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Teilenummer | NWK954GH1N |
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Beschreibung | QUAD FAST ETHERNET REPEATER | |
Hersteller | Mitel Networks | |
Logo | ||
Gesamt 17 Seiten Supersedes January 1998 version, DS4842 - 1.1
The NWK954 is a fully integrated, unmanaged, 4-port Fast
Ethernet Repeater conforming to the IEEE 802.3 100BASE-TX
Standard. The device integrates the 802.3 Repeater functions
with four 100BASE-TX PHY modules, enabling direct connection
to the isolation transformers with no additional PHY components.
It has built-in LED drivers for display of port activity and
network utilization. There is a local expansion port which allows
up to six NWK954s to be cascaded to form a 24-port repeater
with no additional components.
With the addition of simple backplane driver/receivers, up to
eight 24-port repeaters can be stacked.
The NWK954 is supplied in a 128-pin PQFP and interfaces
to the twisted pair media through 1:1 isolation transformers.
ORDERING INFORMATION
NWK954D/CG/GH1N
NWK954
QUAD FAST ETHERNET REPEATER
PRELIMINARY INFORMATION
DS4842-2.1 April 1998
FEATURES
s Compliant with IEEE 802.3 100BASE-TX Repeater
Unit Specification
s Incorporates four IEEE 802.3 Compliant 100BASE-TX
Ports
s Local Expansion Port for Cascading to 24 Ports
s Stackable Backplane for Expansion up to 192 Ports
s Link/Activity LED and Receive Error LED for each Port
s Collision LED
s Five LED Network Utilization Display
s Base Line Wander Correction
s Power Saving on Unused Ports
s Driven from a Single 25MHz Clock
s Single 5V supply
s Low Power CMOS Technology
s 128-pin PQFP package
BACKPLANE CONTROLS
BACKPLANE BUFFERS
OSCILLATOR
CLOCK DRIVERS
LOCAL EXPANSION BUS
NWK954
NWK954
NWK954
QUAD
MAGNETICS
QUAD RJ45
QUAD
MAGNETICS
QUAD
MAGNETICS
NWK954
QUAD
MAGNETICS
Fig. 1 System block diagram
NWK954
QUAD
MAGNETICS
NWK954
QUAD
MAGNETICS
NWK954
BACKPLANE 5
DATA
BACKPLANE
CLOCK
BACKPLANE
ACTIVITY
7
BACKPLANE
COLLISION
6
7
BPACTIN_ N [7:1]
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCOL_N
BPCLK
5
IRD [4:0]
7
BPACTIN_ N [7:1]
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCOL_N
BPCLK
5
IRD [4:0]
7
BPACTIN_ N [7:1]
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCOL_N
BPCLK
5
IRD [4:0]
7
BPACTIN_ N [7:1]
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCOL_N
BPCLK
5
IRD [4:0]
7
BPACTIN_ N [7:1]
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCOL_N
BPCLK
5
IRD [4:0]
7
BPACTIN_ N [7:1]
BPACTOUT_N
5
LACTIN_N [5:1]
LACTOUT_N
BPCOLIN_N TXCLKIN
BPCLK
BPCOL_N
5
IRD [4:0]
BPDOE_N
BPDIE_N
BPCOLOE_N
Fig. 6 External backplane drivers/receivers
CLOCK
DRIVER
25MHz
OSCILLATOR
6 Page NWK954
Power
Signal
DIGGND[5: 1]
DIGVDD[5: 1]
DIGGND6
DIGVDD6
SUBVDD[2:1]
VREFGND
VREFVDD
P0_TXGND[3:1]
P0_TXVDD[3:2]
P0_RXGND[3:1]
P0_RXVDD[3:1]
P1_TXGND[3:1]
P1_TXVDD[3:2]
P1_RXGND[3:1]
P1_RXVDD[3:1]
P2_TXGND[3:1]
P2_TXVDD[3:2]
P2_RXGND[3:1]
P2_RXVDD[3:1]
P3_TXGND[3:1]
P3_TXVDD[3:2]
P3_RXGND[3:1]
P3_RXVDD[3:1]
Pin no.
94, 100, 111, 126, 4
93, 99, 110, 125, 3
85
84
81, 16
83
82
26, 28, 32
25, 29
17, 20, 21
18, 19,22
39, 37, 33
40, 36
48, 45, 44
47, 46,43
58, 60, 64
57, 61
49, 52, 53
50, 51, 54
71, 69, 65
72, 68
80, 77,76
79, 78, 75
Type
Description
Ground
Power
Ground
Power
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Digital ground
Digital power
Quiet digital ground
Quiet digital power
Substrate power
Voltage reference ground
Voltage reference power
Transmit ground for port 0
Transmit power for port 0
Receive ground for port 0
Receive power for port 0
Transmit 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
Transmit ground for port 3
Transmit power for port 3
Receive ground for port 3
Receive power for port 3
Table 8
No Connects
Signal
TDC
TDIO
Pin no.
11
12
Type
Description
Factory test
Factory test
Do not connect to this pin
Do not connect to this pin
Table 9
ABSOLUTE MAXIMUM RATINGS
Exceeding the Absolute Maximum Ratings may cause
permanent damage to the device. Extended exposure at these
ratings will affect device reliability.
Supply voltage, VDD
Input voltage
Output voltage
Static discharge voltage
Storage temperature, TS
– 0·5V to +7·0V
– 0·5V to VDD +0·5V
– 0·5V to VDD +0·5V
4KV HBM
– 40°C to +125°C
RECOMMENDED OPERATING CONDITIONS
Neither performance nor reliability are guaranteed outside
these limits. Extended operation outside these limits may affect
device reliability.
Supply voltage, VDD
Input voltage
Output voltage
Current per pin
Ambient temperature, TA
+5·0V ± 5%
0V to VDD
0V to VDD
100mA
0°C to+70°C
12
12 Page | ||
Seiten | Gesamt 17 Seiten | |
PDF Download | [ NWK954GH1N Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
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