Datasheet > G220

G220

更新时间： 2024-09-10 03:38:27

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描述
Ultra320 Multi-mode LVD/SE SCSI Terminator

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数据手册

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G220 数据手册

Global Mixed-mode Technology Inc.

Ultra320 Multi-mode LVD/SE SCSI Terminator

G220

Features

General Description

^ꢀAuto-selectable multi-mode Single-Ended

or LVD Termination

The G220 Multi-mode LVD/SE SCSI terminator pro-

vides a smooth transition into the next generation of

the SCSI Parallel Interface (SPI-4). It automatically

senses the bus, via DIFFSENS, and switches the ter-

mination to either single-ended (SE) or low voltage

differential (LVD) SCSI, dependent on which type of

devices are connected to the bus. If the G220 detects

a HVD SCSI device, it switches to a high impedance

state. For a 16-bit Wide SCSI bus to be operational,

three G220 terminators are needed.

^ꢀMeets SCSI-1, SCSI-2, SCSI-3 SPI Ultra

(Fast-20), Ultra 2(SPI-2 LVD), Ultra160 (SPI-3

LVD), and Ultra320 (SPI-4 LVD) standards

^ꢀSupports active negation

^ꢀ3pF channel capacitance

^ꢀ2.9V to 5.5V operation

^ꢀThermal protection

^ꢀHot-Swap compatible

^ꢀ5% tolerance on SE and LVD termination

resistance

The Multi-mode terminator contains all functions re-

quired to terminate and auto detect and switch modes

for SCSI Parallel Interface (SPI) bus architectures. For

the SE termination, one regulator and nine precision

110ohm resistors are used. For the LVD termination,

the G220 integrates 18 regulated supplies with nine

precision resistor strings.

^ꢀSE/LVD mode indicators

^ꢀ28 pin TSSOP package

Applications

^ꢀServer and workstation

^ꢀHigh-end PC

^ꢀIndustrial PC

Ordering Information

ORDER

NUMBER

G220D3X

^ꢀDisk Array (RAID)

^ꢀSCSI cable

TEMP.

MARKING

PACKAGE

RANGE

G220

0°C to +70°C

TSSOP-28L

Note: X Specify the packing type

U: Tape & Reel T: Tube

Pin Configuration

G220

TPWR

VREF

R1+

R1-

LVD

25 R9-

R2+

R2-

NC/ HS GND

R3+

R9+

R8-

R8+

21 R7-

R7+

19 R6-

R3-

R4+

R4-

R6+

R5+

R5-

DIFFB

16 DIFFSENSE

15 M/S

DISCNCT

GND

TSSOP-28L

Ver: 0.1 Preliminary

TEL: 886-3-5788833

http://www.gmt.com.tw

Apr 03, 2003

12 3 4 5 6 7...9

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