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Philips Semiconductors
USB 2-port hub
Pin description (MODE 0 – Good Link )
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
OCURRENT_N
11
SWITCH_N
12
SUSPEND
13
DN2_GL_N
14
DN3_GL_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 Ground for 48MHz crystal input.
Input
Connect to V
Input
Connect to Ground
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
Over-current notice to the device. This pin is also used to sense the USB VBUS.
A LOW on this pin of less than 2 seconds is interpreted as an overcurrent notice;
Input
ST
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
Output
OD6
Downstream port 3 GoodLink
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 12MHz crystal input.
CC
0.3V
LED indicator
LED indicator
+
connection
–
connection
+
connection
-
connection
0.3V
+
connection
-
connection
7
Product specification
PDIUSBH12
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