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Global Mixed-mode Technology - Ultra320 Multi-mode LVD/SE SCSI Terminator

Numéro de référence G220
Description Ultra320 Multi-mode LVD/SE SCSI Terminator
Fabricant Global Mixed-mode Technology 
Logo Global Mixed-mode Technology 





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G220 fiche technique
Global Mixed-mode Technology Inc.
G220
Ultra320 Multi-mode LVD/SE SCSI Terminator
Features
General Description
„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
www.DataSheet„4U.c5o%m tolerance on SE and LVD termination
resistance
„SE/LVD mode indicators
„28 pin TSSOP package
Applications
„Server and workstation
„High-end PC
„Industrial PC
„Disk Array (RAID)
„SCSI cable
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.
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.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
G220D3X
G220
0°C to +70°C
Note: X Specify the packing type
U: Tape & Reel
T: Tube
TSSOP-28L
Pin Configuration
VREF 1
R1+ 2
R1- 3
R2+ 4
R2- 5
NC/ HS GND 6
R3+ 7
R3- 8
R4+ 9
R4- 10
R5+ 11
R5- 12
DISCNCT 13
GND 14
G220
TSSOP-28L
28 TPWR
27 LVD
26 SE
25 R9-
24 R9+
23 R8-
22 R8+
21 R7-
20 R7+
19 R6-
18 R6+
17 DIFFB
16 DIFFSENSE
15 M/S
Ver: 0.1 Preliminary
Apr 03, 2003
1
TEL: 886-3-5788833
http://www.gmt.com.tw

PagesPages 9
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