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參數資料
| 型號： | ISP1123 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Universal Serial Bus compound hub |
| 中文描述： | 通用串行總線復合樞紐 |
| 文件頁數： | 5/49頁 |
| 文件大小： | 1155K |
| 代理商： | ISP1123 |
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Philips Semiconductors
ISP1123
USB compound hub
Preliminary specification
Rev. 01 — 5 October 1999
5 of 49
9397 750 06325
Philips Electronics N.V. 1999. 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]
PSW5/GL5/
GPSW
[3]
18
O
mode 5
: power switch control output for downstream port 5
(open-drain, 6 mA)
modes 3, 7
: GoodLink LED indicator output for downstream
port 5 (open-drain, 6 mA); to connect an LED use a 330
series resistor
modes 0 to 2
: gang mode power switch control output
(open-drain, 6 mA)
crystal oscillator input (6 MHz)
crystal oscillator output (6 MHz)
reset input (Schmitt trigger); a LOW level produces an
asynchronous reset; connect to V
CC
for power-on reset
(internal POR circuit)
mode selection input; also functions as I
2
C-bus clock output
(open-drain, 6 mA)
selects individual (HIGH) or global (LOW) power switching
and overcurrent detection; also functions as bidirectional
I
2
C-bus data line (open-drain, 6 mA)
downstream port 5 D
connection (analog)
[4]
downstream port 5 D
+
connection (analog)
[4]
downstream port 1 D
connection (analog)
[6]
downstream port 1 D
+
connection (analog)
[6]
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
XTAL1
XTAL2
RESET
[2]
19
20
21
I
O
I
OPTION/SCL
22
I/O
INDV/SDA
23
I/O
DM5
DP5
DM1
DP1
DM0
DP0
DM2
DP2
PSW1/GL1
[3]
24
25
26
27
28
29
30
31
32
AI/O
AI/O
AI/O
AI/O
AI/O
AI/O
AI/O
AI/O
O
Table 2:
Symbol
[1]
Pin description for SO32 and SDIP32
…continued
Pin
Type
Description
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1123D | Universal Serial Bus compound hub |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1123BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub |
| ISP1123D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus compound hub |
| 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 |
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