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參數資料
| 型號： | ISP1123D |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | Universal Serial Bus compound hub |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDSO32 |
| 封裝： | 7.50 MM, PLASTIC, SO-32 |
| 文件頁數： | 26/49頁 |
| 文件大小： | 1155K |
| 代理商： | ISP1123D |
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Philips Semiconductors
ISP1123
USB compound hub
Preliminary specification
Rev. 01 — 5 October 1999
26 of 49
9397 750 06325
Philips Electronics N.V. 1999. All rights reserved.
13.4 Reference circuits
Some typical examples of port power switching and overcurrent detection modes are
given in
Figure 11
to
Figure 14
.
The RC circuit (10 k
and 0.1
μ
F) around the PMOS switch provides for soft turn-on.
The series resistor connecting the SP/BP pin to V
CC
tunes up the overcurrent trip
voltage slightly (see
Figure 10
). In the schematic diagram the resistor separates the
net names for pins V
CC
and SP/BP. This allows an automatic router to use a wide
trace for V
CC
and a narrow trace to connect pin SP/BP.
I
ref(nom)
= 5
μ
A
I
OC(nom)
= 0.5
μ
A
Self-powered mode.
I
OC(nom)
= 0.5
μ
A
a.
b.
Bus-powered mode.
Fig 10. Tuning the overcurrent trip voltage.
handbook, halfpage
MBL079
VCC
Iref
Rtu
Rtd
low-ohmic
PMOS switch
VCC
SP/BP
ISP1123
OCn
IOC
handbook, halfpage
MBL080
VBUS
Rtd
low-ohmic
PMOS switch
VCC
SP/BP
ISP1123
OCn
IOC
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1123NB | Universal Serial Bus compound hub |
| ISP1130 | Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1130DL | Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1130N | Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1160 | Embedded Universal Serial Bus Host Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1123NB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub |
| ISP1130 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1130DL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1130N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub with integrated keyboard controller |
| ISP1160 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller |
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