vsc835 Vitesse Semiconductor Corp, vsc835 Datasheet

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vsc835

Manufacturer Part Number
vsc835
Description
34x34 Crosspoint Switch With Signal Detection Semiconductor Corporation
Manufacturer
Vitesse Semiconductor Corp
Datasheet
VSC835
Datasheet
7/24/00
G52270-0, Rev. 4.1
Features
General Description
streams at up to 2.5 Gbit/s. The non-blocking switch core is programmed through a parallel port interface that
allows random access programming of each output port. A high degree of signal integrity is maintained through
the chip through fully differential signal paths.
multiplexer tree that can be programmed to one and only one of its 34 inputs, and each data input can be routed
to multiple outputs. The signal path is unregistered, so no clock is required for the data inputs. The signal path is
asynchronous, so there are no restrictions on the phase, frequency, or signal pattern at each input. Each input
channel and each output channel has an signal monitor function that can be used to identify loss of activity
(LOA). An interrupt pin is provided to signal LOA, after which an external controller can query the chip to
determine the channel(s) on which the fault occurred.
mum signal integrity. Data inputs are terminated on die through 50 ohm resistors terminated to V
with a microprocessor-style interface. The control port provides access to all chip functions, including LOA and
programming. Program buffering is provided to allow multiple program assignments to be queued and issued
simultaneously via a single configure command.
VSC835 Block Diagram
The VSC835 is a monolithic 34x34 asynchronous crosspoint switch, designed to carry broadband data
The crosspoint function is based on a multiplexer tree architecture. Each data output is driven by a 34:1
Each output driver is a fully differential switched current driver with on-die back-terminations for maxi-
The parallel interface uses TTL levels, and provides address, data, and control pins that are compatible
• 34 Input by 34 Output Crosspoint Switch
• 2.5 Gbits/sec. NRZ Data Bandwidth
• TTL Compatible P Interface
• Differential PECL Data Inputs
• On-chip 50 Input Terminations
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
VITESSE
VITESSE SEMICONDUCTOR CORPORATION
SEMICONDUCTOR CORPORATION
A33
A0
P interface
Control Logic
34x34 Crosspoint Switch with Signal Detection
• 50 Source Terminated PECL Output Drivers
• Single 3.3V Supply
• 14W Maximum Power Dissipation
• High Performance 256 BGA Package
Y33
Y0
TERM
2.5 Gbits/sec
.
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vsc835 Summary of contents

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... On-chip 50 Input Terminations General Description The VSC835 is a monolithic 34x34 asynchronous crosspoint switch, designed to carry broadband data streams 2.5 Gbit/s. The non-blocking switch core is programmed through a parallel port interface that allows random access programming of each output port. A high degree of signal integrity is maintained through the chip through fully differential signal paths ...

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... Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION Figure 1: Detailed Block Diagram switch core Program memory Control interface DATA[5:0], ADDR[5:0] ALE, CSB, WRB, RDB INTB, MONCLK, CONFIG VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 Y,YN[33:0] . TERM G52270-0, Rev. 4.1 7/24/00 ...

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... Datasheet VSC835 Programming Interface The switch core is programmed through a parallel interface circuit that allows random reads or writes to the program memory array. The program memory array is buffered to allow multiple programming instructions to be loaded simultaneously with the CONFIG pin. Parallel programing can be clocked 50MHz rate and state read-back can be performed 25MHz ...

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... Rx Signal monitor for inputs [A16-A19], [A20-A23] Rx Signal monitor for inputs [A24-A27], [A28-A31] Rx Signal monitor for inputs [A32-A33] Description 31 PRBS (4) =2.5 Gbits/s. For lower rate signals, use 0.375/F RATE VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 (Logic ‘1’=No activity) Min Typ Max Units - - 2.5 Gbits/s ...

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... Datasheet VSC835 Figure 2: Figure 2: Interrupt Timing (Change in Monitor State Registers) MONCLK Monitor State Monitor State Reg INTB Figure 3: Figure 3: Interrupt Timing (No change in Monitor State Registers) MONCLK Monitor State Monitor State Reg INTB ADR[5:0] D[5:0] CSB WRB RDB CONFIG G52270-0, Rev. 4.1 7/24/00 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 ...

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... Note: Icc Specified with outputs terminated with 50 ohms to +2.0V and Chip Vterm=+2.0V, Vcc = 3.45V Page 6 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION Description Description =V -1.3V TERM CC =V -2.0V TERM CC VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 Min Max Units - ...

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... Datasheet VSC835 Table 6: Control Port input levels (TTL) Parameter Description V Input HIGH voltage (TTL Input LOW voltage (TTL Input HIGH current (TTL Input LOW current (TTL Output HIGH voltage (TTL Output LOW voltage (TTL Tri-state output current (TTL) ...

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... TERM Case Temperature Operating Range (T)................................................................................................ 0 ESD Ratings Proper ESD procedures should be used when handling this product. The VSC835 is rated to the following ESD voltages based on the human body model: 1. All pins are rated at or above TBD. Page 8 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 ...

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... Datasheet VSC835 PAD V PECL Input Equivalent Circuit PAD VCOM ( Input Equivalent Circuit G52270-0, Rev. 4.1 7/24/00 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION 34x34 Crosspoint Switch with Signal Detection Figure 5: I/O Equivalent Circuits PAD 50 term PECL Output Equivalent Circuit ...

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... Crosspoint Switch with Signal Detection Package Pin Descriptions The VSC835 is packaged in a 27x27mm 256 pin ball grid array package. The 256 BGA package is ther- mally enhanced and carries the high-speed signals over controlled impedance lines from the solder ball to the circuit die ...

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... Datasheet VSC835 Y10 Y12 Y14 Y16 Y18 Y20 Y22 Y24 Y26 Y28 Y30 Y32 VHYS VCOML G52270-0, Rev. 4.1 7/24/00 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION 34x34 Crosspoint Switch with Signal Detection ...

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... Data Input Data Input Data Input Data Input Data Input Data Input Data Input Data Input Data Input Data Input Data Input Data Input VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 Function Level PECL PECL PECL PECL PECL PECL PECL PECL PECL PECL PECL ...

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... Datasheet VSC835 Table 9: Package Pin Identification Signal Name Y0, YN0 E18, E17 Y1, YN1 E3, E4 Y2, YN2 E20, F20 Y3, YN3 E1, F1 Y4, YN4 F17, F18 Y5, YN5 F4, F3 Y6, YN6 G18, G17 Y7, YN7 G3, G4 Y8, YN8 G20, H20 Y9, YN9 G1, H1 Y10, YN10 H17, H18 Y11, YN11 H4, H3 Y12, YN12 ...

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... Loss of activity monitor clock (active high) Power Supplies Power Power Power for Output Channels 0,2 Power for Output Channels 4,6 Power for Output Channels 8,10 Power for Output Channels 12,14 Power for Output Channels 16,18 VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 Function Level TTL TTL TTL TTL TTL TTL TTL TTL ...

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... Datasheet VSC835 Table 9: Package Pin Identification Signal Name VEE N19 VEE P19 VEE R19 VEE T19 VEE F2 VEE G2 VEE J2 VEE K2 VEE L2 VEE N2 VEE P2 VEE R2 VEE T2 B5, B7, B12, B15, W4, W6, W12, VTERM W15 VCOML T18 VCOMR C4 VHYS T17 G52270-0, Rev. 4.1 7/24/00 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 ...

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... VITESSE SEMICONDUCTOR CORPORATION 27mm 256 BGA Package Drawing NOTES: MAX. 1.95 0.70 27.20 27.20 0.85 1.25 0.25 0.25 0.50 VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 g DETAIL 0.10 D -A- -B- TOP VIEW E (4 PLCS) G52270-0, Rev. 4.1 7/24/00 ...

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... VSC835 Ordering Information The order number for this product is formed by a combination of the device number, and package type. Device Type VSC835: 2.5 GHz 34x34 Crosspoint Switch with Signal Monitoring 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 that this datasheet is current prior to placing orders ...

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... Gbits/sec 34x34 Crosspoint Switch with Signal Detection Page 18 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION VITESSE SEMICONDUCTOR CORPORATION Datasheet VSC835 G52270-0, Rev. 4.1 7/24/00 ...

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