VSC7128QS Vitesse Semiconductor Corp., VSC7128QS Datasheet

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VSC7128QS

Manufacturer Part Number
VSC7128QS
Description
Hex port bypass circuit/dual repeater for 1.0625 Gb/s FC-AL disk arrays. 3.3 supply, 1.3W
Manufacturer
Vitesse Semiconductor Corp.
Datasheet

Specifications of VSC7128QS

Case
QFP
Dc
00+

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Part Number
Manufacturer
Quantity
Price
Part Number:
VSC7128QS
Manufacturer:
VITESSE
Quantity:
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Part Number:
VSC7128QS
Manufacturer:
VITESSE
Quantity:
20 000
VSC7128
Advance Product Information
8/31/98
G52177-0, Rev. 2.3
General Description
(CRU) and dual Signal Detect Units (SDU). These functions are integrated into a single part to minimize circuit
size, part count, cost, high frequency routing and jitter accumulation. Together, they allow for optimized designs
of FC-AL JBOD systems that provide resiliency and hot insertion/removal of disk drives. The PBCs configure
the FC-AL loop to either include or exclude each drive. Repeaters retime the incoming signal thereby attenu-
ating jitter so that downstream devices see high amplitude, low jitter signals. The SDUs determine whether the
output of the CRU is a valid Fibre Channel signal. Disk drives are connected directly to the LSO/LSI/SEL pins
while the IN/OUT pins can be connected to any FC-AL devices.
VSC7128 Block Diagram
Features
The VSC7128 contains six Port Bypass Circuits (PBCs), dual embedded Clock Recovery Unit repeaters
• Supports ANSI X3T11 1.0625Gb/s FC-AL Disk
• Dual Repeaters (CRUs) Improve Signal Quality
• Six Port Bypass Circuits (PBCs) for Resiliency
• Dual Digital Signal Detect Units (SDUs)
OUT1+
OUT1-
FAILSEL
REFCLK
(106/53 MHz)
IN1+
IN1-
Attach for Resiliency
RFSEL
CRU1
SDU1
CMU
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
MUX8
1
0
PBC1
DRIVE
DISK
VITESSE
#1
SEMICONDUCTOR CORPORATION
VITESSE SEMICONDUCTOR CORPORATION
1
0
PBC2
DRIVE
DISK
#2
1
0
PBC3
DRIVE
DISK
#3
1
0
• Fully Differential for Minimum Jitter
• Selectable REFCLK: 53.125 / 106.25MHz
• TTL Bypass Select
• 3.3V Supply, 1.3W
• 64-Pin, 14 mm Thermally Enhanced PQFP
PBC4
Hex Port Bypass Circuit / Dual Repeater
DRIVE
DISK
#4
1
0
for 1.0625 Gb/s FC-AL Disk Arrays
MUX7
PBC5
DRIVE
DISK
#5
0
1
1
0
CRU2
PBC6
SDU2
DRIVE
DISK
#6
1
0
IN2+
IN2-
OUT2+
OUT2-
Page 1

Related parts for VSC7128QS

VSC7128QS Summary of contents

Page 1

Advance Product Information VSC7128 Features • Supports ANSI X3T11 1.0625Gb/s FC-AL Disk Attach for Resiliency • Dual Repeaters (CRUs) Improve Signal Quality • Six Port Bypass Circuits (PBCs) for Resiliency • Dual Digital Signal Detect Units (SDUs) General Description The ...

Page 2

Hex Port Bypass Circuit / Dual Repeater for 1.0625 Gb/s FC-AL Disk Arrays Functional Description A Port Bypass Circuit contains a differential 2:1 mux operating at 1.0625 Gb/s. The input to the PBC is always passed to the LSOx output ...

Page 3

Advance Product Information VSC7128 AC Characteristics INx+/-, LSIx+/- LSOx+/-, OUTx+/- REFCLK T t Table 1: AC Characteristics Parameters Description Differential Inputs/Outputs Latency from IN, LSI to LSO OUT T Differential Output Rise/Fall time s Reference Clock Requirements T ...

Page 4

Hex Port Bypass Circuit / Dual Repeater for 1.0625 Gb/s FC-AL Disk Arrays DC Characteristics (Over recommended operating conditions). Parameters Description V Input HIGH voltage (TTL Input LOW voltage (TTL Input HIGH current (TTL ...

Page 5

Advance Product Information VSC7128 Input Structures Two input structures exists in this part; TTL and High Speed, Differential Inputs. The TTL Inputs will inter- face with any TTL or 3. CMOS outputs. The High Speed, Differential Inputs are ...

Page 6

Hex Port Bypass Circuit / Dual Repeater for 1.0625 Gb/s FC-AL Disk Arrays Package Pin Descriptions SEL7 REFCLK REFSEL FAIL1- VDD VSS TEST1 VDDA VSS TEST2 TEST3 FAILSEL SEL8 FAIL2- IN1- IN1+ (Top View) Page 6 741 Calle Plano, Camarillo, ...

Page 7

Advance Product Information VSC7128 Table 2: Pin Description Pin # Name 16, 15 IN1+, IN1- 63, 62 IN2+, IN2- 20, 19 OUT1+, OUT1- 60, 59 OUT2+, OUT2- 26, 25 LSI1+, LSI1- 29, 28 LSI2+, LSI2- 38, 37 LSI3+, LSI3- 41, ...

Page 8

Hex Port Bypass Circuit / Dual Repeater for 1.0625 Gb/s FC-AL Disk Arrays Package Information 0.30 RAD. TYP. 0.20 RAD. TYP. NOTES: Drawing not to scale. All units ...

Page 9

Advance Product Information VSC7128 Package Thermal Characteristics The VSC7128 is packaged into a thermally enhanced plastic quad flatpack with an exposed heat spreader. This package adheres to industry standard EIAJ footprints for a 14x14mm body, 64 lead PQFP. The package ...

Page 10

... Use of a Vitesse product in such applications without the written consent is prohibited. Page 10 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7128 VITESSE Exposed Heat Spreader VSC7128QS ####AAAA Lot Tracking Code VITESSE SEMICONDUCTOR CORPORATION VSC7128 QS Package Suffix G52177-0, Rev. 2.3 8/31/98 ...

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