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Philips Semiconductors
ISP1122
USB stand-alone hub
Product specification Rev. 03 — 29 March 2000 6 of 48
9397 750 07002
© Philips Electronics N.V. 2000. All rights reserved.
5.2 ISP1122BD (LQFP32)
5.2.1 Pinning
5.2.2 Pin description
Fig 4. Pin configuration LQFP32.
handbook, full pagewidth
ISP1122BD
MBL018
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
DM3
GND
PSW2/GL2
V
reg(3.3)
PSW1/GL1
DP2
DM2
DP0
DP4
SP/BP
HUBGL
PSW3/GL3
PSW4/GL4
PSW5/GL5/GPSW
XTAL1
XTAL2
DP3
V
CC
OC1
DM4
DM0
DP1
DM1
DP5
DM5
INDV/SDA
OPTION/SCL
RESET
OC2
OC3
OC4
OC5/GOC
Table 3: Pin description for LQFP32
Symbol
[1]
Pin Type Description
V
reg(3.3)
[2]
29 - regulated supply voltage (3.3 V ± 10%) from internal
regulator; used to connect pull-up resistor on DP0 line
PSW2/GL2
[3]
30 O modes 4 to 6: power switch control output for downstream
port 2 (open-drain, 6 mA)
modes 0 to 3, 7: GoodLink LED indicator output for
downstream port 2 (open-drain, 6 mA); to connect an LED
use a 330 Ω series resistor
GND 31 - ground supply
DM3 32 AI/O downstream port 3 D− connection (analog)
[4]
DP3 1 AI/O downstream port 3 D+ connection (analog)
[4]
V
CC
2 - supply voltage; connect to USB supply V
BUS
(bus-powered or
hybrid-powered) or to local supply V
DD
(self-powered)
OC1 3 AI/I overcurrent sense input for downstream port 1 (analog
[5]
)
OC2 4 AI/I overcurrent sense input for downstream port 2 (analog
[5]
)
OC3 5 AI/I overcurrent sense input for downstream port 3 (analog
[5]
)
OC4 6 AI/I overcurrent sense input for downstream port 4 (analog
[5]
)