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參數資料
| 型號： | ISP1122ABD |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | Universal Serial Bus stand-alone hub |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP32 |
| 封裝： | 7 X 7 X 1.40 MM, PLASTIC, LQFP-32 |
| 文件頁數： | 5/48頁 |
| 文件大小： | 1150K |
| 代理商： | ISP1122ABD |
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Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
5 of 48
9397 750 06986
Philips Electronics N.V. 2000. All rights reserved.
[1]
[2]
Symbol names with an overscore (e.g. NAME) indicate active LOW signals.
The voltage at pin V
reg(3.3)
is gated by the RESET pin. This allows fully self-powered operation by
connecting RESET to V
BUS
(+5 V USB supply). If V
BUS
is lost upstream port D+ will not be driven.
See
Table 4 “Mode selection”
.
To disable a downstream port connect both D
+
and D
to V
CC
via a 1 M
resistor; unused ports must
be disabled in reverse order starting from port 5.
Analog detection circuit can be switched off using an external EEPROM, see
Table 23
; in this case,
the pin functions as a logic input (TTL level).
Downstream ports 1 and 2 cannot be disabled.
[3]
[4]
[5]
[6]
DM0
DP0
DM2
DP2
PSW1/GL1
[3]
28
29
30
31
32
AI/O
AI/O
AI/O
AI/O
O
upstream port D
connection (analog)
upstream port D
+
connection (analog)
downstream port 2 D
connection (analog)
[6]
downstream port 2 D
+
connection (analog)
[6]
modes 4 to 6
: power switch control output for downstream
port 1 (open-drain, 6 mA)
modes 0 to 3, 7
: GoodLink LED indicator output for
downstream port 1 (open-drain, 6 mA); to connect an LED
use a 330
series resistor
Table 2:
Symbol
[1]
Pin description for SO32 and SDIP32
…continued
Pin
Type
Description
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1122AD | Universal Serial Bus stand-alone hub |
| ISP1122ANB | Universal Serial Bus stand-alone hub |
| ISP1122 | Universal Serial Bus stand-alone hub |
| ISP1122BD | Universal Serial Bus stand-alone hub |
| ISP1122D | Universal Serial Bus stand-alone hub |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1122AD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122ANB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122NB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
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