G219T-D3 Datasheet: Ultra320 Multi-mode LVD/SE SCSI Terminator





G219T-D3 Ultra320 Multi-mode LVD/SE SCSI Terminator Datasheet

Part Number G219T-D3
Description Ultra320 Multi-mode LVD/SE SCSI Terminator
Manufacture ETC
Total Page 9 Pages
PDF Download Download G219T-D3 Datasheet PDF

Features: Global Mixed-mode Technology Inc. G219 Ultra320 Multi-mode LVD/SE SCSI Termin ator Features „Auto-selectable multi- mode Single-Ended General Description The G219 Multi-mode LVD/SE SCSI termina tor provides a smooth transition into t he next generation of the SCSI Parallel Interface (SPI-4). It automatically se nses the bus, via DIFFSENS, and switche s the termination to either single-ende d (SE) or low voltage differential (LVD ) SCSI, dependent on which type of devi ces are connected to the bus. If the G2 19 detects a HVD SCSI device, it switch es to a high impedance state. For a 16- bit Wide SCSI bus to be operational, th ree G219 terminators are needed. The Mu lti-mode terminator contains all functi ons required to terminate and auto dete ct and switch modes for SCSI Parallel I nterface (SPI) bus architectures. For t he SE termination, one regulator and ni ne precision 110ohm resistors are used. For the LVD termination, the G219 inte grates 18 regulated supplies with nine precision resistor string.

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Global Mixed-mode Technology Inc.
G219
Ultra320 Multi-mode LVD/SE SCSI Terminator
Features
„Auto-selectable multi-mode Single-Ended
or LVD Termination
„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
„28 pin TSSOP package
„28 Pin TSSOP: Pin Compatible with DS2119
Applications
„Server and workstation
„High-end PC
„Industrial PC
„Disk Array (RAID)
„SCSI cable
General Description
The G219 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 G219 detects
a HVD SCSI device, it switches to a high impedance
state. For a 16-bit Wide SCSI bus to be operational,
three G219 terminators are needed.
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 G219 integrates 18 regulated supplies with nine
precision resistor strings.
Pin Configuration
VREF 1
R1+ 2
R1- 3
R2+ 4
R2- 5
NC/ HS GND
R3+
R3-
R4+
6
7
8
9
R4- 10
R5+ 11
R5- 12
DISCNCT 13
GND 14
G219
28 TPWR
27 TPWR
26 R9-
25 R9+
24 R8-
23 R8+
22 NC/ HS GND
21 R7-
20 R7+
19 R6-
18 R6+
17 DIFFB
16 DIFFSENSE
15 M/S
28Pin TSSOP
Ver 1.2
Feb 08, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
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