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参数资料
| 型号： | G220D3X |
| 厂商： | Global Mixed-mode Technology Inc. |
| 英文描述： | Ultra320 Multi-mode LVD/SE SCSI Terminator |
| 中文描述： | Ultra320的多模内径/东南的SCSI终结者 |
| 文件页数： | 8/9页 |
| 文件大小： | 201K |
| 代理商： | G220D3X |
Ver: 0.1 Preliminary
Apr 03, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
8
G220
Global Mixed-mode Technology Inc.
Pin Description
PIN
SYMBOL
DESCRIPTION
1
VREF
Reference Voltage. 2.85-volt reference in SE mode and 1.25V in LVD mode; must be connected to a
4.7F capacitor.
2-5,7-12,
18-25
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
NC/ HS GND No Connect/Heat Sink Ground. Should be grounded for heat sinking purpose
13
DISCNCT
Disconnect. When pulled high, the G220 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.
26
SE
Single ended mode indicator. It is HIGH when terminator is operating in SE mode.
27
LVD
Low Voltage Differential mode indicator. It is HIGH when terminator is operating in LVD mode.
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.
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