repeater status information together
CMOS process for low power dissipation
Single 5V supply
Table of Contents
1 0 SYSTEM DIAGRAM
2 0 CONNECTION DIAGRAM
3 0 PIN DESCRIPTIONS
4 0 BLOCK DIAGRAM
5 0 FUNCTIONAL DESCRIPTION
6 0 HUB MANAGEMENT SUPPORT
7 0 PORT LOGIC FUNCTIONS
8 0 RIC REGISTER DESCRIPTIONS
9 0 AC AND DC SPECIFICATIONS
10 0 AC TIMING TEST CONDITIONS
11 0 PHYSICAL DIMENSIONS
Features
Y
Y
Y
Y
Y
Y
Compliant with the IEEE 802 3 Repeater Specification
13 network connections (ports) per chip
Selectable on-chip twisted-pair transceivers
Cascadable for large hub applications
Compatible with AUI compliant transceivers
On-chip Elasticity Buffer Manchester encoder and de-
coder
1 0 System Diagram
Simple RIC Hub
TL F 11096 鈥?1
TRI-STATE is a registered trademark of National Semiconductor Corporation
RIC
TM
and SONIC
TM
are trademarks of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 11096
RRD-B30M16 Printed in U S A

DP83950BVQB 產(chǎn)品屬性

  • 24

  • 集成電路 (IC)

  • 接口 - 控制器

  • -

  • 以太網(wǎng)轉(zhuǎn)發(fā)器接口控制器

  • IEEE 802.3

  • 4.75 V ~ 5.25 V

  • 380mA

  • 0°C ~ 70°C

  • 表面貼裝

  • 160-BFQFP

  • 160-PQFP（28x28）

  • 托盤

  • *DP83950BVQB

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