VSC7126QX Vitesse Semiconductor Corp., VSC7126QX Datasheet

VSC7126QX

Manufacturer Part Number

VSC7126QX

Description

1.0625Gb/s fibre channel transceiver. 3.3V supply

Manufacturer

Vitesse Semiconductor Corp.

Datasheet

1.VSC7126QX.pdf (16 pages)

Specifications of VSC7126QX

Case

QFP

01+

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Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

VSC7126QX

Manufacturer:

VITESSE

Quantity:

1 831

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VSC7126

Datasheet

3/4/99

G52148-0, Rev. 4.3

Features

General Description

strained applications. It accepts two 10-bit 8B/10B encoded transmit characters, latches them on the rising edge

of TBC and serializes the data onto the TX+/- PECL differential outputs at a baud rate which is twenty times the

TBC frequency. It also samples serial receive data on the RX+/- PECL differential inputs, recovers the clock

and data, deserializes it onto two 10-bit receive characters, outputs a recovered clocks at one twentieth of the

incoming baud rate and detects Fibre Channel “Comma” characters. The VSC7126 contains on-chip PLL cir-

cuitry for synthesis of the baud-rate transmit clock, and extraction of the clock from the received serial stream.

These circuits are fully monolithic and require no external components.

VSC7126 Block Diagram

The VSC7126 is a full-speed Fibre Channel Transceiver optimized for Host Adapter and other space- con-

• ANSI X3T11 Fibre Channel Compatible 1.0625

• GLM Compatible (FCSI-301-Rev 1.0)

• 20 Bit TTL Interface For Transmit And Receive Data

• Monolithic Clock Synthesis And Clock Recovery -

• 53.125 MHz TTL Reference Clock

COM_DET

L_UNUSE

EN_CDET

Gbps Full-duplex Transceiver

No External Components

EWRAP

RBC(0)

RBC(1)

TXEN#

R0:19

T0:19

TBC

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

53.125 MHz

Q D

53.125 MHz

Frame

Logic

D Q

VITESSE

Multiply (x20)

VITESSE SEMICONDUCTOR CORPORATION

SEMICONDUCTOR CORPORATION

PLL Clock

to Serial

Comma

Parallel

Serial to

Detect

Parallel

Retimed

Recovered

Data

Clock

Q D

Synthesized

Serial Data

Clock

• Automatic Lock-to-Reference Function

• Suitable For Both Copper And Fiber

• Low Power Operation - 850 mW

• 80 Pin, 14x14 mm PQFP

• Single +3.3V Power Supply

Recovery

Optical Link Applications

Clock

D Q

2:1

1.0625 Gbits/sec Fibre

Channel Transceiver

TX+

TX-

RX+

RX-

Page 1

Related parts for VSC7126QX

VSC7126QX Summary of contents

Page 1

Datasheet VSC7126 Features • ANSI X3T11 Fibre Channel Compatible 1.0625 Gbps Full-duplex Transceiver • GLM Compatible (FCSI-301-Rev 1.0) • 20 Bit TTL Interface For Transmit And Receive Data • Monolithic Clock Synthesis And Clock Recovery - No External Components • ...

Page 2

Gbits/sec Fibre Channel Transceiver Functional Description Clock Synthesizer: The VSC7126 clock synthesizer multiplies the 53.125 MHz reference frequency provided on the TBC pin achieve a baud rate clock at nominally 1.0625 GHz. The clock synthesizer contains ...

Page 3

Datasheet VSC7126 by the adjoining protocol logic on the falling edge of RBC(0). In order to maximize the setup and hold times available at this interface, the parallel data is loaded into the output register at a point nominally midway ...

Page 4

Gbits/sec Fibre Channel Transceiver Figure 2: Detection of a Properly Aligned Comma Character RBC(0) COM_DET R0:9 R10:19 TChar: 10 bit Transmission Character Figure 3: Detection and Resynchronization of an Improperly Aligned Comma Receiving Two Consecutive K28.5+TChar Transmission Words RBC(0) ...

Page 5

Datasheet VSC7126 AC Characteristics TBC T0:19 Data Valid 20 Bit Data Table 1: Transmit AC Characteristics Parameters Description T0:19 Setup time to the T 1 rising edge of TBC T0:19 hold time after the T 2 rising edge of TBC ...

Page 6

Gbits/sec Fibre Channel Transceiver RBC(0) RBC(1) R0:19 & Data Valid COM_DET LUNUSE Table 2: Receive AC Characteristics Parameters Description Data or COM_DET Valid T 1 prior to RBC(0) fall Data or COM_DET Valid T 2 after RBC(0) fall Deviation ...

Page 7

Datasheet VSC7126 TBC Table 3: Reference Clock Requirements Parameters Description FR Frequency Range FO Frequency Offset T ,T Pulse Width, Low / High TBC duty cycle T ,T TBC rise and fall time RCR RCF Total jitter ...

Page 8

Gbits/sec Fibre Channel Transceiver DC Characteristics Parameters Description V Output HIGH voltage (TTL Output LOW voltage (TTL) OL Serial Output voltage V differential peak-to-peak swing OUT75 (TX+/TX-) Serial Output voltage V differential peak-to-peak swing OUT50 (TX+/TX-) Serial ...

Page 9

Datasheet VSC7126 Figure 7: Parametric Measurement Information Serial Input Rise and Fall Time T r Receiver Input Eye Diagram Jitter Tolerance Mask Serial Output Load G52148-0, Rev. 4.3 3/4/99 741 Calle Plano, Camarillo, CA 93012 • ...

Page 10

Gbits/sec Fibre Channel Transceiver Figure 8: Transmitter Jitter Measurement Method BERT Pattern Generator CLK = 1.0625 GHz DATA = 00000 0000011111 11111 RJ -K28.7 -K28.7 0011111000 0011111000 Random jitter (RJ) measurements performed according to Fibre Channel 4.3 Annex A, ...

Page 11

Datasheet VSC7126 Input Structures INPUT INPUT INPUT G52148-0, Rev. 4.3 3/4/99 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE SEMICONDUCTOR CORPORATION Figure 9: Input Structures V +3 Current Limit R R GND TBC and ...

Page 12

Gbits/sec Fibre Channel Transceiver Package Pin Descriptions Table 4: Pin Identification Pin # Name 2,4,6,9,11,14, 16,18,20,23,3, T0:19 5,8,10,12,15, 17,19,22,24 31 TBC 79 TX+ 77 TX- Page 12 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 VITESSE ...

Page 13

Datasheet VSC7126 Pin # Name 65,63,59,57, 55,52,50,48, 45,43,64,62, R0:19 58,56,54,51, 49,47,44,42 34 EWRAP 70 RX+ 69 RX- 39 RBC(0) 38 RBC(1) 27 EN_CDET 37 COMDET 35 TXEN# 66 LUNUSE 26 TEST1 28 TEST2 29 TEST3 1,21,30,68,72 VSS 40,41,60,61 VSST 74 ...

Page 14

Gbits/sec Fibre Channel Transceiver Package Information TYP A 10 TYP K NOTES: Drawing not to scale. All units in mm unless otherwise noted. Page 14 741 Calle Plano, Camarillo, CA 93012 • ...

Page 15

Datasheet VSC7126 Package Thermal Characteristics The VSC7126 is packaged PQFP with an integrated heat spreader. These packages use indus- try-standard EIAJ footprints, but have been enhanced to improve thermal dissipation. The construction of the packages is ...

Page 16

Gbits/sec Fibre Channel Transceiver Ordering Information The order number for this product is formed by a combination of the device number, and package type. Device Type VSC7126: 1.0625 Gbps Transceiver Package Style QX: 80-pin PQFP ...

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