GL652USB View Datasheet(PDF) - Genesys Logic
Part Name
Description
Manufacturer
GL652USB Datasheet PDF : 17 Pages
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GL652USB 7 PORT USB HUB CONTROLLER
2 FUNCTION OVERVIEW
The GL652USB is an 8 port USB hub with 1 upstream port and 7 downstream ports. It
uses an 8-bit RISC-like uC to encode/decode the host commands. The GL652USB is
designed mainly for stand-alone hub and can also be integrated in PC mo therboard or any
other devices to support USB hub function. The GL652USB can switch between self-
power and bus-power automatically without re-plug in. The GL652USB can be
configured as individual mode or ganged mode for the power management of
downstream port devices. To prevent from abnormal current consumption of downstream
port devices, the GL652USB supplies power enable flags by reading the over-current
flags. The GL652USB supports smart traffic indication through the LED lighting. The
higher data traffic flows through one port, the higher frequency of that port’s LED blinks.
To minimize the power consumption, the GL652USB will turn LED off and stop the
clock when they are suspended.
3 PIN DEFINITIONS AND DESCRIPTIONS
l GL652USB
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
DP0
DM0
AGND
DP7
DM7
DP1
DM1
DP6
DM6
DP4
DM4
AVCC
DP2
DM2
VCP
DP5
DM5
DP3
DM3
SUSPND
SELF
LED1
LED2
LED3
RESET
LED4
OVCUR4#
LED5
I/O
Description
I/O Upstream port USB data+
I/O Upstream port USB data-
-
Analog ground
I/O Downstream port 7 USB data+
I/O Downstream port 7 USB data-
I/O Downstream port 1 USB data+
I/O Downstream port 1 USB data-
I/O Downstream port 6 USB data+
I/O Downstream port 6 USB data-
I/O Downstream port 4 USB data+
I/O Downstream port 4 USB data-
-
Analog VCC(5V)
I/O Downstream port 2 USB data+
I/O Downstream port 2 USB data-
-
3.3V output
I/O Downstream port 5 USB data+
I/O Downstream port 5 USB data-
I/O Downstream port 3 USB data+
I/O Downstream port 3 USB data-
O Suspend indication output
I
1: SELF-powered. 0: INDIVIDUAL-powered
O LED traffic indicator for downstream port 1
O LED traffic indicator for downstream port 2
O LED traffic indicator for downstream port 3
I
Reset input
O LED traffic indicator for downstream port 4
I
Over current flag for downstream port4
O LED traffic indicator for downstream port 5
3
08/18/00
Revision 1.2
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