VITESSE VSC7140QJ

VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Features
• Supports ANSI X3T11 1.0625Gb/s, FC-AL
Disk Attach for Resiliency
• Implements 2 Hub Nodes
• Provides Bi-directional Signal Clean-up.
• Dual Digital Clock Recovery Units
• 1.2 W Typical Power Dissipation
• Dual Digital Signal Detect Units
• Dual Port Bypass Circuits
• 3.3V Power Supply
• 106.25 or 53.125 MHz Reference Clock
• 52-Pin, 10mm PQFP
General Description
The VSC7140 is a dual Fibre Channel repeater which can be used in Hubs, JBODs or any Fibre Channel
Subsystem requiring clean incoming and outgoing signals at a bulkhead connector. The digital Clock Recovery
Unit (CRU) recovers incoming data from an external device, amplifies it and attenuates jitter. A digital Signal
Detect Unit (SDU) determines whether the incoming signal contains invalid Fibre Channel data. A 2:1 multiplexer forms a Port Bypass Circuit (PBC) to route either recovered incoming data or SI to SO.
Fibre Channel subsystems requiring signal cleanup at the bulkhead would connect RX1 to the incoming
signal and SO1 to the internal subsystem’s input. RX2 would connect to the output of the subsystem and SO2
would connect to the bulkhead.
For Hub applications, SI would connect to the previous Hub Node and output data to the external device on
TX. Incoming data from the external device on RX is recovered and cleaned up and passed to the next Hub
node on SO. If the external device is not functional, SI is passed to SO.
VSC7140 Block Diagram
FAIL1-
SEL1
SDU1
RX1+
RX1-
CRU1
1
PBC1
SO1+
SO1-
0
TX1+
TX1-
SI1+
SI1ERRSEL
0
PBC2
SDU2
1
TX2+
TX2REFSEL
REFCLK
(106/53 MHz)
G52180-0, Rev 4.0
10/23/00
RX2+
RX2-
CRU2
1
SO2+
SO2-
PBC3
0
SI2+
SI2-
CMU
SEL2
FAIL2-
HUB
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
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Internet: www.vitesse.com
Page 1
VITESSE
SEMICONDUCTOR CORPORATION
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
Data Sheet
VSC7140
Functional Description
The VSC7140 contains two fully integrated repeaters to improve signal quality and determine whether the
input to the repeater contains invalid Fibre Channel data. Each repeater consists of a Clock Recovery Unit
(CRU) and a digital Signal Detect Unit (SDU). The CRU locks onto the incoming signal, generates a recovered
clock (nominally 1.0625 GHz) and uses this clock to resynchronize the incoming signal. The recovered data
has improved signal quality due to amplification and jitter attenuation. Recovered data is retimed to the recovered clock, not to the reference clock, REFCLK. The design of the CRU eliminates the need for any Lock-toReference signal since, in the absence of data, the CRU locks onto REFCLK automatically which eliminates the
need for any external control.
The Signal Detect Units (SDUs) test the recovered data from the CRUs for invalid Fibre Channel data by
looking for run length errors (more than 5 consecutive 1’s or 0’s) and the absence of a seven bit pattern found in
the K28.5 character of either disparity (‘0000101’ or ‘1111010’). This K28.5 pattern should occur between all
valid Fibre Channel frames. The maximum length of a Fibre Channel frame is 2148 bytes (or 21,480 encoded
bits) and the SDU divides time into 1-1/2 maximum frames with a 15-bit counter (~31 microseconds). At the
end of each interval, any run length or K28.5 errors which occured during the interval are stored internally for
use by the state machine which drives the SDU output, FAILn-.
The ERRSEL input controls both SDUs while the FAILn- outputs provide the status of each SDU. ERRSEL selects two different modes generated by the SDU; Single Frame (LOW) or Multiple Frame (HIGH) error
modes. In Single Frame Error Mode, any error condition that occurs within the 1-1/2 frame interval causes
FAILn- to be asserted LOW immediately after that interval. FAILn- remains asserted until immediately after an
error free interval. In Multiple Frame Error Mode, FAILn- is asserted after four consecutive intervals containing
errors and remains asserted until after four consecutive error-free intervals occur. The intent of the Multiple
Frame Error Mode is to allow FAIL1- or FAIL2- to be directly connected to the Port Bypass Circuit controls,
SEL1 or SEL2, in order to configure the part to isolate RX1 or RX2 whenever invalid data is present. Single
Frame Error Mode allows the user to develop their own algorithm for monitoring data and controlling SEL1 or
SEL2.
A TTL reference clock, REFCLK, is used by the internal Clock Multiplier Unit (CMU) to generate a baud
rate clock (nominally 1.0625 GHz). If REFSEL is HIGH, the CMU multiplies REFCLK (nominally 106.25
MHz) by a factor of 10. If REFSEL is LOW, the CMU multiplies REFCLK (nominally 53.125 MHz) by a factor of 20. The user must ensure that REFSEL is properly set in order to match the frequency of REFCLK.
Three Port Bypass Circuits (PBC) contain differential 2:1 muxes operating at 1.0625 Gb/s for routing serial
data. SEL1 configures PBC1 to select either the output of CRU1 (HIGH) or SI1 (LOW) to drive SO1. SEL2
configures PBC2 to select either the output of CRU2 (HIGH) or the output of PBC3 (LOW) to drive SO2.
HUB configures PBC3 to select either the output of PBC1 (HIGH) or SI2 (LOW) to drive the input to PBC2.
Page 2
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Application Examples
The VSC7140 is intended for two applications, Dual Repeater or Dual Hub, as configured by HUB. Users
needing to retime both incoming and outgoing signals at the bulkhead of a Fibre Channel system would use the
part in Dual Repeater Mode (HUB is LOW). Users building Fibre Channel Hubs would use the part in Dual
Hub mode (HUB is HIGH) to fully handle the functions of two Hub Nodes.
Dual Repeater Mode
In this example, the VSC7140 forms a dual repeater in a complex Fibre Channel system, such as a JBOD
(Just a Bunch Of Disks) RAID (Redundant Array of Independent Disks) subsystem, which requires the incoming Fibre Channel signal to be retimed to ensure adequate signal quality to the input of the subsystem. Likewise, the output of the JBOD subsystem requires retiming to ensure that the outgoing signal from the system
meets the amplitude and jitter requirements of Fibre Channel. For this application, the dual CRUs are the only
circuits required although the SDUs may be used for reporting signal status. Therefore, the VSC7140 would be
configured as follows:
HUB is LOW to select Dual Repeater Mode.
RX1 connects to the external input from the bulkhead.
SO1 connects to the input to the JBOD subsystem.
RX2 connects to the output of the JBOD subsystem.
SO2 connects to the output to the bulkhead.
SI1 and SI2 are not used. Pull up SI1+ and SI2+ to VDD with 22k Ohms to prevent input oscillations.
TX1 and TX2 are not used. Leave unconnected.
SEL1 and SEL2 are driven HIGH.
FAIL1- and FAIL2- may be used for status. ERRSEL is selected as desired by the user.
Figure 1: Block Diagram: Use of VSC7140 in Dual Repeater Mode
Connector
VSC7140
G52180-0, Rev 4.0
10/23/00
RX1
CRU
SO1
SO2
CRU
RX2
Internal
Fibre Channel
Subsystem
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 3
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Dual Hub Mode
In this example, the VSC7140 is used to fully implement two adjacent nodes in a Fibre Channel Hub.
Incoming external signals on RX require retiming to improve amplitude and eliminate jitter before being used
by the Hub. The TX outputs drive the external device. A serial loop is formed by daisy chaining the SI to SO
paths of each node. The SDUs are required to configure the Hub to include external devices on the SI/SO loop
if they produce valid Fibre Channel data or to exclude them from the loop if they are not operational.
HUB is HIGH to select Hub Mode.
RX1 connects to the external output from Device #1. TX1 connects to the external input to Device #1.
RX2 connects to the external output from Device #2. TX2 connects to the external input to Device #2.
SI1 is connected to the SO2 output of the previous VSC7140. SI2 is pulled up SI2+ with 22k Ohms.
SO2 is connected to the SI1 input of the next VSC7140. SO1 is left unconnected.
If ERRSEL is HIGH, FAIL1- connects to SEL1 and FAIL2- connects to SEL2.
If ERRSEL is LOW, FAIL1- and FAIL2- are used by off-chip circuits to control SEL1 and SEL2.
Figure 2: Block Diagram: Use of VSC7140 in Hub Mode
TX1 RX1
TX2 RX2
VSC7140
CRU
CRU
SI1
SDU
SDU
FAIL1
CRU
SEL1
SDU
SO2
SEL2
CRU
SDU
FAIL2
Internal Loop
Note: SO1 and SI2 not used.
Page 4
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
AC Characteristics
Figure 3: AC Timing Diagrams
RXn,
SIn
80%
20%
SOn,
TXn
TP
TS
TS
TP
VIH(MIN)
VIL(MAX)
REFCLK
TT
TH
TT
TL
T
Table 1: AC Characteristics (Over recommended operating conditions).
Parameters
Description
Min.
Max.
Units
Conditions
Differential Inputs/Outputs
TP
Latency from Serial Input (RXn/
SIn) to Serial Output (TXn/SOn)
0.25
7.0
ns
TS
Differential Output Rise/Fall time
—
300
ps
ns
Between 20% and 80%
Reference Clock Requirements
TT
REFCLK input rise/fall times
—
2.0
108
54
MHz
106.25 MHz Nom.; REFSEL is HIGH
53.125 MHz Nom.; REFSEL is LOW
Between VIL(MAX) and VIH(MIN)
Maximum frequency offset between
10 or 20 times REFCLK and the
datarate of the serial input to the CRU.
F
REFCLK Frequency
105
52.5
FO
Frequency Offset
-200
+200
ppm
DC
REFCLK Duty Cycle
35
65
%
Measured at 1.5V
REFCLK Input HIGH/LOW time
2.5
—
ns
From VIH(MIN) to VIH(MIN) or
VIL(MAX) to VIL(MAX)
TH , TL
G52180-0, Rev 4.0
10/23/00
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 5
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
DC Characteristics (Over recommended operating conditions).
Parameters
Description
Min
Typ
Max
Units
Conditions
VIH
Input HIGH voltage (TTL)
2.0
—
5.5
V
VIL
Input LOW voltage (TTL)
0
—
0.8
V
—
IIH
Input HIGH current (TTL)
—
50
500
µA
VIN = 2.4 V
IIL
Input LOW current (TTL)
—
—
-500
µA
VIN = 0.5 V
VOH
Output HIGH Voltage (TTL)
2.4
—
—
V
IOH = -1.0mA
VOL
Output LOW Voltage (TTL)
—
—
0.5
V
IOL= +1.0mA
VDD
Supply voltage
3.14
—
3.47
V
VDD = 3.3V + 5%
PD
Power Dissipation
—
1.2
1.7
W
Outputs open, VDD = VDD max
IDD
Supply current
—
365
490
mA
Outputs open, VDD = VDD max
PECL input swing: SIn, RXn
300
—
2600
mVp-p
AC Coupled.
Internally biased at VDD/2
∆VOUT75
PECL output swing: TXn, SOn
1200
—
2200
mVp-p
75Ω to VDD – 2.0 V
∆VOUT50
PECL output swing: TXn, SOn
1200
—
2200
mVp-p
50Ω to VDD – 2.0 V
∆VIN
Absolute Maximum Ratings (1)
Power Supply Voltage (VDD) .............................................................................................................-0.5V to +4V
PECL DC Input Voltage ......................................................................................................... -0.5V to VDD +0.5V
TTL DC Input Voltage....................................................................................................................... -0.5V to 5.5V
DC Voltage Applied to TTL Outputs ................................................................................... -0.5V to VDD + 0.5V
TTL Output Current ..................................................................................................................................+/-50mA
PECL Output Current ................................................................................................................................+/-50mA
Case Temperature Under Bias .........................................................................................................-55° to +125oC
Storage Temperature.......................................................................................................................-65° to + 150oC
Maximum Input ESD (Human Body Model).............................................................................................. 1500 V
Recommended Operating Conditions
Power Supply Voltage.................................................................................................... ....... ...... ........3.3V +/- 5%
Ambient Operating Temperature Range...............................................................0°C Ambient to +95°C Case
Notes:
1) CAUTION: Stresses listed under “Absolute Maximum Ratings” may be applied to devices one at a time without causing permanent damage. Functionality at or above the values listed is not implied. Exposure to these values for extended periods may
affect device reliability.
Page 6
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Input Structures
Two input structures exists in this part; TTL and High Speed, Differential Inputs. The TTL Inputs will interface with any TTL or 3.3V or 5V CMOS outputs. The High Speed, Differential Inputs are intended to be AC
Coupled per the FC-PH specification. Being AC Coupled, the High Speed, Differential Input buffers are biased
at VDD/2. Refer to Figure 4, Input structures.
Figure 4: Input Structures
VDD +3.3 V
Current
Limit
INPUT
GND
REFCLK and TTL Inputs
A
VDD +3.3 V
INPUT
INPUT
All Resistors
3.3K
GND
High Speed Differential Input
(RXn+/-, SIn+/-)
B
G52180-0, Rev 4.0
10/23/00
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 7
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Package Pin Descriptions
51
REFSEL
49
45
43
VDD
SI1-
SI1+
VSS
INC_VSS
RX1-
RX1+
47
41
39
1
TEST3
SEL1
VDD
INC_VDD
TEST1
TEST2
REFCLK
VSS
Figure 5: Pin Diagram
TX1-
VITESSE
37
3
VSS
VDD
5
35
7
33
9
31
29
VSC7140QJ
27
Page 8
TX2-
VDD
SI2-
25
SI2+
VSS
23
INC_VSS
RX2+
VDD
21
RX2-
19
INC_VDD
ERRSEL
17
HUB
SEL2
15
VDDP
TX2+
13
VSS
(TOP VIEW)
SO2+
SO2-
11
FAIL1FAIL2-
VSS
INC_VSS
VSS
VDD
SO1INC_VSS
VDDA
INC_VSS
VDDP
SO1+
INC_VDD
VSS
TX1+
NOTE: Heat spreader is not internally connected electrically.
It should not be connected electrically by the user.
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Table 2: Pin Identification
Pin #
Name
Description
46, 45
21, 20
RX1+, RX1RX2+, RX2-
INPUT - Differential. Serial input to CRU1/CRU2. (AC Coupling recommended)
(Biased internally at VDD/2)
39, 38
28, 27
TX1+, TX1TX2+, TX2-
OUTPUT - Differential. Serial output from PBC1/PBC2. (AC Coupling recommended)
42, 41
25, 24
SI1+, SI1-SI2+,
SI2-
INPUT - Differential. Serial input. (AC Coupling recommended) (Biased internally at
VDD/2)
36, 35
31, 30
SO1+, SO1SO2+, SO2-
3
SEL1
INPUT - TTL. SEL1 configures PBC1 to select either the output of CRU1 (HIGH) or
SI1 (LOW) to drive SO1.
15
SEL2
INPUT - TTL. SEL2 configures PBC2 to select either the output of CRU2 (HIGH) or the
output of PBC3 (LOW) to drive SO2.
16
HUB
INPUT - TTL. HUB configures PBC3 to select either the ouput of PBC1 (HIGH) or SI2
(LOW) to drive the input to PBC2.
51
REFCLK
INPUT - TTL. REFerence CLocK at 1/10th or 1/20th the baud rate (Nominally 53.125
or 106.25 MHz) as determined by REFSEL. Used for internal clock multiplier unit.
1
REFSEL
INPUT - TTL. REFclk SELect. When HIGH, REFCLK is 1/10th the baud rate and
would normally be 106.25 MHz. When LOW, REFCLK is 1/20th the baud rate (53.125
MHz)
12, 13
FAIL1FAIL2-
17
ERRSEL
49, 50, 2
TEST1
TEST2
TEST3
5, 11, 19, 26
40, 47
VDD
OUTPUT - Differential. Serial output from PBCx to disk drive ‘x’. (AC Coupling
recommended).
OUTPUT - TTL. When LOW, indicates that the output of CRU1/2 contains invalid
Fibre Channel data.
INPUT - TTL. Selects the algorithm to drive the FAIL1-/FAIL2- outputs. When HIGH,
the “Multiple Frame Error Mode” is used. When LOW, the “Single Frame Error Mode”
is selected.
INPUT - TTL. LOW for factory test, HIGH for normal operation.
Power Supply. 3.3V Supply.
29, 37
VDDP
High-Speed Output Power Supply. 3.3V Supply for PECL drivers.
8
VDDA
Analog Power Supply. 3.3V for Clock Multiplier PLL. Bypass to pin 7.
4, 7, 10, 14
23, 33, 43, 52
VSS
6,18,48
INC_VDD
Internally Not Connected. Connect these pins to VDD for compatibility with future
versions of the VSC7140.
9,22,32, 34,
44
INC_VSS
Internally Not Connected. Connect these pins to VSS for compatibility with future
versions of the VSC7140.
G52180-0, Rev 4.0
10/23/00
Ground.
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 9
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Package Information
52 (QJ) PQFP Package Drawing
F
G
40
52
1
39
L
I
H
27
13
26
14
Item
mm
Tolerance
A
2.45
MAX
D
2.00
+0.15/-0.10
E
0.30
±0.05
F
13.20
±0.25
G
10.00
±0.10
H
13.20
±0.25
I
10.00
±0.10
J
0.88
+0.15/-0.10
K
0.65
BASIC
L
3.56
±0.50 DIA
0.30 RAD. TYP.
A
STANDOFF
0.25 MAX.
0.20 RAD. TYP.
0 o - 8o
0.17 MAX.
0.25
0.102 MAX. LEAD
NON-PLANARITY
E
J
10o TYP
D
100 TYP
Page 10
K
Notes:
Heat spreader up
All units in mm unless otherwise noted
Drawings not to scale.
Package Drawing #101-224-5 Issue #1
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Package Thermal Characteristics
The VSC7140 is packaged into a thermally-enhanced plastic quad flatpack. This package adheres to the
industry-standard EIAJ footprint for a 10x10mm body but has been enhanced to improve thermal dissipation
with the inclusion of an exposed copper heat spreader. The package construction is as shown in Figure 6.
Figure 6: Package Cross Section
Copper Heat Spreader
Insulator
Wire Bond
Lead
Die
Plastic Molding Compound
The thermal resistance for the VSC7140 package is improved through low thermal resistance paths from
the die to the exposed surface of the heat spreader and from the die to the leadframe through the heat spreader
overlap of the leadframe.
Table 3: 52 PQFP Thermal Resistance
Symbol
Value
Units
Thermal resistance from junction to case
2.5
oC/W
Thermal resistance from case to ambient in still air including conduction through
the leads for a non-thermally saturated board.
37.0
oC/W
θca-100
Thermal resistance from case to ambient in 100 LFPM air.
31.0
oC/W
θca-200
Thermal resistance from case to ambient in 200 LFPM air.
28.0
oC/W
θca-400
Thermal resistance from case to ambient in 400 LFPM air.
24.0
oC/W
θca-600
Thermal resistance from case to ambient in 600 LFPM air.
22.0
oC/W
θjc
θca
Description
The user must ensure that the maximum case temperature specification (95o C) is not exceeded. Given the
thermal resistance of the package in still air, the user may operate the VSC7140 in still air if the ambient temperature does not exceed 32o C (95o C - 1.7W * 37o C/W = 32o C). If operation above this ambient temperature
is required, an appropriate heatsink must be used with the part or adequate airflow must be provided.
Moisture Sensitivity Level
This device is rated with a moisture sensitivity level 3 rating. Refer to Application Note AN-20 for appropriate handling procedures.
G52180-0, Rev 4.0
10/23/00
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 11
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
VSC7140
Ordering Information
The order number for this product is formed by a combination of the device number and package type.
VSC7140
QJ
Device Type
VSC7140 - Dual Repeater / Hub Node
Package Type
QJ: 52 Pin Thermally Enhanced PQFP, 10x10 mm Body
Marking Information
The package is marked with three lines of text as shown below (QJ Package):
Pin Identifier
VITESSE
Exposed Heat Spreader
VSC7140QJ
Part Number
####AAAA
Date Code
Package Suffix
Lot Tracking Code
Notice
Vitesse Semiconductor Corporation reserves the right to make changes in its products, specifications or
other information at any time without prior notice. Therefore the reader is cautioned to confirm this datasheet is
current prior to placing any orders. The company assumes no responsibility for any circuitry described other
than circuitry entirely embodied in a Vitesse product.
Warning
Vitesse Semiconductor Corporation’s products are not intended for use in life support appliances, devices or
systems. Use of a Vitesse product in such applications without the written consent is prohibited.
Page 12
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
G52180-0, Rev 4.0
10/23/00