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Philips Semiconductors
USB 2-port hub
Pin description (MODE 1 – Individual Overcurrent)
PIN NO
PIN SYMBOL
1
TEST1
2
TEST2
3
TEST3
4
RESET_N
5
GND
6
XTAL1
7
XTAL2
8
CLKOUT
9
V
CC
10
OCURRENT2_N
11
SWITCH_N
12
SUSPEND
13
DN2_GL_N
14
OCURRENT3_N
15
RSVD
16
RSVD
17
INT_N
18
SDA
19
SCL
20
GND
21
DN3_DP
22
DN3_DM
23
DN2_DP
24
DN2_DM
25
AGND
26
AV
CC
27
UP_DP
28
UP_DM
NOTE:
1. Signals ending in _N indicate active low signals.
ST: Schmitt Trigger
OD6: Open Drain with 6 mA drive
AI/O: Analog I/O
1999 Jul 22
TYPE
DRIVE
Connect to V
Input
Connect to Ground for 12MHz crystal input.
Input
Connect to V
Input
Connect to Ground
Input
ST
Power-on reset
Power
Ground reference
Input
Crystal connection 1 (48 or 12MHz depending on TEST1 pin)
Output
Crystal connection 2 (48 or 12MHz depending on TEST1 pin)
Output
3mA
Programmable output clock for external devices
Power
Voltage supply 3.3V
Downstream port 2 over-current notice. This pin is also use to sense the USB
VBUS. A LOW on this pin of less than 2 seconds is interpreted as an overcurrent
Input
ST
notice; longer than 2 seconds is interpreted as loss of VBUS.
Output
OD6
Enables power to downstream ports
Output
OD6
Device is in suspended state
Output
OD6
Downstream port 2 GoodLink LED indicator
Input
ST
Downstream port 3 over-current notice
Input
Reserved. Connect to GND for normal operation.
Input
Reserved. Connect to GND for normal operation.
Output
OD6
Connect to microcontroller interrupt
2
I/O
OD6
I
C bi-directional data
2
I/O
OD6
I
C bit-clock
Power
Ground reference
AI/O
Downstream port 3 D
AI/O
Downstream port 3 D
AI/O
Downstream port 2 D
AI/O
Downstream port 2 D
Power
Analog Ground reference
Power
Analog voltage supply 3.3V
AI/O
Upstream D
AI/O
Upstream D
DESCRIPTION
for 48MHz crystal input.
CC
CC
0.3V
+
connection
–
connection
+
connection
-
connection
0.3V
+
connection
-
connection
8
Product specification
PDIUSBH12
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