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Mitel NWK954, Руководство пользователя

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NWK954

2

QUAD RJ45

QUAD

MAGNETICS

NWK954

QUAD

MAGNETICS

NWK954

QUAD

MAGNETICS

NWK954

QUAD

MAGNETICS

NWK954

QUAD

MAGNETICS

NWK954

QUAD

MAGNETICS

NWK954

CLOCK DRIVERS

OSCILLATOR

BACKPLANE BUFFERS

BACKPLANE CONTROLS

LOCAL EXPANSION BUS

Hub 0

Hub 1

Hub 2

Hub 3

Hub 4

Hub 5

Hub 6

Hub 7

Fig. 2 192-port stacked repeater

Содержание NWK954

Страница 1: ...on transformers QUAD RJ45 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 CLOCK DRIVERS OSCILLATOR BACKPLANE BUFFERS...

Страница 2: ...NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 QUAD MAGNETICS NWK954 CLOCK DRIVERS OSCILLATOR BACKPLANE BUFFERS BACKPLANE CONTROLS LOCAL EXPANSION BUS Hub 0 Hub 1 Hub 2 Hub 3...

Страница 3: ...EF P2_TXGND2 P2_TXVDD2 P2_TXON P2_TXOP P2_TXGND1 NWK954 Fig 3 Pin connections top view FUNCTIONAL DESCRIPTION Overvlew The NWK954 is a mixed signal CMOS device which integrates all of the functions re...

Страница 4: ...TER CONTROLLER POWER ON RESET IRD 4 0 LACTOUT_N LACTIN_N BPACTOUT_N BPACTIN_ N 7 1 BPDIE_N BPDOE_N BPCLK BPCOL_N BPCOLIN_N BPCOLOE_N EXPANSION PORT ACTLED_N 4 0 COLLED_N P0_RXLED_N P0_ERLED_N P1_RXLED...

Страница 5: ...it times After this time the port will be isolated and the jam signal will cease The NWK954 will also isolate a port that suffers 2 successive false carrier events In the isolated state packets receiv...

Страница 6: ...IN_ N 7 1 LACTIN_N 5 1 LACTOUT_N BPCOLIN_N BPCOL_N BPCLK IRD 4 0 TXCLKIN BPACTIN_ N 7 1 LACTIN_N 5 1 LACTOUT_N BPCOLIN_N BPCOL_N BPCLK IRD 4 0 TXCLKIN BPACTIN_ N 7 1 BPACTOUT_N LACTIN_N 5 1 LACTOUT_N...

Страница 7: ...ve low but can be changed to active high by the addition of an external pull down resistor This resistor is sensed during RESET_N 0 BPCOL_N is also asserted when a collision occurs between two twisted...

Страница 8: ...escrambler output is continuously monitored and the Descrambler is re synchronized if insufficient idle sequences are detected 100BASE TX Transmitter The 100BASE TX transmitter generates a 125MHz tran...

Страница 9: ...temally Table 4 Expansion Port Signal IRD4 IRD3 IRD2 IRD1 IRD0 LACTOUT_N LACTIN_N5 LACTIN_N4 LACTIN_N3 LACTIN_N2 LACTIN_N1 BPACTOUT_N Description Inter repeater data Transfers 5 bit symbol data betwee...

Страница 10: ...ackplane Output changes on the rising edge of TXCLKIN Only one of the local NWK954s is required to drive this signal the others should be left unconnected Polarity defaults to active low but may be sw...

Страница 11: ...indicate an error on port 0 See the text for a full description Port 1 error LED Drives an LED to indicate an error on port 1 See the text for a full description Port 2 error LED Drives an LED to indi...

Страница 12: ...ground for port 1 Transmit power for port 1 Receive ground for port 1 Receive power for port 1 Transmit ground for port 2 Transmit power for port 2 Receive ground for port 2 Receive power for port 2 T...

Страница 13: ...tput high voltage Output low voltage Rise time Fall time Tristate leakage Capacitance Open drain digital output Output low voltage Fall time Tristate leakage Capacitance High drive open drain digital...

Страница 14: ...uence of 01010101 NRZ Total transmit jitter including duty cycle distortion and baseline wander must be less than 1 4ns p p TP PMD 9 1 2 2 TP PMD 9 1 3 TP PMD 9 1 3 TP PMD 9 1 4 TP PMD 9 1 5 TP PMD 9...

Страница 15: ...R2 R1 P3_RXIN P3_RXIP P3_TXREF P3_TXGND2 P3_TXON P3_TXOP R4 P2_TXOP P2_TXON P2_TXREF P3_TXGND2 P2_RXIP P2_RXIN 74 73 70 69 67 66 63 62 56 55 42 41 34 P1_RXIN P1_RXIP P1_TXREF P1_TXGND2 P1_TXON P1_TXO...

Страница 16: ...Cheney Manor Swindon Wiltshire SN2 2QW United Kingdom Tel 01793 518000 Fax 01793 518411 MITEL SEMICONDUCTOR 1500 Green Hills Road Scotts Valley California 95066 4922 United States of America Tel 408...

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