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参数资料
| 型号： | G218AT-D3 |
| 厂商： | Global Mixed-mode Technology Inc. |
| 英文描述： | Multi-mode LVD/SE SCSI Terminator |
| 中文描述： | 多模内径/东南的SCSI终结者 |
| 文件页数： | 5/9页 |
| 文件大小： | 130K |
| 代理商： | G218AT-D3 |
Ver 3.3
Sep 11, 2001
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G218A
Global Mixed-mode Technology Inc.
Pin Description (for 28pin SSOP)
PIN
SYMBOL
DESCRIPTION
1
VREF*
Reference Voltage. 2.85-volt reference; a regulator bypass, must be connected to a 4.7F capacitor.
2-5,7-12,
18-21, 23-26
Rx+, Rx-
Signal Termination. (X=1,2,3,…..9)
Rx+: Ground line for single-ended or positive line for differential applications for the SCSI bus.
Rx-: Signal line/active line for single-ended or negative line in differential applications for the SCSI
bus.
6,22
NC
No Connect. Do not connect these pins.
13
DISCNCT
Disconnect. When pulled high, the G218 isolates its bus pins (Rx+, Rx-) from the SCSI bus.
14
GND
Ground. Terminator ground pin. Connected to ground.
15
M/S
Master/slave. Used to select which terminator is the controlling device. M/S pin high enables the
DIFFSENSE driver.
16
DIFFSENSE Output to drive the SCSI bus DIFFSENS line.
17
DIFFB
DIFFB pin should be connected to a 0.1F capacitor to GND and 20k resistor to SCSI/Bus
DIFFSENS line. An input pin to detect the type of device (differential or single-ended) on the SCSI
bus.
27,28
TPWR
Terminator Power. Connect to the SCSI TERMPWR line and de-couple with a 2.2F capacitor.
*The VREF keeps the level at 2.85 volt, despite the DISCNCT pin is asserted or not; even the termination mode is changed.
(36pin SSOP)
PIN
SYMBOL
DESCRIPTION
1
VREF*
Reference Voltage. 2.85-volt reference; a regulator bypass, must be connected to a 4.7F capaci-
tor.
2,3
NC
No Connect. Do not connect these pins.
4-7,11-16,
22-25,
29-32
Rx+
Rx-
Signal Termination. (X=1,2,3,…..9)
Rx+: Ground line for single-ended or positive line for differential applications for the SCSI bus.
Rx-: Signal line/active line for single-ended or negative line in differential applications for the SCSI bus.
8, 9,10,26,
27,28
HS/GND
Heat Sink Ground. Connect to large area PC board traces to increase power dissipation capabil-
ity.
17
DISCNCT
Disconnect. When pulled high, the G218 isolates its bus pins (Rx+, Rx-) from the SCSI bus.
18
GND
Ground. Terminator ground pin. Connected to ground.
19
M/S
Master/slave. Mode select for the non controlling terminator.
MSTR enables the DIFFSENSE driver.
20
DIFFSENSE Output to drive the SCSI bus DIFFSENS line.
21
DIFFB
DIFFB pin should be connected to a 0.1F capacitor to GND and 20k resistor to SCSI/Bus
DIFFSENS line. An input pin to detect the type of device (differential or single-ended) on the SCSI
bus.
33
SE
Single ended mode indicator. It is HIGH when terminator is operating in SE mode.
34
LVD
Low Voltage Differential mode indicator. It is HIGH when terminator is operating in LVD mode.
35
HVD
High Voltage Differential mode indicator. It is HIGH when terminator is operating in HVD mode
or thermal shutdown.
36
TPWR
Terminator Power. Connect to SCSI bus TERMPWR line and decouple with 2.2F capacitor.
*The VREF keeps the level at 2.85 volt, despite the DISCNCT pin is asserted or not; even the termination mode is changed.
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相关代理商/技术参数 |
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| G218AT-S4 | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:Multi-mode LVD/SE SCSI Terminator |
| G218AT-S5 | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:Multi-mode LVD/SE SCSI Terminator |
| G218B | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:Ultra160 Multi-mode LVD/SE SCSI Terminator |
| G218BR-D3 | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:Ultra160 Multi-mode LVD/SE SCSI Terminator |
| G218BR-D3F | 制造商:GMT 制造商全称:Global Mixed-mode Technology Inc 功能描述:Ultra160 Multi-mode LVD/SE SCSI Terminator |
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